update scriptaculous to version 1.8.1

9 files changed, 5036 insertions, 1993 deletions

diff --git a/usr/local/www/javascript/scriptaculous/builder.js b/usr/local/www/javascript/scriptaculous/builder.js
index 5b15ba9..8301999 100644
--- a/usr/local/www/javascript/scriptaculous/builder.js
+++ b/usr/local/www/javascript/scriptaculous/builder.js
@@ -1,6 +1,9 @@
-// Copyright (c) 2005 Thomas Fuchs (http://script.aculo.us, http://mir.aculo.us)
+// script.aculo.us builder.js v1.8.1, Thu Jan 03 22:07:12 -0500 2008
+
+// Copyright (c) 2005-2007 Thomas Fuchs (http://script.aculo.us, http://mir.aculo.us)
 //
-// See scriptaculous.js for full license.
+// script.aculo.us is freely distributable under the terms of an MIT-style license.
+// For details, see the script.aculo.us web site: http://script.aculo.us/
 
 var Builder = {
   NODEMAP: {
@@ -33,7 +36,7 @@ var Builder = {
     var element = parentElement.firstChild || null;
       
     // see if browser added wrapping tags
-    if(element && (element.tagName != elementName))
+    if(element && (element.tagName.toUpperCase() != elementName))
       element = element.getElementsByTagName(elementName)[0];
     
     // fallback to createElement approach
@@ -45,7 +48,8 @@ var Builder = {
     // attributes (or text)
     if(arguments[1])
       if(this._isStringOrNumber(arguments[1]) ||
-        (arguments[1] instanceof Array)) {
+        (arguments[1] instanceof Array) ||
+        arguments[1].tagName) {
           this._children(element, arguments[1]);
         } else {
           var attrs = this._attributes(arguments[1]);
@@ -61,9 +65,9 @@ var Builder = {
               for(attr in arguments[1]) 
                 element[attr == 'class' ? 'className' : attr] = arguments[1][attr];
             }
-            if(element.tagName != elementName)
+            if(element.tagName.toUpperCase() != elementName)
               element = parentElement.getElementsByTagName(elementName)[0];
-            }
+          }
         } 
 
     // text, or array of children
@@ -75,14 +79,24 @@ var Builder = {
   _text: function(text) {
      return document.createTextNode(text);
   },
+
+  ATTR_MAP: {
+    'className': 'class',
+    'htmlFor': 'for'
+  },
+
   _attributes: function(attributes) {
     var attrs = [];
     for(attribute in attributes)
-      attrs.push((attribute=='className' ? 'class' : attribute) +
-          '="' + attributes[attribute].toString().escapeHTML() + '"');
+      attrs.push((attribute in this.ATTR_MAP ? this.ATTR_MAP[attribute] : attribute) +
+          '="' + attributes[attribute].toString().escapeHTML().gsub(/"/,'"') + '"');
     return attrs.join(" ");
   },
   _children: function(element, children) {
+    if(children.tagName) {
+      element.appendChild(children);
+      return;
+    }
     if(typeof children=='object') { // array can hold nodes and text
       children.flatten().each( function(e) {
         if(typeof e=='object')
@@ -92,10 +106,31 @@ var Builder = {
             element.appendChild(Builder._text(e));
       });
     } else
-      if(Builder._isStringOrNumber(children)) 
-         element.appendChild(Builder._text(children));
+      if(Builder._isStringOrNumber(children))
+        element.appendChild(Builder._text(children));
   },
   _isStringOrNumber: function(param) {
     return(typeof param=='string' || typeof param=='number');
+  },
+  build: function(html) {
+    var element = this.node('div');
+    $(element).update(html.strip());
+    return element.down();
+  },
+  dump: function(scope) { 
+    if(typeof scope != 'object' && typeof scope != 'function') scope = window; //global scope 
+  
+    var tags = ("A ABBR ACRONYM ADDRESS APPLET AREA B BASE BASEFONT BDO BIG BLOCKQUOTE BODY " +
+      "BR BUTTON CAPTION CENTER CITE CODE COL COLGROUP DD DEL DFN DIR DIV DL DT EM FIELDSET " +
+      "FONT FORM FRAME FRAMESET H1 H2 H3 H4 H5 H6 HEAD HR HTML I IFRAME IMG INPUT INS ISINDEX "+
+      "KBD LABEL LEGEND LI LINK MAP MENU META NOFRAMES NOSCRIPT OBJECT OL OPTGROUP OPTION P "+
+      "PARAM PRE Q S SAMP SCRIPT SELECT SMALL SPAN STRIKE STRONG STYLE SUB SUP TABLE TBODY TD "+
+      "TEXTAREA TFOOT TH THEAD TITLE TR TT U UL VAR").split(/\s+/);
+  
+    tags.each( function(tag){ 
+      scope[tag] = function() { 
+        return Builder.node.apply(Builder, [tag].concat($A(arguments)));  
+      } 
+    });
   }
-}
\ No newline at end of file
+}
diff --git a/usr/local/www/javascript/scriptaculous/controls.js b/usr/local/www/javascript/scriptaculous/controls.js
index de0261e..5012cb8 100644
--- a/usr/local/www/javascript/scriptaculous/controls.js
+++ b/usr/local/www/javascript/scriptaculous/controls.js
@@ -1,12 +1,15 @@
-// Copyright (c) 2005 Thomas Fuchs (http://script.aculo.us, http://mir.aculo.us)
-//           (c) 2005 Ivan Krstic (http://blogs.law.harvard.edu/ivan)
-//           (c) 2005 Jon Tirsen (http://www.tirsen.com)
+// script.aculo.us controls.js v1.8.1, Thu Jan 03 22:07:12 -0500 2008
+
+// Copyright (c) 2005-2007 Thomas Fuchs (http://script.aculo.us, http://mir.aculo.us)
+//           (c) 2005-2007 Ivan Krstic (http://blogs.law.harvard.edu/ivan)
+//           (c) 2005-2007 Jon Tirsen (http://www.tirsen.com)
 // Contributors:
 //  Richard Livsey
 //  Rahul Bhargava
 //  Rob Wills
 // 
-// See scriptaculous.js for full license.
+// script.aculo.us is freely distributable under the terms of an MIT-style license.
+// For details, see the script.aculo.us web site: http://script.aculo.us/
 
 // Autocompleter.Base handles all the autocompletion functionality 
 // that's independent of the data source for autocompletion. This
@@ -33,40 +36,50 @@
 // useful when one of the tokens is \n (a newline), as it 
 // allows smart autocompletion after linebreaks.
 
-var Autocompleter = {}
-Autocompleter.Base = function() {};
-Autocompleter.Base.prototype = {
+if(typeof Effect == 'undefined')
+  throw("controls.js requires including script.aculo.us' effects.js library");
+
+var Autocompleter = { }
+Autocompleter.Base = Class.create({
   baseInitialize: function(element, update, options) {
-    this.element     = $(element); 
+    element          = $(element)
+    this.element     = element; 
     this.update      = $(update);  
     this.hasFocus    = false; 
     this.changed     = false; 
     this.active      = false; 
     this.index       = 0;     
     this.entryCount  = 0;
+    this.oldElementValue = this.element.value;
 
-    if (this.setOptions)
+    if(this.setOptions)
       this.setOptions(options);
     else
-      this.options = options || {};
+      this.options = options || { };
 
     this.options.paramName    = this.options.paramName || this.element.name;
     this.options.tokens       = this.options.tokens || [];
     this.options.frequency    = this.options.frequency || 0.4;
     this.options.minChars     = this.options.minChars || 1;
     this.options.onShow       = this.options.onShow || 
-    function(element, update){ 
-      if(!update.style.position || update.style.position=='absolute') {
-        update.style.position = 'absolute';
-        Position.clone(element, update, {setHeight: false, offsetTop: element.offsetHeight});
-      }
-      Effect.Appear(update,{duration:0.15});
-    };
+      function(element, update){ 
+        if(!update.style.position || update.style.position=='absolute') {
+          update.style.position = 'absolute';
+          Position.clone(element, update, {
+            setHeight: false, 
+            offsetTop: element.offsetHeight
+          });
+        }
+        Effect.Appear(update,{duration:0.15});
+      };
     this.options.onHide = this.options.onHide || 
-    function(element, update){ new Effect.Fade(update,{duration:0.15}) };
+      function(element, update){ new Effect.Fade(update,{duration:0.15}) };
 
-    if (typeof(this.options.tokens) == 'string') 
+    if(typeof(this.options.tokens) == 'string') 
       this.options.tokens = new Array(this.options.tokens);
+    // Force carriage returns as token delimiters anyway
+    if (!this.options.tokens.include('\n'))
+      this.options.tokens.push('\n');
 
     this.observer = null;
     
@@ -74,15 +87,14 @@ Autocompleter.Base.prototype = {
 
     Element.hide(this.update);
 
-    Event.observe(this.element, "blur", this.onBlur.bindAsEventListener(this));
-    Event.observe(this.element, "keypress", this.onKeyPress.bindAsEventListener(this));
+    Event.observe(this.element, 'blur', this.onBlur.bindAsEventListener(this));
+    Event.observe(this.element, 'keydown', this.onKeyPress.bindAsEventListener(this));
   },
 
   show: function() {
     if(Element.getStyle(this.update, 'display')=='none') this.options.onShow(this.element, this.update);
     if(!this.iefix && 
-      (navigator.appVersion.indexOf('MSIE')>0) &&
-      (navigator.userAgent.indexOf('Opera')<0) &&
+      (Prototype.Browser.IE) &&
       (Element.getStyle(this.update, 'position')=='absolute')) {
       new Insertion.After(this.update, 
        '<iframe id="' + this.update.id + '_iefix" '+
@@ -94,7 +106,7 @@ Autocompleter.Base.prototype = {
   },
   
   fixIEOverlapping: function() {
-    Position.clone(this.update, this.iefix);
+    Position.clone(this.update, this.iefix, {setTop:(!this.update.style.height)});
     this.iefix.style.zIndex = 1;
     this.update.style.zIndex = 2;
     Element.show(this.iefix);
@@ -132,17 +144,17 @@ Autocompleter.Base.prototype = {
        case Event.KEY_UP:
          this.markPrevious();
          this.render();
-         if(navigator.appVersion.indexOf('AppleWebKit')>0) Event.stop(event);
+         Event.stop(event);
          return;
        case Event.KEY_DOWN:
          this.markNext();
          this.render();
-         if(navigator.appVersion.indexOf('AppleWebKit')>0) Event.stop(event);
+         Event.stop(event);
          return;
       }
      else 
        if(event.keyCode==Event.KEY_TAB || event.keyCode==Event.KEY_RETURN || 
-         (navigator.appVersion.indexOf('AppleWebKit') > 0 && event.keyCode == 0)) return;
+         (Prototype.Browser.WebKit > 0 && event.keyCode == 0)) return;
 
     this.changed = true;
     this.hasFocus = true;
@@ -188,7 +200,6 @@ Autocompleter.Base.prototype = {
         this.index==i ? 
           Element.addClassName(this.getEntry(i),"selected") : 
           Element.removeClassName(this.getEntry(i),"selected");
-        
       if(this.hasFocus) { 
         this.show();
         this.active = true;
@@ -202,11 +213,13 @@ Autocompleter.Base.prototype = {
   markPrevious: function() {
     if(this.index > 0) this.index--
       else this.index = this.entryCount-1;
+    this.getEntry(this.index).scrollIntoView(true);
   },
   
   markNext: function() {
     if(this.index < this.entryCount-1) this.index++
       else this.index = 0;
+    this.getEntry(this.index).scrollIntoView(false);
   },
   
   getEntry: function(index) {
@@ -229,21 +242,22 @@ Autocompleter.Base.prototype = {
     }
     var value = '';
     if (this.options.select) {
-      var nodes = document.getElementsByClassName(this.options.select, selectedElement) || [];
+      var nodes = $(selectedElement).select('.' + this.options.select) || [];
       if(nodes.length>0) value = Element.collectTextNodes(nodes[0], this.options.select);
     } else
       value = Element.collectTextNodesIgnoreClass(selectedElement, 'informal');
     
-    var lastTokenPos = this.findLastToken();
-    if (lastTokenPos != -1) {
-      var newValue = this.element.value.substr(0, lastTokenPos + 1);
-      var whitespace = this.element.value.substr(lastTokenPos + 1).match(/^\s+/);
+    var bounds = this.getTokenBounds();
+    if (bounds[0] != -1) {
+      var newValue = this.element.value.substr(0, bounds[0]);
+      var whitespace = this.element.value.substr(bounds[0]).match(/^\s+/);
       if (whitespace)
         newValue += whitespace[0];
-      this.element.value = newValue + value;
+      this.element.value = newValue + value + this.element.value.substr(bounds[1]);
     } else {
       this.element.value = value;
     }
+    this.oldElementValue = this.element.value;
     this.element.focus();
     
     if (this.options.afterUpdateElement)
@@ -254,11 +268,11 @@ Autocompleter.Base.prototype = {
     if(!this.changed && this.hasFocus) {
       this.update.innerHTML = choices;
       Element.cleanWhitespace(this.update);
-      Element.cleanWhitespace(this.update.firstChild);
+      Element.cleanWhitespace(this.update.down());
 
-      if(this.update.firstChild && this.update.firstChild.childNodes) {
+      if(this.update.firstChild && this.update.down().childNodes) {
         this.entryCount = 
-          this.update.firstChild.childNodes.length;
+          this.update.down().childNodes.length;
         for (var i = 0; i < this.entryCount; i++) {
           var entry = this.getEntry(i);
           entry.autocompleteIndex = i;
@@ -269,9 +283,14 @@ Autocompleter.Base.prototype = {
       }
 
       this.stopIndicator();
-
       this.index = 0;
-      this.render();
+      
+      if(this.entryCount==1 && this.options.autoSelect) {
+        this.selectEntry();
+        this.hide();
+      } else {
+        this.render();
+      }
     }
   },
 
@@ -282,39 +301,48 @@ Autocompleter.Base.prototype = {
 
   onObserverEvent: function() {
     this.changed = false;   
+    this.tokenBounds = null;
     if(this.getToken().length>=this.options.minChars) {
-      this.startIndicator();
       this.getUpdatedChoices();
     } else {
       this.active = false;
       this.hide();
     }
+    this.oldElementValue = this.element.value;
   },
 
   getToken: function() {
-    var tokenPos = this.findLastToken();
-    if (tokenPos != -1)
-      var ret = this.element.value.substr(tokenPos + 1).replace(/^\s+/,'').replace(/\s+$/,'');
-    else
-      var ret = this.element.value;
-
-    return /\n/.test(ret) ? '' : ret;
-  },
-
-  findLastToken: function() {
-    var lastTokenPos = -1;
-
-    for (var i=0; i<this.options.tokens.length; i++) {
-      var thisTokenPos = this.element.value.lastIndexOf(this.options.tokens[i]);
-      if (thisTokenPos > lastTokenPos)
-        lastTokenPos = thisTokenPos;
+    var bounds = this.getTokenBounds();
+    return this.element.value.substring(bounds[0], bounds[1]).strip();
+  },
+
+  getTokenBounds: function() {
+    if (null != this.tokenBounds) return this.tokenBounds;
+    var value = this.element.value;
+    if (value.strip().empty()) return [-1, 0];
+    var diff = arguments.callee.getFirstDifferencePos(value, this.oldElementValue);
+    var offset = (diff == this.oldElementValue.length ? 1 : 0);
+    var prevTokenPos = -1, nextTokenPos = value.length;
+    var tp;
+    for (var index = 0, l = this.options.tokens.length; index < l; ++index) {
+      tp = value.lastIndexOf(this.options.tokens[index], diff + offset - 1);
+      if (tp > prevTokenPos) prevTokenPos = tp;
+      tp = value.indexOf(this.options.tokens[index], diff + offset);
+      if (-1 != tp && tp < nextTokenPos) nextTokenPos = tp;
     }
-    return lastTokenPos;
+    return (this.tokenBounds = [prevTokenPos + 1, nextTokenPos]);
   }
-}
+});
+
+Autocompleter.Base.prototype.getTokenBounds.getFirstDifferencePos = function(newS, oldS) {
+  var boundary = Math.min(newS.length, oldS.length);
+  for (var index = 0; index < boundary; ++index)
+    if (newS[index] != oldS[index])
+      return index;
+  return boundary;
+};
 
-Ajax.Autocompleter = Class.create();
-Object.extend(Object.extend(Ajax.Autocompleter.prototype, Autocompleter.Base.prototype), {
+Ajax.Autocompleter = Class.create(Autocompleter.Base, {
   initialize: function(element, update, url, options) {
     this.baseInitialize(element, update, options);
     this.options.asynchronous  = true;
@@ -324,7 +352,9 @@ Object.extend(Object.extend(Ajax.Autocompleter.prototype, Autocompleter.Base.pro
   },
 
   getUpdatedChoices: function() {
-    entry = encodeURIComponent(this.options.paramName) + '=' + 
+    this.startIndicator();
+    
+    var entry = encodeURIComponent(this.options.paramName) + '=' + 
       encodeURIComponent(this.getToken());
 
     this.options.parameters = this.options.callback ?
@@ -332,14 +362,13 @@ Object.extend(Object.extend(Ajax.Autocompleter.prototype, Autocompleter.Base.pro
 
     if(this.options.defaultParams) 
       this.options.parameters += '&' + this.options.defaultParams;
-
+    
     new Ajax.Request(this.url, this.options);
   },
 
   onComplete: function(request) {
     this.updateChoices(request.responseText);
   }
-
 });
 
 // The local array autocompleter. Used when you'd prefer to
@@ -377,8 +406,7 @@ Object.extend(Object.extend(Ajax.Autocompleter.prototype, Autocompleter.Base.pro
 // In that case, the other options above will not apply unless
 // you support them.
 
-Autocompleter.Local = Class.create();
-Autocompleter.Local.prototype = Object.extend(new Autocompleter.Base(), {
+Autocompleter.Local = Class.create(Autocompleter.Base, {
   initialize: function(element, update, array, options) {
     this.baseInitialize(element, update, options);
     this.options.array = array;
@@ -434,13 +462,12 @@ Autocompleter.Local.prototype = Object.extend(new Autocompleter.Base(), {
           ret = ret.concat(partial.slice(0, instance.options.choices - ret.length))
         return "<ul>" + ret.join('') + "</ul>";
       }
-    }, options || {});
+    }, options || { });
   }
 });
 
-// AJAX in-place editor
-//
-// see documentation on http://wiki.script.aculo.us/scriptaculous/show/Ajax.InPlaceEditor
+// AJAX in-place editor and collection editor
+// Full rewrite by Christophe Porteneuve <tdd@tddsworld.com> (April 2007).
 
 // Use this if you notice weird scrolling problems on some browsers,
 // the DOM might be a bit confused when this gets called so do this
@@ -451,349 +478,472 @@ Field.scrollFreeActivate = function(field) {
   }, 1);
 }
 
-Ajax.InPlaceEditor = Class.create();
-Ajax.InPlaceEditor.defaultHighlightColor = "#FFFF99";
-Ajax.InPlaceEditor.prototype = {
+Ajax.InPlaceEditor = Class.create({
   initialize: function(element, url, options) {
     this.url = url;
-    this.element = $(element);
-
-    this.options = Object.extend({
-      okButton: true,
-      okText: "ok",
-      cancelLink: true,
-      cancelText: "cancel",
-      savingText: "Saving...",
-      clickToEditText: "Click to edit",
-      okText: "ok",
-      rows: 1,
-      onComplete: function(transport, element) {
-        new Effect.Highlight(element, {startcolor: this.options.highlightcolor});
-      },
-      onFailure: function(transport) {
-        alert("Error communicating with the server: " + transport.responseText.stripTags());
-      },
-      callback: function(form) {
-        return Form.serialize(form);
-      },
-      handleLineBreaks: true,
-      loadingText: 'Loading...',
-      savingClassName: 'inplaceeditor-saving',
-      loadingClassName: 'inplaceeditor-loading',
-      formClassName: 'inplaceeditor-form',
-      highlightcolor: Ajax.InPlaceEditor.defaultHighlightColor,
-      highlightendcolor: "#FFFFFF",
-      externalControl: null,
-      submitOnBlur: false,
-      ajaxOptions: {},
-      evalScripts: false
-    }, options || {});
-
-    if(!this.options.formId && this.element.id) {
-      this.options.formId = this.element.id + "-inplaceeditor";
-      if ($(this.options.formId)) {
-        // there's already a form with that name, don't specify an id
-        this.options.formId = null;
-      }
+    this.element = element = $(element);
+    this.prepareOptions();
+    this._controls = { };
+    arguments.callee.dealWithDeprecatedOptions(options); // DEPRECATION LAYER!!!
+    Object.extend(this.options, options || { });
+    if (!this.options.formId && this.element.id) {
+      this.options.formId = this.element.id + '-inplaceeditor';
+      if ($(this.options.formId))
+        this.options.formId = '';
     }
-    
-    if (this.options.externalControl) {
+    if (this.options.externalControl)
       this.options.externalControl = $(this.options.externalControl);
-    }
-    
-    this.originalBackground = Element.getStyle(this.element, 'background-color');
-    if (!this.originalBackground) {
-      this.originalBackground = "transparent";
-    }
-    
+    if (!this.options.externalControl)
+      this.options.externalControlOnly = false;
+    this._originalBackground = this.element.getStyle('background-color') || 'transparent';
     this.element.title = this.options.clickToEditText;
-    
-    this.onclickListener = this.enterEditMode.bindAsEventListener(this);
-    this.mouseoverListener = this.enterHover.bindAsEventListener(this);
-    this.mouseoutListener = this.leaveHover.bindAsEventListener(this);
-    Event.observe(this.element, 'click', this.onclickListener);
-    Event.observe(this.element, 'mouseover', this.mouseoverListener);
-    Event.observe(this.element, 'mouseout', this.mouseoutListener);
-    if (this.options.externalControl) {
-      Event.observe(this.options.externalControl, 'click', this.onclickListener);
-      Event.observe(this.options.externalControl, 'mouseover', this.mouseoverListener);
-      Event.observe(this.options.externalControl, 'mouseout', this.mouseoutListener);
-    }
-  },
-  enterEditMode: function(evt) {
-    if (this.saving) return;
-    if (this.editing) return;
-    this.editing = true;
-    this.onEnterEditMode();
-    if (this.options.externalControl) {
-      Element.hide(this.options.externalControl);
-    }
-    Element.hide(this.element);
-    this.createForm();
-    this.element.parentNode.insertBefore(this.form, this.element);
-    Field.scrollFreeActivate(this.editField);
-    // stop the event to avoid a page refresh in Safari
-    if (evt) {
-      Event.stop(evt);
+    this._boundCancelHandler = this.handleFormCancellation.bind(this);
+    this._boundComplete = (this.options.onComplete || Prototype.emptyFunction).bind(this);
+    this._boundFailureHandler = this.handleAJAXFailure.bind(this);
+    this._boundSubmitHandler = this.handleFormSubmission.bind(this);
+    this._boundWrapperHandler = this.wrapUp.bind(this);
+    this.registerListeners();
+  },
+  checkForEscapeOrReturn: function(e) {
+    if (!this._editing || e.ctrlKey || e.altKey || e.shiftKey) return;
+    if (Event.KEY_ESC == e.keyCode)
+      this.handleFormCancellation(e);
+    else if (Event.KEY_RETURN == e.keyCode)
+      this.handleFormSubmission(e);
+  },
+  createControl: function(mode, handler, extraClasses) {
+    var control = this.options[mode + 'Control'];
+    var text = this.options[mode + 'Text'];
+    if ('button' == control) {
+      var btn = document.createElement('input');
+      btn.type = 'submit';
+      btn.value = text;
+      btn.className = 'editor_' + mode + '_button';
+      if ('cancel' == mode)
+        btn.onclick = this._boundCancelHandler;
+      this._form.appendChild(btn);
+      this._controls[mode] = btn;
+    } else if ('link' == control) {
+      var link = document.createElement('a');
+      link.href = '#';
+      link.appendChild(document.createTextNode(text));
+      link.onclick = 'cancel' == mode ? this._boundCancelHandler : this._boundSubmitHandler;
+      link.className = 'editor_' + mode + '_link';
+      if (extraClasses)
+        link.className += ' ' + extraClasses;
+      this._form.appendChild(link);
+      this._controls[mode] = link;
     }
-    return false;
-  },
-  createForm: function() {
-    this.form = document.createElement("form");
-    this.form.id = this.options.formId;
-    Element.addClassName(this.form, this.options.formClassName)
-    this.form.onsubmit = this.onSubmit.bind(this);
-
-    this.createEditField();
-
-    if (this.options.textarea) {
-      var br = document.createElement("br");
-      this.form.appendChild(br);
-    }
-
-    if (this.options.okButton) {
-      okButton = document.createElement("input");
-      okButton.type = "submit";
-      okButton.value = this.options.okText;
-      okButton.className = 'editor_ok_button';
-      this.form.appendChild(okButton);
-    }
-
-    if (this.options.cancelLink) {
-      cancelLink = document.createElement("a");
-      cancelLink.href = "#";
-      cancelLink.appendChild(document.createTextNode(this.options.cancelText));
-      cancelLink.onclick = this.onclickCancel.bind(this);
-      cancelLink.className = 'editor_cancel';      
-      this.form.appendChild(cancelLink);
-    }
-  },
-  hasHTMLLineBreaks: function(string) {
-    if (!this.options.handleLineBreaks) return false;
-    return string.match(/<br/i) || string.match(/<p>/i);
-  },
-  convertHTMLLineBreaks: function(string) {
-    return string.replace(/<br>/gi, "\n").replace(/<br\/>/gi, "\n").replace(/<\/p>/gi, "\n").replace(/<p>/gi, "");
   },
   createEditField: function() {
-    var text;
-    if(this.options.loadTextURL) {
-      text = this.options.loadingText;
-    } else {
-      text = this.getText();
-    }
-
-    var obj = this;
-    
-    if (this.options.rows == 1 && !this.hasHTMLLineBreaks(text)) {
-      this.options.textarea = false;
-      var textField = document.createElement("input");
-      textField.obj = this;
-      textField.type = "text";
-      textField.name = "value";
-      textField.value = text;
-      textField.style.backgroundColor = this.options.highlightcolor;
-      textField.className = 'editor_field';
+    var text = (this.options.loadTextURL ? this.options.loadingText : this.getText());
+    var fld;
+    if (1 >= this.options.rows && !/\r|\n/.test(this.getText())) {
+      fld = document.createElement('input');
+      fld.type = 'text';
       var size = this.options.size || this.options.cols || 0;
-      if (size != 0) textField.size = size;
-      if (this.options.submitOnBlur)
-        textField.onblur = this.onSubmit.bind(this);
-      this.editField = textField;
+      if (0 < size) fld.size = size;
     } else {
-      this.options.textarea = true;
-      var textArea = document.createElement("textarea");
-      textArea.obj = this;
-      textArea.name = "value";
-      textArea.value = this.convertHTMLLineBreaks(text);
-      textArea.rows = this.options.rows;
-      textArea.cols = this.options.cols || 40;
-      textArea.className = 'editor_field';      
-      if (this.options.submitOnBlur)
-        textArea.onblur = this.onSubmit.bind(this);
-      this.editField = textArea;
+      fld = document.createElement('textarea');
+      fld.rows = (1 >= this.options.rows ? this.options.autoRows : this.options.rows);
+      fld.cols = this.options.cols || 40;
     }
-    
-    if(this.options.loadTextURL) {
+    fld.name = this.options.paramName;
+    fld.value = text; // No HTML breaks conversion anymore
+    fld.className = 'editor_field';
+    if (this.options.submitOnBlur)
+      fld.onblur = this._boundSubmitHandler;
+    this._controls.editor = fld;
+    if (this.options.loadTextURL)
       this.loadExternalText();
-    }
-    this.form.appendChild(this.editField);
+    this._form.appendChild(this._controls.editor);
+  },
+  createForm: function() {
+    var ipe = this;
+    function addText(mode, condition) {
+      var text = ipe.options['text' + mode + 'Controls'];
+      if (!text || condition === false) return;
+      ipe._form.appendChild(document.createTextNode(text));
+    };
+    this._form = $(document.createElement('form'));
+    this._form.id = this.options.formId;
+    this._form.addClassName(this.options.formClassName);
+    this._form.onsubmit = this._boundSubmitHandler;
+    this.createEditField();
+    if ('textarea' == this._controls.editor.tagName.toLowerCase())
+      this._form.appendChild(document.createElement('br'));
+    if (this.options.onFormCustomization)
+      this.options.onFormCustomization(this, this._form);
+    addText('Before', this.options.okControl || this.options.cancelControl);
+    this.createControl('ok', this._boundSubmitHandler);
+    addText('Between', this.options.okControl && this.options.cancelControl);
+    this.createControl('cancel', this._boundCancelHandler, 'editor_cancel');
+    addText('After', this.options.okControl || this.options.cancelControl);
+  },
+  destroy: function() {
+    if (this._oldInnerHTML)
+      this.element.innerHTML = this._oldInnerHTML;
+    this.leaveEditMode();
+    this.unregisterListeners();
+  },
+  enterEditMode: function(e) {
+    if (this._saving || this._editing) return;
+    this._editing = true;
+    this.triggerCallback('onEnterEditMode');
+    if (this.options.externalControl)
+      this.options.externalControl.hide();
+    this.element.hide();
+    this.createForm();
+    this.element.parentNode.insertBefore(this._form, this.element);
+    if (!this.options.loadTextURL)
+      this.postProcessEditField();
+    if (e) Event.stop(e);
+  },
+  enterHover: function(e) {
+    if (this.options.hoverClassName)
+      this.element.addClassName(this.options.hoverClassName);
+    if (this._saving) return;
+    this.triggerCallback('onEnterHover');
   },
   getText: function() {
     return this.element.innerHTML;
   },
-  loadExternalText: function() {
-    Element.addClassName(this.form, this.options.loadingClassName);
-    this.editField.disabled = true;
-    new Ajax.Request(
-      this.options.loadTextURL,
-      Object.extend({
-        asynchronous: true,
-        onComplete: this.onLoadedExternalText.bind(this)
-      }, this.options.ajaxOptions)
-    );
-  },
-  onLoadedExternalText: function(transport) {
-    Element.removeClassName(this.form, this.options.loadingClassName);
-    this.editField.disabled = false;
-    this.editField.value = transport.responseText.stripTags();
-  },
-  onclickCancel: function() {
-    this.onComplete();
-    this.leaveEditMode();
-    return false;
-  },
-  onFailure: function(transport) {
-    this.options.onFailure(transport);
-    if (this.oldInnerHTML) {
-      this.element.innerHTML = this.oldInnerHTML;
-      this.oldInnerHTML = null;
+  handleAJAXFailure: function(transport) {
+    this.triggerCallback('onFailure', transport);
+    if (this._oldInnerHTML) {
+      this.element.innerHTML = this._oldInnerHTML;
+      this._oldInnerHTML = null;
     }
-    return false;
   },
-  onSubmit: function() {
-    // onLoading resets these so we need to save them away for the Ajax call
-    var form = this.form;
-    var value = this.editField.value;
-    
-    // do this first, sometimes the ajax call returns before we get a chance to switch on Saving...
-    // which means this will actually switch on Saving... *after* we've left edit mode causing Saving...
-    // to be displayed indefinitely
-    this.onLoading();
-    
-    if (this.options.evalScripts) {
-      new Ajax.Request(
-        this.url, Object.extend({
-          parameters: this.options.callback(form, value),
-          onComplete: this.onComplete.bind(this),
-          onFailure: this.onFailure.bind(this),
-          asynchronous:true, 
-          evalScripts:true
-        }, this.options.ajaxOptions));
-    } else  {
-      new Ajax.Updater(
-        { success: this.element,
-          // don't update on failure (this could be an option)
-          failure: null }, 
-        this.url, Object.extend({
-          parameters: this.options.callback(form, value),
-          onComplete: this.onComplete.bind(this),
-          onFailure: this.onFailure.bind(this)
-        }, this.options.ajaxOptions));
-    }
-    // stop the event to avoid a page refresh in Safari
-    if (arguments.length > 1) {
-      Event.stop(arguments[0]);
+  handleFormCancellation: function(e) {
+    this.wrapUp();
+    if (e) Event.stop(e);
+  },
+  handleFormSubmission: function(e) {
+    var form = this._form;
+    var value = $F(this._controls.editor);
+    this.prepareSubmission();
+    var params = this.options.callback(form, value) || '';
+    if (Object.isString(params))
+      params = params.toQueryParams();
+    params.editorId = this.element.id;
+    if (this.options.htmlResponse) {
+      var options = Object.extend({ evalScripts: true }, this.options.ajaxOptions);
+      Object.extend(options, {
+        parameters: params,
+        onComplete: this._boundWrapperHandler,
+        onFailure: this._boundFailureHandler
+      });
+      new Ajax.Updater({ success: this.element }, this.url, options);
+    } else {
+      var options = Object.extend({ method: 'get' }, this.options.ajaxOptions);
+      Object.extend(options, {
+        parameters: params,
+        onComplete: this._boundWrapperHandler,
+        onFailure: this._boundFailureHandler
+      });
+      new Ajax.Request(this.url, options);
     }
-    return false;
+    if (e) Event.stop(e);
   },
-  onLoading: function() {
-    this.saving = true;
+  leaveEditMode: function() {
+    this.element.removeClassName(this.options.savingClassName);
+    this.removeForm();
+    this.leaveHover();
+    this.element.style.backgroundColor = this._originalBackground;
+    this.element.show();
+    if (this.options.externalControl)
+      this.options.externalControl.show();
+    this._saving = false;
+    this._editing = false;
+    this._oldInnerHTML = null;
+    this.triggerCallback('onLeaveEditMode');
+  },
+  leaveHover: function(e) {
+    if (this.options.hoverClassName)
+      this.element.removeClassName(this.options.hoverClassName);
+    if (this._saving) return;
+    this.triggerCallback('onLeaveHover');
+  },
+  loadExternalText: function() {
+    this._form.addClassName(this.options.loadingClassName);
+    this._controls.editor.disabled = true;
+    var options = Object.extend({ method: 'get' }, this.options.ajaxOptions);
+    Object.extend(options, {
+      parameters: 'editorId=' + encodeURIComponent(this.element.id),
+      onComplete: Prototype.emptyFunction,
+      onSuccess: function(transport) {
+        this._form.removeClassName(this.options.loadingClassName);
+        var text = transport.responseText;
+        if (this.options.stripLoadedTextTags)
+          text = text.stripTags();
+        this._controls.editor.value = text;
+        this._controls.editor.disabled = false;
+        this.postProcessEditField();
+      }.bind(this),
+      onFailure: this._boundFailureHandler
+    });
+    new Ajax.Request(this.options.loadTextURL, options);
+  },
+  postProcessEditField: function() {
+    var fpc = this.options.fieldPostCreation;
+    if (fpc)
+      $(this._controls.editor)['focus' == fpc ? 'focus' : 'activate']();
+  },
+  prepareOptions: function() {
+    this.options = Object.clone(Ajax.InPlaceEditor.DefaultOptions);
+    Object.extend(this.options, Ajax.InPlaceEditor.DefaultCallbacks);
+    [this._extraDefaultOptions].flatten().compact().each(function(defs) {
+      Object.extend(this.options, defs);
+    }.bind(this));
+  },
+  prepareSubmission: function() {
+    this._saving = true;
     this.removeForm();
     this.leaveHover();
     this.showSaving();
   },
+  registerListeners: function() {
+    this._listeners = { };
+    var listener;
+    $H(Ajax.InPlaceEditor.Listeners).each(function(pair) {
+      listener = this[pair.value].bind(this);
+      this._listeners[pair.key] = listener;
+      if (!this.options.externalControlOnly)
+        this.element.observe(pair.key, listener);
+      if (this.options.externalControl)
+        this.options.externalControl.observe(pair.key, listener);
+    }.bind(this));
+  },
+  removeForm: function() {
+    if (!this._form) return;
+    this._form.remove();
+    this._form = null;
+    this._controls = { };
+  },
   showSaving: function() {
-    this.oldInnerHTML = this.element.innerHTML;
+    this._oldInnerHTML = this.element.innerHTML;
     this.element.innerHTML = this.options.savingText;
-    Element.addClassName(this.element, this.options.savingClassName);
-    this.element.style.backgroundColor = this.originalBackground;
-    Element.show(this.element);
+    this.element.addClassName(this.options.savingClassName);
+    this.element.style.backgroundColor = this._originalBackground;
+    this.element.show();
   },
-  removeForm: function() {
-    if(this.form) {
-      if (this.form.parentNode) Element.remove(this.form);
-      this.form = null;
+  triggerCallback: function(cbName, arg) {
+    if ('function' == typeof this.options[cbName]) {
+      this.options[cbName](this, arg);
     }
   },
-  enterHover: function() {
-    if (this.saving) return;
-    this.element.style.backgroundColor = this.options.highlightcolor;
-    if (this.effect) {
-      this.effect.cancel();
-    }
-    Element.addClassName(this.element, this.options.hoverClassName)
+  unregisterListeners: function() {
+    $H(this._listeners).each(function(pair) {
+      if (!this.options.externalControlOnly)
+        this.element.stopObserving(pair.key, pair.value);
+      if (this.options.externalControl)
+        this.options.externalControl.stopObserving(pair.key, pair.value);
+    }.bind(this));
   },
-  leaveHover: function() {
-    if (this.options.backgroundColor) {
-      this.element.style.backgroundColor = this.oldBackground;
-    }
-    Element.removeClassName(this.element, this.options.hoverClassName)
-    if (this.saving) return;
-    this.effect = new Effect.Highlight(this.element, {
-      startcolor: this.options.highlightcolor,
-      endcolor: this.options.highlightendcolor,
-      restorecolor: this.originalBackground
+  wrapUp: function(transport) {
+    this.leaveEditMode();
+    // Can't use triggerCallback due to backward compatibility: requires
+    // binding + direct element
+    this._boundComplete(transport, this.element);
+  }
+});
+
+Object.extend(Ajax.InPlaceEditor.prototype, {
+  dispose: Ajax.InPlaceEditor.prototype.destroy
+});
+
+Ajax.InPlaceCollectionEditor = Class.create(Ajax.InPlaceEditor, {
+  initialize: function($super, element, url, options) {
+    this._extraDefaultOptions = Ajax.InPlaceCollectionEditor.DefaultOptions;
+    $super(element, url, options);
+  },
+
+  createEditField: function() {
+    var list = document.createElement('select');
+    list.name = this.options.paramName;
+    list.size = 1;
+    this._controls.editor = list;
+    this._collection = this.options.collection || [];
+    if (this.options.loadCollectionURL)
+      this.loadCollection();
+    else
+      this.checkForExternalText();
+    this._form.appendChild(this._controls.editor);
+  },
+
+  loadCollection: function() {
+    this._form.addClassName(this.options.loadingClassName);
+    this.showLoadingText(this.options.loadingCollectionText);
+    var options = Object.extend({ method: 'get' }, this.options.ajaxOptions);
+    Object.extend(options, {
+      parameters: 'editorId=' + encodeURIComponent(this.element.id),
+      onComplete: Prototype.emptyFunction,
+      onSuccess: function(transport) {
+        var js = transport.responseText.strip();
+        if (!/^\[.*\]$/.test(js)) // TODO: improve sanity check
+          throw 'Server returned an invalid collection representation.';
+        this._collection = eval(js);
+        this.checkForExternalText();
+      }.bind(this),
+      onFailure: this.onFailure
     });
+    new Ajax.Request(this.options.loadCollectionURL, options);
   },
-  leaveEditMode: function() {
-    Element.removeClassName(this.element, this.options.savingClassName);
-    this.removeForm();
-    this.leaveHover();
-    this.element.style.backgroundColor = this.originalBackground;
-    Element.show(this.element);
-    if (this.options.externalControl) {
-      Element.show(this.options.externalControl);
+
+  showLoadingText: function(text) {
+    this._controls.editor.disabled = true;
+    var tempOption = this._controls.editor.firstChild;
+    if (!tempOption) {
+      tempOption = document.createElement('option');
+      tempOption.value = '';
+      this._controls.editor.appendChild(tempOption);
+      tempOption.selected = true;
     }
-    this.editing = false;
-    this.saving = false;
-    this.oldInnerHTML = null;
-    this.onLeaveEditMode();
+    tempOption.update((text || '').stripScripts().stripTags());
   },
-  onComplete: function(transport) {
-    this.leaveEditMode();
-    this.options.onComplete.bind(this)(transport, this.element);
+
+  checkForExternalText: function() {
+    this._text = this.getText();
+    if (this.options.loadTextURL)
+      this.loadExternalText();
+    else
+      this.buildOptionList();
   },
-  onEnterEditMode: function() {},
-  onLeaveEditMode: function() {},
-  dispose: function() {
-    if (this.oldInnerHTML) {
-      this.element.innerHTML = this.oldInnerHTML;
-    }
-    this.leaveEditMode();
-    Event.stopObserving(this.element, 'click', this.onclickListener);
-    Event.stopObserving(this.element, 'mouseover', this.mouseoverListener);
-    Event.stopObserving(this.element, 'mouseout', this.mouseoutListener);
-    if (this.options.externalControl) {
-      Event.stopObserving(this.options.externalControl, 'click', this.onclickListener);
-      Event.stopObserving(this.options.externalControl, 'mouseover', this.mouseoverListener);
-      Event.stopObserving(this.options.externalControl, 'mouseout', this.mouseoutListener);
-    }
+
+  loadExternalText: function() {
+    this.showLoadingText(this.options.loadingText);
+    var options = Object.extend({ method: 'get' }, this.options.ajaxOptions);
+    Object.extend(options, {
+      parameters: 'editorId=' + encodeURIComponent(this.element.id),
+      onComplete: Prototype.emptyFunction,
+      onSuccess: function(transport) {
+        this._text = transport.responseText.strip();
+        this.buildOptionList();
+      }.bind(this),
+      onFailure: this.onFailure
+    });
+    new Ajax.Request(this.options.loadTextURL, options);
+  },
+
+  buildOptionList: function() {
+    this._form.removeClassName(this.options.loadingClassName);
+    this._collection = this._collection.map(function(entry) {
+      return 2 === entry.length ? entry : [entry, entry].flatten();
+    });
+    var marker = ('value' in this.options) ? this.options.value : this._text;
+    var textFound = this._collection.any(function(entry) {
+      return entry[0] == marker;
+    }.bind(this));
+    this._controls.editor.update('');
+    var option;
+    this._collection.each(function(entry, index) {
+      option = document.createElement('option');
+      option.value = entry[0];
+      option.selected = textFound ? entry[0] == marker : 0 == index;
+      option.appendChild(document.createTextNode(entry[1]));
+      this._controls.editor.appendChild(option);
+    }.bind(this));
+    this._controls.editor.disabled = false;
+    Field.scrollFreeActivate(this._controls.editor);
   }
-};
+});
 
-Ajax.InPlaceCollectionEditor = Class.create();
-Object.extend(Ajax.InPlaceCollectionEditor.prototype, Ajax.InPlaceEditor.prototype);
-Object.extend(Ajax.InPlaceCollectionEditor.prototype, {
-  createEditField: function() {
-    if (!this.cached_selectTag) {
-      var selectTag = document.createElement("select");
-      var collection = this.options.collection || [];
-      var optionTag;
-      collection.each(function(e,i) {
-        optionTag = document.createElement("option");
-        optionTag.value = (e instanceof Array) ? e[0] : e;
-        if(this.options.value==optionTag.value) optionTag.selected = true;
-        optionTag.appendChild(document.createTextNode((e instanceof Array) ? e[1] : e));
-        selectTag.appendChild(optionTag);
-      }.bind(this));
-      this.cached_selectTag = selectTag;
-    }
+//**** DEPRECATION LAYER FOR InPlace[Collection]Editor! ****
+//**** This only  exists for a while,  in order to  let ****
+//**** users adapt to  the new API.  Read up on the new ****
+//**** API and convert your code to it ASAP!            ****
+
+Ajax.InPlaceEditor.prototype.initialize.dealWithDeprecatedOptions = function(options) {
+  if (!options) return;
+  function fallback(name, expr) {
+    if (name in options || expr === undefined) return;
+    options[name] = expr;
+  };
+  fallback('cancelControl', (options.cancelLink ? 'link' : (options.cancelButton ? 'button' :
+    options.cancelLink == options.cancelButton == false ? false : undefined)));
+  fallback('okControl', (options.okLink ? 'link' : (options.okButton ? 'button' :
+    options.okLink == options.okButton == false ? false : undefined)));
+  fallback('highlightColor', options.highlightcolor);
+  fallback('highlightEndColor', options.highlightendcolor);
+};
 
-    this.editField = this.cached_selectTag;
-    if(this.options.loadTextURL) this.loadExternalText();
-    this.form.appendChild(this.editField);
-    this.options.callback = function(form, value) {
-      return "value=" + encodeURIComponent(value);
+Object.extend(Ajax.InPlaceEditor, {
+  DefaultOptions: {
+    ajaxOptions: { },
+    autoRows: 3,                                // Use when multi-line w/ rows == 1
+    cancelControl: 'link',                      // 'link'|'button'|false
+    cancelText: 'cancel',
+    clickToEditText: 'Click to edit',
+    externalControl: null,                      // id|elt
+    externalControlOnly: false,
+    fieldPostCreation: 'activate',              // 'activate'|'focus'|false
+    formClassName: 'inplaceeditor-form',
+    formId: null,                               // id|elt
+    highlightColor: '#ffff99',
+    highlightEndColor: '#ffffff',
+    hoverClassName: '',
+    htmlResponse: true,
+    loadingClassName: 'inplaceeditor-loading',
+    loadingText: 'Loading...',
+    okControl: 'button',                        // 'link'|'button'|false
+    okText: 'ok',
+    paramName: 'value',
+    rows: 1,                                    // If 1 and multi-line, uses autoRows
+    savingClassName: 'inplaceeditor-saving',
+    savingText: 'Saving...',
+    size: 0,
+    stripLoadedTextTags: false,
+    submitOnBlur: false,
+    textAfterControls: '',
+    textBeforeControls: '',
+    textBetweenControls: ''
+  },
+  DefaultCallbacks: {
+    callback: function(form) {
+      return Form.serialize(form);
+    },
+    onComplete: function(transport, element) {
+      // For backward compatibility, this one is bound to the IPE, and passes
+      // the element directly.  It was too often customized, so we don't break it.
+      new Effect.Highlight(element, {
+        startcolor: this.options.highlightColor, keepBackgroundImage: true });
+    },
+    onEnterEditMode: null,
+    onEnterHover: function(ipe) {
+      ipe.element.style.backgroundColor = ipe.options.highlightColor;
+      if (ipe._effect)
+        ipe._effect.cancel();
+    },
+    onFailure: function(transport, ipe) {
+      alert('Error communication with the server: ' + transport.responseText.stripTags());
+    },
+    onFormCustomization: null, // Takes the IPE and its generated form, after editor, before controls.
+    onLeaveEditMode: null,
+    onLeaveHover: function(ipe) {
+      ipe._effect = new Effect.Highlight(ipe.element, {
+        startcolor: ipe.options.highlightColor, endcolor: ipe.options.highlightEndColor,
+        restorecolor: ipe._originalBackground, keepBackgroundImage: true
+      });
     }
+  },
+  Listeners: {
+    click: 'enterEditMode',
+    keydown: 'checkForEscapeOrReturn',
+    mouseover: 'enterHover',
+    mouseout: 'leaveHover'
   }
 });
 
+Ajax.InPlaceCollectionEditor.DefaultOptions = {
+  loadingCollectionText: 'Loading options...'
+};
+
 // Delayed observer, like Form.Element.Observer, 
 // but waits for delay after last key input
 // Ideal for live-search fields
 
-Form.Element.DelayedObserver = Class.create();
-Form.Element.DelayedObserver.prototype = {
+Form.Element.DelayedObserver = Class.create({
   initialize: function(element, delay, callback) {
     this.delay     = delay || 0.5;
     this.element   = $(element);
@@ -812,4 +962,4 @@ Form.Element.DelayedObserver.prototype = {
     this.timer = null;
     this.callback(this.element, $F(this.element));
   }
-};
+});
diff --git a/usr/local/www/javascript/scriptaculous/dragdrop.js b/usr/local/www/javascript/scriptaculous/dragdrop.js
index f1dc7ea..bf429c2 100644
--- a/usr/local/www/javascript/scriptaculous/dragdrop.js
+++ b/usr/local/www/javascript/scriptaculous/dragdrop.js
@@ -1,8 +1,13 @@
-// Copyright (c) 2005 Thomas Fuchs (http://script.aculo.us, http://mir.aculo.us)
+// script.aculo.us dragdrop.js v1.8.1, Thu Jan 03 22:07:12 -0500 2008
+
+// Copyright (c) 2005-2007 Thomas Fuchs (http://script.aculo.us, http://mir.aculo.us)
+//           (c) 2005-2007 Sammi Williams (http://www.oriontransfer.co.nz, sammi@oriontransfer.co.nz)
 // 
-// See scriptaculous.js for full license.
+// script.aculo.us is freely distributable under the terms of an MIT-style license.
+// For details, see the script.aculo.us web site: http://script.aculo.us/
 
-/*--------------------------------------------------------------------------*/
+if(Object.isUndefined(Effect))
+  throw("dragdrop.js requires including script.aculo.us' effects.js library");
 
 var Droppables = {
   drops: [],
@@ -15,15 +20,15 @@ var Droppables = {
     element = $(element);
     var options = Object.extend({
       greedy:     true,
-      hoverclass: null  
-    }, arguments[1] || {});
+      hoverclass: null,
+      tree:       false
+    }, arguments[1] || { });
 
     // cache containers
     if(options.containment) {
       options._containers = [];
       var containment = options.containment;
-      if((typeof containment == 'object') && 
-        (containment.constructor == Array)) {
+      if(Object.isArray(containment)) {
         containment.each( function(c) { options._containers.push($(c)) });
       } else {
         options._containers.push($(containment));
@@ -37,12 +42,27 @@ var Droppables = {
 
     this.drops.push(options);
   },
+  
+  findDeepestChild: function(drops) {
+    deepest = drops[0];
+      
+    for (i = 1; i < drops.length; ++i)
+      if (Element.isParent(drops[i].element, deepest.element))
+        deepest = drops[i];
+    
+    return deepest;
+  },
 
   isContained: function(element, drop) {
-    var parentNode = element.parentNode;
-    return drop._containers.detect(function(c) { return parentNode == c });
+    var containmentNode;
+    if(drop.tree) {
+      containmentNode = element.treeNode; 
+    } else {
+      containmentNode = element.parentNode;
+    }
+    return drop._containers.detect(function(c) { return containmentNode == c });
   },
-
+  
   isAffected: function(point, element, drop) {
     return (
       (drop.element!=element) &&
@@ -68,18 +88,24 @@ var Droppables = {
 
   show: function(point, element) {
     if(!this.drops.length) return;
+    var drop, affected = [];
     
-    if(this.last_active) this.deactivate(this.last_active);
     this.drops.each( function(drop) {
-      if(Droppables.isAffected(point, element, drop)) {
-        if(drop.onHover)
-           drop.onHover(element, drop.element, Position.overlap(drop.overlap, drop.element));
-        if(drop.greedy) { 
-          Droppables.activate(drop);
-          throw $break;
-        }
-      }
+      if(Droppables.isAffected(point, element, drop))
+        affected.push(drop);
     });
+        
+    if(affected.length>0)
+      drop = Droppables.findDeepestChild(affected);
+
+    if(this.last_active && this.last_active != drop) this.deactivate(this.last_active);
+    if (drop) {
+      Position.within(drop.element, point[0], point[1]);
+      if(drop.onHover)
+        drop.onHover(element, drop.element, Position.overlap(drop.overlap, drop.element));
+      
+      if (drop != this.last_active) Droppables.activate(drop);
+    }
   },
 
   fire: function(event, element) {
@@ -87,8 +113,10 @@ var Droppables = {
     Position.prepare();
 
     if (this.isAffected([Event.pointerX(event), Event.pointerY(event)], element, this.last_active))
-      if (this.last_active.onDrop) 
-        this.last_active.onDrop(element, this.last_active.element, event);
+      if (this.last_active.onDrop) {
+        this.last_active.onDrop(element, this.last_active.element, event); 
+        return true; 
+      }
   },
 
   reset: function() {
@@ -124,8 +152,16 @@ var Draggables = {
   },
   
   activate: function(draggable) {
-    window.focus(); // allows keypress events if window isn't currently focused, fails for Safari
-    this.activeDraggable = draggable;
+    if(draggable.options.delay) { 
+      this._timeout = setTimeout(function() { 
+        Draggables._timeout = null; 
+        window.focus(); 
+        Draggables.activeDraggable = draggable; 
+      }.bind(this), draggable.options.delay); 
+    } else {
+      window.focus(); // allows keypress events if window isn't currently focused, fails for Safari
+      this.activeDraggable = draggable;
+    }
   },
   
   deactivate: function() {
@@ -139,10 +175,15 @@ var Draggables = {
     // the same coordinates, prevent needless redrawing (moz bug?)
     if(this._lastPointer && (this._lastPointer.inspect() == pointer.inspect())) return;
     this._lastPointer = pointer;
+    
     this.activeDraggable.updateDrag(event, pointer);
   },
   
   endDrag: function(event) {
+    if(this._timeout) { 
+      clearTimeout(this._timeout); 
+      this._timeout = null; 
+    }
     if(!this.activeDraggable) return;
     this._lastPointer = null;
     this.activeDraggable.endDrag(event);
@@ -169,6 +210,7 @@ var Draggables = {
       this.observers.each( function(o) {
         if(o[eventName]) o[eventName](eventName, draggable, event);
       });
+    if(draggable.options[eventName]) draggable.options[eventName](draggable, event);
   },
   
   _cacheObserverCallbacks: function() {
@@ -182,42 +224,61 @@ var Draggables = {
 
 /*--------------------------------------------------------------------------*/
 
-var Draggable = Class.create();
-Draggable.prototype = {
+var Draggable = Class.create({
   initialize: function(element) {
-    var options = Object.extend({
+    var defaults = {
       handle: false,
-      starteffect: function(element) { 
-        new Effect.Opacity(element, {duration:0.2, from:1.0, to:0.7}); 
-      },
       reverteffect: function(element, top_offset, left_offset) {
         var dur = Math.sqrt(Math.abs(top_offset^2)+Math.abs(left_offset^2))*0.02;
-        element._revert = new Effect.Move(element, { x: -left_offset, y: -top_offset, duration: dur});
+        new Effect.Move(element, { x: -left_offset, y: -top_offset, duration: dur,
+          queue: {scope:'_draggable', position:'end'}
+        });
       },
-      endeffect: function(element) { 
-        new Effect.Opacity(element, {duration:0.2, from:0.7, to:1.0}); 
+      endeffect: function(element) {
+        var toOpacity = Object.isNumber(element._opacity) ? element._opacity : 1.0;
+        new Effect.Opacity(element, {duration:0.2, from:0.7, to:toOpacity, 
+          queue: {scope:'_draggable', position:'end'},
+          afterFinish: function(){ 
+            Draggable._dragging[element] = false 
+          }
+        }); 
       },
       zindex: 1000,
       revert: false,
+      quiet: false,
       scroll: false,
       scrollSensitivity: 20,
       scrollSpeed: 15,
-      snap: false   // false, or xy or [x,y] or function(x,y){ return [x,y] }
-    }, arguments[1] || {});
+      snap: false,  // false, or xy or [x,y] or function(x,y){ return [x,y] }
+      delay: 0
+    };
+    
+    if(!arguments[1] || Object.isUndefined(arguments[1].endeffect))
+      Object.extend(defaults, {
+        starteffect: function(element) {
+          element._opacity = Element.getOpacity(element);
+          Draggable._dragging[element] = true;
+          new Effect.Opacity(element, {duration:0.2, from:element._opacity, to:0.7}); 
+        }
+      });
+    
+    var options = Object.extend(defaults, arguments[1] || { });
 
     this.element = $(element);
     
-    if(options.handle && (typeof options.handle == 'string'))
-      this.handle = Element.childrenWithClassName(this.element, options.handle, true)[0];  
+    if(options.handle && Object.isString(options.handle))
+      this.handle = this.element.down('.'+options.handle, 0);
+    
     if(!this.handle) this.handle = $(options.handle);
     if(!this.handle) this.handle = this.element;
     
-    if(options.scroll && !options.scroll.scrollTo && !options.scroll.outerHTML)
+    if(options.scroll && !options.scroll.scrollTo && !options.scroll.outerHTML) {
       options.scroll = $(options.scroll);
+      this._isScrollChild = Element.childOf(this.element, options.scroll);
+    }
 
     Element.makePositioned(this.element); // fix IE    
 
-    this.delta    = this.currentDelta();
     this.options  = options;
     this.dragging = false;   
 
@@ -239,21 +300,18 @@ Draggable.prototype = {
   },
   
   initDrag: function(event) {
+    if(!Object.isUndefined(Draggable._dragging[this.element]) &&
+      Draggable._dragging[this.element]) return;
     if(Event.isLeftClick(event)) {    
       // abort on form elements, fixes a Firefox issue
       var src = Event.element(event);
-      if(src.tagName && (
-        src.tagName=='INPUT' ||
-        src.tagName=='SELECT' ||
-        src.tagName=='OPTION' ||
-        src.tagName=='BUTTON' ||
-        src.tagName=='TEXTAREA')) return;
+      if((tag_name = src.tagName.toUpperCase()) && (
+        tag_name=='INPUT' ||
+        tag_name=='SELECT' ||
+        tag_name=='OPTION' ||
+        tag_name=='BUTTON' ||
+        tag_name=='TEXTAREA')) return;
         
-      if(this.element._revert) {
-        this.element._revert.cancel();
-        this.element._revert = null;
-      }
-      
       var pointer = [Event.pointerX(event), Event.pointerY(event)];
       var pos     = Position.cumulativeOffset(this.element);
       this.offset = [0,1].map( function(i) { return (pointer[i] - pos[i]) });
@@ -265,6 +323,8 @@ Draggable.prototype = {
   
   startDrag: function(event) {
     this.dragging = true;
+    if(!this.delta)
+      this.delta = this.currentDelta();
     
     if(this.options.zindex) {
       this.originalZ = parseInt(Element.getStyle(this.element,'z-index') || 0);
@@ -273,7 +333,9 @@ Draggable.prototype = {
     
     if(this.options.ghosting) {
       this._clone = this.element.cloneNode(true);
-      Position.absolutize(this.element);
+      this.element._originallyAbsolute = (this.element.getStyle('position') == 'absolute');
+      if (!this.element._originallyAbsolute)
+        Position.absolutize(this.element);
       this.element.parentNode.insertBefore(this._clone, this.element);
     }
     
@@ -289,14 +351,20 @@ Draggable.prototype = {
     }
     
     Draggables.notify('onStart', this, event);
+        
     if(this.options.starteffect) this.options.starteffect(this.element);
   },
   
   updateDrag: function(event, pointer) {
     if(!this.dragging) this.startDrag(event);
-    Position.prepare();
-    Droppables.show(pointer, this.element);
+    
+    if(!this.options.quiet){
+      Position.prepare();
+      Droppables.show(pointer, this.element);
+    }
+    
     Draggables.notify('onDrag', this, event);
+    
     this.draw(pointer);
     if(this.options.change) this.options.change(this);
     
@@ -308,8 +376,8 @@ Draggable.prototype = {
         with(this._getWindowScroll(this.options.scroll)) { p = [ left, top, left+width, top+height ]; }
       } else {
         p = Position.page(this.options.scroll);
-        p[0] += this.options.scroll.scrollLeft;
-        p[1] += this.options.scroll.scrollTop;
+        p[0] += this.options.scroll.scrollLeft + Position.deltaX;
+        p[1] += this.options.scroll.scrollTop + Position.deltaY;
         p.push(p[0]+this.options.scroll.offsetWidth);
         p.push(p[1]+this.options.scroll.offsetHeight);
       }
@@ -322,30 +390,44 @@ Draggable.prototype = {
     }
     
     // fix AppleWebKit rendering
-    if(navigator.appVersion.indexOf('AppleWebKit')>0) window.scrollBy(0,0);
+    if(Prototype.Browser.WebKit) window.scrollBy(0,0);
     
     Event.stop(event);
   },
   
   finishDrag: function(event, success) {
     this.dragging = false;
+    
+    if(this.options.quiet){
+      Position.prepare();
+      var pointer = [Event.pointerX(event), Event.pointerY(event)];
+      Droppables.show(pointer, this.element);
+    }
 
     if(this.options.ghosting) {
-      Position.relativize(this.element);
+      if (!this.element._originallyAbsolute)
+        Position.relativize(this.element);
+      delete this.element._originallyAbsolute;
       Element.remove(this._clone);
       this._clone = null;
     }
 
-    if(success) Droppables.fire(event, this.element);
+    var dropped = false; 
+    if(success) { 
+      dropped = Droppables.fire(event, this.element); 
+      if (!dropped) dropped = false; 
+    }
+    if(dropped && this.options.onDropped) this.options.onDropped(this.element);
     Draggables.notify('onEnd', this, event);
 
     var revert = this.options.revert;
-    if(revert && typeof revert == 'function') revert = revert(this.element);
+    if(revert && Object.isFunction(revert)) revert = revert(this.element);
     
     var d = this.currentDelta();
     if(revert && this.options.reverteffect) {
-      this.options.reverteffect(this.element, 
-        d[1]-this.delta[1], d[0]-this.delta[0]);
+      if (dropped == 0 || revert != 'failure')
+        this.options.reverteffect(this.element,
+          d[1]-this.delta[1], d[0]-this.delta[0]);
     } else {
       this.delta = d;
     }
@@ -355,7 +437,7 @@ Draggable.prototype = {
 
     if(this.options.endeffect) 
       this.options.endeffect(this.element);
-
+      
     Draggables.deactivate(this);
     Droppables.reset();
   },
@@ -375,10 +457,15 @@ Draggable.prototype = {
   
   draw: function(point) {
     var pos = Position.cumulativeOffset(this.element);
+    if(this.options.ghosting) {
+      var r   = Position.realOffset(this.element);
+      pos[0] += r[0] - Position.deltaX; pos[1] += r[1] - Position.deltaY;
+    }
+    
     var d = this.currentDelta();
     pos[0] -= d[0]; pos[1] -= d[1];
     
-    if(this.options.scroll && (this.options.scroll != window)) {
+    if(this.options.scroll && (this.options.scroll != window && this._isScrollChild)) {
       pos[0] -= this.options.scroll.scrollLeft-this.originalScrollLeft;
       pos[1] -= this.options.scroll.scrollTop-this.originalScrollTop;
     }
@@ -388,15 +475,15 @@ Draggable.prototype = {
     }.bind(this));
     
     if(this.options.snap) {
-      if(typeof this.options.snap == 'function') {
-        p = this.options.snap(p[0],p[1]);
+      if(Object.isFunction(this.options.snap)) {
+        p = this.options.snap(p[0],p[1],this);
       } else {
-      if(this.options.snap instanceof Array) {
+      if(Object.isArray(this.options.snap)) {
         p = p.map( function(v, i) {
-          return Math.round(v/this.options.snap[i])*this.options.snap[i] }.bind(this))
+          return (v/this.options.snap[i]).round()*this.options.snap[i] }.bind(this))
       } else {
         p = p.map( function(v) {
-          return Math.round(v/this.options.snap)*this.options.snap }.bind(this))
+          return (v/this.options.snap).round()*this.options.snap }.bind(this))
       }
     }}
     
@@ -405,6 +492,7 @@ Draggable.prototype = {
       style.left = p[0] + "px";
     if((!this.options.constraint) || (this.options.constraint=='vertical'))
       style.top  = p[1] + "px";
+    
     if(style.visibility=="hidden") style.visibility = ""; // fix gecko rendering
   },
   
@@ -412,10 +500,12 @@ Draggable.prototype = {
     if(this.scrollInterval) {
       clearInterval(this.scrollInterval);
       this.scrollInterval = null;
+      Draggables._lastScrollPointer = null;
     }
   },
   
   startScrolling: function(speed) {
+    if(!(speed[0] || speed[1])) return;
     this.scrollSpeed = [speed[0]*this.options.scrollSpeed,speed[1]*this.options.scrollSpeed];
     this.lastScrolled = new Date();
     this.scrollInterval = setInterval(this.scroll.bind(this), 10);
@@ -440,7 +530,16 @@ Draggable.prototype = {
     Position.prepare();
     Droppables.show(Draggables._lastPointer, this.element);
     Draggables.notify('onDrag', this);
-    this.draw(Draggables._lastPointer);    
+    if (this._isScrollChild) {
+      Draggables._lastScrollPointer = Draggables._lastScrollPointer || $A(Draggables._lastPointer);
+      Draggables._lastScrollPointer[0] += this.scrollSpeed[0] * delta / 1000;
+      Draggables._lastScrollPointer[1] += this.scrollSpeed[1] * delta / 1000;
+      if (Draggables._lastScrollPointer[0] < 0)
+        Draggables._lastScrollPointer[0] = 0;
+      if (Draggables._lastScrollPointer[1] < 0)
+        Draggables._lastScrollPointer[1] = 0;
+      this.draw(Draggables._lastScrollPointer);
+    }
     
     if(this.options.change) this.options.change(this);
   },
@@ -468,12 +567,13 @@ Draggable.prototype = {
     }
     return { top: T, left: L, width: W, height: H };
   }
-}
+});
+
+Draggable._dragging = { };
 
 /*--------------------------------------------------------------------------*/
 
-var SortableObserver = Class.create();
-SortableObserver.prototype = {
+var SortableObserver = Class.create({
   initialize: function(element, observer) {
     this.element   = $(element);
     this.observer  = observer;
@@ -489,47 +589,68 @@ SortableObserver.prototype = {
     if(this.lastValue != Sortable.serialize(this.element))
       this.observer(this.element)
   }
-}
+});
 
 var Sortable = {
-  sortables: new Array(),
+  SERIALIZE_RULE: /^[^_\-](?:[A-Za-z0-9\-\_]*)[_](.*)$/,
   
-  options: function(element){
-    element = $(element);
-    return this.sortables.detect(function(s) { return s.element == element });
+  sortables: { },
+  
+  _findRootElement: function(element) {
+    while (element.tagName.toUpperCase() != "BODY") {  
+      if(element.id && Sortable.sortables[element.id]) return element;
+      element = element.parentNode;
+    }
+  },
+
+  options: function(element) {
+    element = Sortable._findRootElement($(element));
+    if(!element) return;
+    return Sortable.sortables[element.id];
   },
   
   destroy: function(element){
-    element = $(element);
-    this.sortables.findAll(function(s) { return s.element == element }).each(function(s){
+    var s = Sortable.options(element);
+    
+    if(s) {
       Draggables.removeObserver(s.element);
       s.droppables.each(function(d){ Droppables.remove(d) });
       s.draggables.invoke('destroy');
-    });
-    this.sortables = this.sortables.reject(function(s) { return s.element == element });
+      
+      delete Sortable.sortables[s.element.id];
+    }
   },
-  
+
   create: function(element) {
     element = $(element);
     var options = Object.extend({ 
       element:     element,
       tag:         'li',       // assumes li children, override with tag: 'tagname'
       dropOnEmpty: false,
-      tree:        false,      // fixme: unimplemented
+      tree:        false,
+      treeTag:     'ul',
       overlap:     'vertical', // one of 'vertical', 'horizontal'
       constraint:  'vertical', // one of 'vertical', 'horizontal', false
       containment: element,    // also takes array of elements (or id's); or false
       handle:      false,      // or a CSS class
       only:        false,
+      delay:       0,
       hoverclass:  null,
       ghosting:    false,
+      quiet:       false, 
       scroll:      false,
       scrollSensitivity: 20,
       scrollSpeed: 15,
-      format:      /^[^_]*_(.*)$/,
+      format:      this.SERIALIZE_RULE,
+      
+      // these take arrays of elements or ids and can be 
+      // used for better initialization performance
+      elements:    false,
+      handles:     false,
+      
       onChange:    Prototype.emptyFunction,
       onUpdate:    Prototype.emptyFunction
-    }, arguments[1] || {});
+    }, arguments[1] || { });
 
     // clear any old sortable with same element
     this.destroy(element);
@@ -537,9 +658,11 @@ var Sortable = {
     // build options for the draggables
     var options_for_draggable = {
       revert:      true,
+      quiet:       options.quiet,
       scroll:      options.scroll,
       scrollSpeed: options.scrollSpeed,
       scrollSensitivity: options.scrollSensitivity,
+      delay:       options.delay,
       ghosting:    options.ghosting,
       constraint:  options.constraint,
       handle:      options.handle };
@@ -565,9 +688,16 @@ var Sortable = {
     var options_for_droppable = {
       overlap:     options.overlap,
       containment: options.containment,
+      tree:        options.tree,
       hoverclass:  options.hoverclass,
-      onHover:     Sortable.onHover,
-      greedy:      !options.dropOnEmpty
+      onHover:     Sortable.onHover
+    }
+    
+    var options_for_tree = {
+      onHover:      Sortable.onEmptyHover,
+      overlap:      options.overlap,
+      containment:  options.containment,
+      hoverclass:   options.hoverclass
     }
 
     // fix for gecko engine
@@ -576,27 +706,32 @@ var Sortable = {
     options.draggables = [];
     options.droppables = [];
 
-    // make it so
-
     // drop on empty handling
-    if(options.dropOnEmpty) {
-      Droppables.add(element,
-        {containment: options.containment, onHover: Sortable.onEmptyHover, greedy: false});
+    if(options.dropOnEmpty || options.tree) {
+      Droppables.add(element, options_for_tree);
       options.droppables.push(element);
     }
 
-    (this.findElements(element, options) || []).each( function(e) {
-      // handles are per-draggable
-      var handle = options.handle ? 
-        Element.childrenWithClassName(e, options.handle)[0] : e;    
+    (options.elements || this.findElements(element, options) || []).each( function(e,i) {
+      var handle = options.handles ? $(options.handles[i]) :
+        (options.handle ? $(e).select('.' + options.handle)[0] : e); 
       options.draggables.push(
         new Draggable(e, Object.extend(options_for_draggable, { handle: handle })));
       Droppables.add(e, options_for_droppable);
+      if(options.tree) e.treeNode = element;
       options.droppables.push(e);      
     });
+    
+    if(options.tree) {
+      (Sortable.findTreeElements(element, options) || []).each( function(e) {
+        Droppables.add(e, options_for_tree);
+        e.treeNode = element;
+        options.droppables.push(e);
+      });
+    }
 
     // keep reference
-    this.sortables.push(options);
+    this.sortables[element.id] = options;
 
     // for onupdate
     Draggables.addObserver(new SortableObserver(element, options.onUpdate));
@@ -605,24 +740,21 @@ var Sortable = {
 
   // return all suitable-for-sortable elements in a guaranteed order
   findElements: function(element, options) {
-    if(!element.hasChildNodes()) return null;
-    var elements = [];
-    var only = options.only ? [options.only].flatten() : null;
-    $A(element.childNodes).each( function(e) {
-      if(e.tagName && e.tagName.toUpperCase()==options.tag.toUpperCase() &&
-        (!only || (Element.classNames(e).detect(function(v) { return only.include(v) }))))
-          elements.push(e);
-      if(options.tree) {
-        var grandchildren = this.findElements(e, options);
-        if(grandchildren) elements.push(grandchildren);
-      }
-    });
-
-    return (elements.length>0 ? elements.flatten() : null);
+    return Element.findChildren(
+      element, options.only, options.tree ? true : false, options.tag);
+  },
+  
+  findTreeElements: function(element, options) {
+    return Element.findChildren(
+      element, options.only, options.tree ? true : false, options.treeTag);
   },
 
   onHover: function(element, dropon, overlap) {
-    if(overlap>0.5) {
+    if(Element.isParent(dropon, element)) return;
+
+    if(overlap > .33 && overlap < .66 && Sortable.options(dropon).tree) {
+      return;
+    } else if(overlap>0.5) {
       Sortable.mark(dropon, 'before');
       if(dropon.previousSibling != element) {
         var oldParentNode = element.parentNode;
@@ -645,18 +777,42 @@ var Sortable = {
       }
     }
   },
-
-  onEmptyHover: function(element, dropon) {
-    if(element.parentNode!=dropon) {
-      var oldParentNode = element.parentNode;
-      dropon.appendChild(element);
+  
+  onEmptyHover: function(element, dropon, overlap) {
+    var oldParentNode = element.parentNode;
+    var droponOptions = Sortable.options(dropon);
+        
+    if(!Element.isParent(dropon, element)) {
+      var index;
+      
+      var children = Sortable.findElements(dropon, {tag: droponOptions.tag, only: droponOptions.only});
+      var child = null;
+            
+      if(children) {
+        var offset = Element.offsetSize(dropon, droponOptions.overlap) * (1.0 - overlap);
+        
+        for (index = 0; index < children.length; index += 1) {
+          if (offset - Element.offsetSize (children[index], droponOptions.overlap) >= 0) {
+            offset -= Element.offsetSize (children[index], droponOptions.overlap);
+          } else if (offset - (Element.offsetSize (children[index], droponOptions.overlap) / 2) >= 0) {
+            child = index + 1 < children.length ? children[index + 1] : null;
+            break;
+          } else {
+            child = children[index];
+            break;
+          }
+        }
+      }
+      
+      dropon.insertBefore(element, child);
+      
       Sortable.options(oldParentNode).onChange(element);
-      Sortable.options(dropon).onChange(element);
+      droponOptions.onChange(element);
     }
   },
 
   unmark: function() {
-    if(Sortable._marker) Element.hide(Sortable._marker);
+    if(Sortable._marker) Sortable._marker.hide();
   },
 
   mark: function(dropon, position) {
@@ -665,28 +821,84 @@ var Sortable = {
     if(sortable && !sortable.ghosting) return; 
 
     if(!Sortable._marker) {
-      Sortable._marker = $('dropmarker') || document.createElement('DIV');
-      Element.hide(Sortable._marker);
-      Element.addClassName(Sortable._marker, 'dropmarker');
-      Sortable._marker.style.position = 'absolute';
+      Sortable._marker = 
+        ($('dropmarker') || Element.extend(document.createElement('DIV'))).
+          hide().addClassName('dropmarker').setStyle({position:'absolute'});
       document.getElementsByTagName("body").item(0).appendChild(Sortable._marker);
     }    
     var offsets = Position.cumulativeOffset(dropon);
-    Sortable._marker.style.left = offsets[0] + 'px';
-    Sortable._marker.style.top = offsets[1] + 'px';
+    Sortable._marker.setStyle({left: offsets[0]+'px', top: offsets[1] + 'px'});
     
     if(position=='after')
       if(sortable.overlap == 'horizontal') 
-        Sortable._marker.style.left = (offsets[0]+dropon.clientWidth) + 'px';
+        Sortable._marker.setStyle({left: (offsets[0]+dropon.clientWidth) + 'px'});
       else
-        Sortable._marker.style.top = (offsets[1]+dropon.clientHeight) + 'px';
+        Sortable._marker.setStyle({top: (offsets[1]+dropon.clientHeight) + 'px'});
     
-    Element.show(Sortable._marker);
+    Sortable._marker.show();
+  },
+  
+  _tree: function(element, options, parent) {
+    var children = Sortable.findElements(element, options) || [];
+  
+    for (var i = 0; i < children.length; ++i) {
+      var match = children[i].id.match(options.format);
+
+      if (!match) continue;
+      
+      var child = {
+        id: encodeURIComponent(match ? match[1] : null),
+        element: element,
+        parent: parent,
+        children: [],
+        position: parent.children.length,
+        container: $(children[i]).down(options.treeTag)
+      }
+      
+      /* Get the element containing the children and recurse over it */
+      if (child.container)
+        this._tree(child.container, options, child)
+      
+      parent.children.push (child);
+    }
+
+    return parent; 
+  },
+
+  tree: function(element) {
+    element = $(element);
+    var sortableOptions = this.options(element);
+    var options = Object.extend({
+      tag: sortableOptions.tag,
+      treeTag: sortableOptions.treeTag,
+      only: sortableOptions.only,
+      name: element.id,
+      format: sortableOptions.format
+    }, arguments[1] || { });
+    
+    var root = {
+      id: null,
+      parent: null,
+      children: [],
+      container: element,
+      position: 0
+    }
+    
+    return Sortable._tree(element, options, root);
+  },
+
+  /* Construct a [i] index for a particular node */
+  _constructIndex: function(node) {
+    var index = '';
+    do {
+      if (node.id) index = '[' + node.position + ']' + index;
+    } while ((node = node.parent) != null);
+    return index;
   },
 
   sequence: function(element) {
     element = $(element);
-    var options = Object.extend(this.options(element), arguments[1] || {});
+    var options = Object.extend(this.options(element), arguments[1] || { });
     
     return $(this.findElements(element, options) || []).map( function(item) {
       return item.id.match(options.format) ? item.id.match(options.format)[1] : '';
@@ -695,9 +907,9 @@ var Sortable = {
 
   setSequence: function(element, new_sequence) {
     element = $(element);
-    var options = Object.extend(this.options(element), arguments[2] || {});
+    var options = Object.extend(this.options(element), arguments[2] || { });
     
-    var nodeMap = {};
+    var nodeMap = { };
     this.findElements(element, options).each( function(n) {
         if (n.id.match(options.format))
             nodeMap[n.id.match(options.format)[1]] = [n, n.parentNode];
@@ -705,20 +917,58 @@ var Sortable = {
     });
    
     new_sequence.each(function(ident) {
-        var n = nodeMap[ident];
-        if (n) {
-            n[1].appendChild(n[0]);
-            delete nodeMap[ident];
-        }
+      var n = nodeMap[ident];
+      if (n) {
+        n[1].appendChild(n[0]);
+        delete nodeMap[ident];
+      }
     });
   },
-
+  
   serialize: function(element) {
     element = $(element);
+    var options = Object.extend(Sortable.options(element), arguments[1] || { });
     var name = encodeURIComponent(
       (arguments[1] && arguments[1].name) ? arguments[1].name : element.id);
-    return Sortable.sequence(element, arguments[1]).map( function(item) {
-      return name + "[]=" + encodeURIComponent(item);
-    }).join('&');
+    
+    if (options.tree) {
+      return Sortable.tree(element, arguments[1]).children.map( function (item) {
+        return [name + Sortable._constructIndex(item) + "[id]=" + 
+                encodeURIComponent(item.id)].concat(item.children.map(arguments.callee));
+      }).flatten().join('&');
+    } else {
+      return Sortable.sequence(element, arguments[1]).map( function(item) {
+        return name + "[]=" + encodeURIComponent(item);
+      }).join('&');
+    }
   }
 }
+
+// Returns true if child is contained within element
+Element.isParent = function(child, element) {
+  if (!child.parentNode || child == element) return false;
+  if (child.parentNode == element) return true;
+  return Element.isParent(child.parentNode, element);
+}
+
+Element.findChildren = function(element, only, recursive, tagName) {   
+  if(!element.hasChildNodes()) return null;
+  tagName = tagName.toUpperCase();
+  if(only) only = [only].flatten();
+  var elements = [];
+  $A(element.childNodes).each( function(e) {
+    if(e.tagName && e.tagName.toUpperCase()==tagName &&
+      (!only || (Element.classNames(e).detect(function(v) { return only.include(v) }))))
+        elements.push(e);
+    if(recursive) {
+      var grandchildren = Element.findChildren(e, only, recursive, tagName);
+      if(grandchildren) elements.push(grandchildren);
+    }
+  });
+
+  return (elements.length>0 ? elements.flatten() : []);
+}
+
+Element.offsetSize = function (element, type) {
+  return element['offset' + ((type=='vertical' || type=='height') ? 'Height' : 'Width')];
+}
diff --git a/usr/local/www/javascript/scriptaculous/effects.js b/usr/local/www/javascript/scriptaculous/effects.js
index bcf836b..b8c0259 100644
--- a/usr/local/www/javascript/scriptaculous/effects.js
+++ b/usr/local/www/javascript/scriptaculous/effects.js
@@ -1,26 +1,29 @@
-// Copyright (c) 2005 Thomas Fuchs (http://script.aculo.us, http://mir.aculo.us)
+// script.aculo.us effects.js v1.8.1, Thu Jan 03 22:07:12 -0500 2008
+
+// Copyright (c) 2005-2007 Thomas Fuchs (http://script.aculo.us, http://mir.aculo.us)
 // Contributors:
 //  Justin Palmer (http://encytemedia.com/)
 //  Mark Pilgrim (http://diveintomark.org/)
 //  Martin Bialasinki
 // 
-// See scriptaculous.js for full license.  
+// script.aculo.us is freely distributable under the terms of an MIT-style license.
+// For details, see the script.aculo.us web site: http://script.aculo.us/ 
 
 // converts rgb() and #xxx to #xxxxxx format,  
 // returns self (or first argument) if not convertable  
 String.prototype.parseColor = function() {  
-  var color = '#';  
-  if(this.slice(0,4) == 'rgb(') {  
+  var color = '#';
+  if (this.slice(0,4) == 'rgb(') {  
     var cols = this.slice(4,this.length-1).split(',');  
     var i=0; do { color += parseInt(cols[i]).toColorPart() } while (++i<3);  
   } else {  
-    if(this.slice(0,1) == '#') {  
-      if(this.length==4) for(var i=1;i<4;i++) color += (this.charAt(i) + this.charAt(i)).toLowerCase();  
-      if(this.length==7) color = this.toLowerCase();  
+    if (this.slice(0,1) == '#') {  
+      if (this.length==4) for(var i=1;i<4;i++) color += (this.charAt(i) + this.charAt(i)).toLowerCase();  
+      if (this.length==7) color = this.toLowerCase();  
     }  
   }  
-  return(color.length==7 ? color : (arguments[0] || this));  
-}
+  return (color.length==7 ? color : (arguments[0] || this));  
+};
 
 /*--------------------------------------------------------------------------*/
 
@@ -29,7 +32,7 @@ Element.collectTextNodes = function(element) {
     return (node.nodeType==3 ? node.nodeValue : 
       (node.hasChildNodes() ? Element.collectTextNodes(node) : ''));
   }).flatten().join('');
-}
+};
 
 Element.collectTextNodesIgnoreClass = function(element, className) {  
   return $A($(element).childNodes).collect( function(node) {
@@ -37,50 +40,18 @@ Element.collectTextNodesIgnoreClass = function(element, className) {
       ((node.hasChildNodes() && !Element.hasClassName(node,className)) ? 
         Element.collectTextNodesIgnoreClass(node, className) : ''));
   }).flatten().join('');
-}
+};
 
 Element.setContentZoom = function(element, percent) {
   element = $(element);  
-  Element.setStyle(element, {fontSize: (percent/100) + 'em'});   
-  if(navigator.appVersion.indexOf('AppleWebKit')>0) window.scrollBy(0,0);
-}
-
-Element.getOpacity = function(element){  
-  var opacity;
-  if (opacity = Element.getStyle(element, 'opacity'))  
-    return parseFloat(opacity);  
-  if (opacity = (Element.getStyle(element, 'filter') || '').match(/alpha\(opacity=(.*)\)/))  
-    if(opacity[1]) return parseFloat(opacity[1]) / 100;  
-  return 1.0;  
-}
-
-Element.setOpacity = function(element, value){  
-  element= $(element);  
-  if (value == 1){
-    Element.setStyle(element, { opacity: 
-      (/Gecko/.test(navigator.userAgent) && !/Konqueror|Safari|KHTML/.test(navigator.userAgent)) ? 
-      0.999999 : null });
-    if(/MSIE/.test(navigator.userAgent))  
-      Element.setStyle(element, {filter: Element.getStyle(element,'filter').replace(/alpha\([^\)]*\)/gi,'')});  
-  } else {  
-    if(value < 0.00001) value = 0;  
-    Element.setStyle(element, {opacity: value});
-    if(/MSIE/.test(navigator.userAgent))  
-     Element.setStyle(element, 
-       { filter: Element.getStyle(element,'filter').replace(/alpha\([^\)]*\)/gi,'') +
-                 'alpha(opacity='+value*100+')' });  
-  }
-}  
- 
-Element.getInlineOpacity = function(element){  
-  return $(element).style.opacity || '';
-}  
+  element.setStyle({fontSize: (percent/100) + 'em'});   
+  if (Prototype.Browser.WebKit) window.scrollBy(0,0);
+  return element;
+};
 
-Element.childrenWithClassName = function(element, className, findFirst) {
-  return [$A($(element).getElementsByTagName('*'))[findFirst ? 'detect' : 'select']( function(c) { 
-    return c.className ? Element.hasClassName(c, className) : false;
-  })].flatten();
-}
+Element.getInlineOpacity = function(element){
+  return $(element).style.opacity || '';
+};
 
 Element.forceRerendering = function(element) {
   try {
@@ -91,30 +62,65 @@ Element.forceRerendering = function(element) {
   } catch(e) { }
 };
 
-['setOpacity','getOpacity','getInlineOpacity','forceRerendering','setContentZoom',
- 'collectTextNodes','collectTextNodesIgnoreClass','childrenWithClassName'].each( 
-  function(f) { Element.Methods[f] = Element[f]; } 
-);
-
-/*--------------------------------------------------------------------------*/
-
-Array.prototype.call = function() {
-  var args = arguments;
-  this.each(function(f){ f.apply(this, args) });
-}
-
 /*--------------------------------------------------------------------------*/
 
 var Effect = {
+  _elementDoesNotExistError: {
+    name: 'ElementDoesNotExistError',
+    message: 'The specified DOM element does not exist, but is required for this effect to operate'
+  },
+  Transitions: {
+    linear: Prototype.K,
+    sinoidal: function(pos) {
+      return (-Math.cos(pos*Math.PI)/2) + 0.5;
+    },
+    reverse: function(pos) {
+      return 1-pos;
+    },
+    flicker: function(pos) {
+      var pos = ((-Math.cos(pos*Math.PI)/4) + 0.75) + Math.random()/4;
+      return pos > 1 ? 1 : pos;
+    },
+    wobble: function(pos) {
+      return (-Math.cos(pos*Math.PI*(9*pos))/2) + 0.5;
+    },
+    pulse: function(pos, pulses) { 
+      pulses = pulses || 5; 
+      return (
+        ((pos % (1/pulses)) * pulses).round() == 0 ? 
+              ((pos * pulses * 2) - (pos * pulses * 2).floor()) : 
+          1 - ((pos * pulses * 2) - (pos * pulses * 2).floor())
+        );
+    },
+    spring: function(pos) { 
+      return 1 - (Math.cos(pos * 4.5 * Math.PI) * Math.exp(-pos * 6)); 
+    },
+    none: function(pos) {
+      return 0;
+    },
+    full: function(pos) {
+      return 1;
+    }
+  },
+  DefaultOptions: {
+    duration:   1.0,   // seconds
+    fps:        100,   // 100= assume 66fps max.
+    sync:       false, // true for combining
+    from:       0.0,
+    to:         1.0,
+    delay:      0.0,
+    queue:      'parallel'
+  },
   tagifyText: function(element) {
     var tagifyStyle = 'position:relative';
-    if(/MSIE/.test(navigator.userAgent)) tagifyStyle += ';zoom:1';
+    if (Prototype.Browser.IE) tagifyStyle += ';zoom:1';
+    
     element = $(element);
     $A(element.childNodes).each( function(child) {
-      if(child.nodeType==3) {
+      if (child.nodeType==3) {
         child.nodeValue.toArray().each( function(character) {
           element.insertBefore(
-            Builder.node('span',{style: tagifyStyle},
+            new Element('span', {style: tagifyStyle}).update(
               character == ' ' ? String.fromCharCode(160) : character), 
               child);
         });
@@ -124,8 +130,8 @@ var Effect = {
   },
   multiple: function(element, effect) {
     var elements;
-    if(((typeof element == 'object') || 
-        (typeof element == 'function')) && 
+    if (((typeof element == 'object') || 
+        Object.isFunction(element)) && 
        (element.length))
       elements = element;
     else
@@ -134,7 +140,7 @@ var Effect = {
     var options = Object.extend({
       speed: 0.1,
       delay: 0.0
-    }, arguments[2] || {});
+    }, arguments[2] || { });
     var masterDelay = options.delay;
 
     $A(elements).each( function(element, index) {
@@ -151,51 +157,20 @@ var Effect = {
     effect = (effect || 'appear').toLowerCase();
     var options = Object.extend({
       queue: { position:'end', scope:(element.id || 'global'), limit: 1 }
-    }, arguments[2] || {});
+    }, arguments[2] || { });
     Effect[element.visible() ? 
       Effect.PAIRS[effect][1] : Effect.PAIRS[effect][0]](element, options);
   }
 };
 
-var Effect2 = Effect; // deprecated
-
-/* ------------- transitions ------------- */
-
-Effect.Transitions = {}
-
-Effect.Transitions.linear = function(pos) {
-  return pos;
-}
-Effect.Transitions.sinoidal = function(pos) {
-  return (-Math.cos(pos*Math.PI)/2) + 0.5;
-}
-Effect.Transitions.reverse  = function(pos) {
-  return 1-pos;
-}
-Effect.Transitions.flicker = function(pos) {
-  return ((-Math.cos(pos*Math.PI)/4) + 0.75) + Math.random()/4;
-}
-Effect.Transitions.wobble = function(pos) {
-  return (-Math.cos(pos*Math.PI*(9*pos))/2) + 0.5;
-}
-Effect.Transitions.pulse = function(pos) {
-  return (Math.floor(pos*10) % 2 == 0 ? 
-    (pos*10-Math.floor(pos*10)) : 1-(pos*10-Math.floor(pos*10)));
-}
-Effect.Transitions.none = function(pos) {
-  return 0;
-}
-Effect.Transitions.full = function(pos) {
-  return 1;
-}
+Effect.DefaultOptions.transition = Effect.Transitions.sinoidal;
 
 /* ------------- core effects ------------- */
 
-Effect.ScopedQueue = Class.create();
-Object.extend(Object.extend(Effect.ScopedQueue.prototype, Enumerable), {
+Effect.ScopedQueue = Class.create(Enumerable, {
   initialize: function() {
     this.effects  = [];
-    this.interval = null;
+    this.interval = null;    
   },
   _each: function(iterator) {
     this.effects._each(iterator);
@@ -203,7 +178,7 @@ Object.extend(Object.extend(Effect.ScopedQueue.prototype, Enumerable), {
   add: function(effect) {
     var timestamp = new Date().getTime();
     
-    var position = (typeof effect.options.queue == 'string') ? 
+    var position = Object.isString(effect.options.queue) ? 
       effect.options.queue : effect.options.queue.position;
     
     switch(position) {
@@ -214,6 +189,9 @@ Object.extend(Object.extend(Effect.ScopedQueue.prototype, Enumerable), {
             e.finishOn += effect.finishOn;
           });
         break;
+      case 'with-last':
+        timestamp = this.effects.pluck('startOn').max() || timestamp;
+        break;
       case 'end':
         // start effect after last queued effect has finished
         timestamp = this.effects.pluck('finishOn').max() || timestamp;
@@ -223,115 +201,111 @@ Object.extend(Object.extend(Effect.ScopedQueue.prototype, Enumerable), {
     effect.startOn  += timestamp;
     effect.finishOn += timestamp;
 
-    if(!effect.options.queue.limit || (this.effects.length < effect.options.queue.limit))
+    if (!effect.options.queue.limit || (this.effects.length < effect.options.queue.limit))
       this.effects.push(effect);
     
-    if(!this.interval) 
-      this.interval = setInterval(this.loop.bind(this), 40);
+    if (!this.interval)
+      this.interval = setInterval(this.loop.bind(this), 15);
   },
   remove: function(effect) {
     this.effects = this.effects.reject(function(e) { return e==effect });
-    if(this.effects.length == 0) {
+    if (this.effects.length == 0) {
       clearInterval(this.interval);
       this.interval = null;
     }
   },
   loop: function() {
     var timePos = new Date().getTime();
-    this.effects.invoke('loop', timePos);
+    for(var i=0, len=this.effects.length;i<len;i++) 
+      this.effects[i] && this.effects[i].loop(timePos);
   }
 });
 
 Effect.Queues = {
   instances: $H(),
   get: function(queueName) {
-    if(typeof queueName != 'string') return queueName;
+    if (!Object.isString(queueName)) return queueName;
     
-    if(!this.instances[queueName])
-      this.instances[queueName] = new Effect.ScopedQueue();
-      
-    return this.instances[queueName];
+    return this.instances.get(queueName) ||
+      this.instances.set(queueName, new Effect.ScopedQueue());
   }
-}
+};
 Effect.Queue = Effect.Queues.get('global');
 
-Effect.DefaultOptions = {
-  transition: Effect.Transitions.sinoidal,
-  duration:   1.0,   // seconds
-  fps:        25.0,  // max. 25fps due to Effect.Queue implementation
-  sync:       false, // true for combining
-  from:       0.0,
-  to:         1.0,
-  delay:      0.0,
-  queue:      'parallel'
-}
-
-Effect.Base = function() {};
-Effect.Base.prototype = {
+Effect.Base = Class.create({
   position: null,
   start: function(options) {
-    this.options      = Object.extend(Object.extend({},Effect.DefaultOptions), options || {});
+    function codeForEvent(options,eventName){
+      return (
+        (options[eventName+'Internal'] ? 'this.options.'+eventName+'Internal(this);' : '') +
+        (options[eventName] ? 'this.options.'+eventName+'(this);' : '')
+      );
+    }
+    if (options && options.transition === false) options.transition = Effect.Transitions.linear;
+    this.options      = Object.extend(Object.extend({ },Effect.DefaultOptions), options || { });
     this.currentFrame = 0;
     this.state        = 'idle';
     this.startOn      = this.options.delay*1000;
-    this.finishOn     = this.startOn + (this.options.duration*1000);
+    this.finishOn     = this.startOn+(this.options.duration*1000);
+    this.fromToDelta  = this.options.to-this.options.from;
+    this.totalTime    = this.finishOn-this.startOn;
+    this.totalFrames  = this.options.fps*this.options.duration;
+    
+    eval('this.render = function(pos){ '+
+      'if (this.state=="idle"){this.state="running";'+
+      codeForEvent(this.options,'beforeSetup')+
+      (this.setup ? 'this.setup();':'')+ 
+      codeForEvent(this.options,'afterSetup')+
+      '};if (this.state=="running"){'+
+      'pos=this.options.transition(pos)*'+this.fromToDelta+'+'+this.options.from+';'+
+      'this.position=pos;'+
+      codeForEvent(this.options,'beforeUpdate')+
+      (this.update ? 'this.update(pos);':'')+
+      codeForEvent(this.options,'afterUpdate')+
+      '}}');
+    
     this.event('beforeStart');
-    if(!this.options.sync)
-      Effect.Queues.get(typeof this.options.queue == 'string' ? 
+    if (!this.options.sync)
+      Effect.Queues.get(Object.isString(this.options.queue) ? 
         'global' : this.options.queue.scope).add(this);
   },
   loop: function(timePos) {
-    if(timePos >= this.startOn) {
-      if(timePos >= this.finishOn) {
+    if (timePos >= this.startOn) {
+      if (timePos >= this.finishOn) {
         this.render(1.0);
         this.cancel();
         this.event('beforeFinish');
-        if(this.finish) this.finish(); 
+        if (this.finish) this.finish(); 
         this.event('afterFinish');
         return;  
       }
-      var pos   = (timePos - this.startOn) / (this.finishOn - this.startOn);
-      var frame = Math.round(pos * this.options.fps * this.options.duration);
-      if(frame > this.currentFrame) {
+      var pos   = (timePos - this.startOn) / this.totalTime,
+          frame = (pos * this.totalFrames).round();
+      if (frame > this.currentFrame) {
         this.render(pos);
         this.currentFrame = frame;
       }
     }
   },
-  render: function(pos) {
-    if(this.state == 'idle') {
-      this.state = 'running';
-      this.event('beforeSetup');
-      if(this.setup) this.setup();
-      this.event('afterSetup');
-    }
-    if(this.state == 'running') {
-      if(this.options.transition) pos = this.options.transition(pos);
-      pos *= (this.options.to-this.options.from);
-      pos += this.options.from;
-      this.position = pos;
-      this.event('beforeUpdate');
-      if(this.update) this.update(pos);
-      this.event('afterUpdate');
-    }
-  },
   cancel: function() {
-    if(!this.options.sync)
-      Effect.Queues.get(typeof this.options.queue == 'string' ? 
+    if (!this.options.sync)
+      Effect.Queues.get(Object.isString(this.options.queue) ? 
         'global' : this.options.queue.scope).remove(this);
     this.state = 'finished';
   },
   event: function(eventName) {
-    if(this.options[eventName + 'Internal']) this.options[eventName + 'Internal'](this);
-    if(this.options[eventName]) this.options[eventName](this);
+    if (this.options[eventName + 'Internal']) this.options[eventName + 'Internal'](this);
+    if (this.options[eventName]) this.options[eventName](this);
   },
   inspect: function() {
-    return '#<Effect:' + $H(this).inspect() + ',options:' + $H(this.options).inspect() + '>';
+    var data = $H();
+    for(property in this)
+      if (!Object.isFunction(this[property])) data.set(property, this[property]);
+    return '#<Effect:' + data.inspect() + ',options:' + $H(this.options).inspect() + '>';
   }
-}
+});
 
-Effect.Parallel = Class.create();
-Object.extend(Object.extend(Effect.Parallel.prototype, Effect.Base.prototype), {
+Effect.Parallel = Class.create(Effect.Base, {
   initialize: function(effects) {
     this.effects = effects || [];
     this.start(arguments[1]);
@@ -344,23 +318,45 @@ Object.extend(Object.extend(Effect.Parallel.prototype, Effect.Base.prototype), {
       effect.render(1.0);
       effect.cancel();
       effect.event('beforeFinish');
-      if(effect.finish) effect.finish(position);
+      if (effect.finish) effect.finish(position);
       effect.event('afterFinish');
     });
   }
 });
 
-Effect.Opacity = Class.create();
-Object.extend(Object.extend(Effect.Opacity.prototype, Effect.Base.prototype), {
+Effect.Tween = Class.create(Effect.Base, {
+  initialize: function(object, from, to) {
+    object = Object.isString(object) ? $(object) : object;
+    var args = $A(arguments), method = args.last(), 
+      options = args.length == 5 ? args[3] : null;
+    this.method = Object.isFunction(method) ? method.bind(object) :
+      Object.isFunction(object[method]) ? object[method].bind(object) : 
+      function(value) { object[method] = value };
+    this.start(Object.extend({ from: from, to: to }, options || { }));
+  },
+  update: function(position) {
+    this.method(position);
+  }
+});
+
+Effect.Event = Class.create(Effect.Base, {
+  initialize: function() {
+    this.start(Object.extend({ duration: 0 }, arguments[0] || { }));
+  },
+  update: Prototype.emptyFunction
+});
+
+Effect.Opacity = Class.create(Effect.Base, {
   initialize: function(element) {
     this.element = $(element);
+    if (!this.element) throw(Effect._elementDoesNotExistError);
     // make this work on IE on elements without 'layout'
-    if(/MSIE/.test(navigator.userAgent) && (!this.element.hasLayout))
+    if (Prototype.Browser.IE && (!this.element.currentStyle.hasLayout))
       this.element.setStyle({zoom: 1});
     var options = Object.extend({
       from: this.element.getOpacity() || 0.0,
       to:   1.0
-    }, arguments[1] || {});
+    }, arguments[1] || { });
     this.start(options);
   },
   update: function(position) {
@@ -368,35 +364,30 @@ Object.extend(Object.extend(Effect.Opacity.prototype, Effect.Base.prototype), {
   }
 });
 
-Effect.Move = Class.create();
-Object.extend(Object.extend(Effect.Move.prototype, Effect.Base.prototype), {
+Effect.Move = Class.create(Effect.Base, {
   initialize: function(element) {
     this.element = $(element);
+    if (!this.element) throw(Effect._elementDoesNotExistError);
     var options = Object.extend({
       x:    0,
       y:    0,
       mode: 'relative'
-    }, arguments[1] || {});
+    }, arguments[1] || { });
     this.start(options);
   },
   setup: function() {
-    // Bug in Opera: Opera returns the "real" position of a static element or
-    // relative element that does not have top/left explicitly set.
-    // ==> Always set top and left for position relative elements in your stylesheets 
-    // (to 0 if you do not need them) 
     this.element.makePositioned();
     this.originalLeft = parseFloat(this.element.getStyle('left') || '0');
     this.originalTop  = parseFloat(this.element.getStyle('top')  || '0');
-    if(this.options.mode == 'absolute') {
-      // absolute movement, so we need to calc deltaX and deltaY
+    if (this.options.mode == 'absolute') {
       this.options.x = this.options.x - this.originalLeft;
       this.options.y = this.options.y - this.originalTop;
     }
   },
   update: function(position) {
     this.element.setStyle({
-      left: this.options.x  * position + this.originalLeft + 'px',
-      top:  this.options.y  * position + this.originalTop  + 'px'
+      left: (this.options.x  * position + this.originalLeft).round() + 'px',
+      top:  (this.options.y  * position + this.originalTop).round()  + 'px'
     });
   }
 });
@@ -404,29 +395,29 @@ Object.extend(Object.extend(Effect.Move.prototype, Effect.Base.prototype), {
 // for backwards compatibility
 Effect.MoveBy = function(element, toTop, toLeft) {
   return new Effect.Move(element, 
-    Object.extend({ x: toLeft, y: toTop }, arguments[3] || {}));
+    Object.extend({ x: toLeft, y: toTop }, arguments[3] || { }));
 };
 
-Effect.Scale = Class.create();
-Object.extend(Object.extend(Effect.Scale.prototype, Effect.Base.prototype), {
+Effect.Scale = Class.create(Effect.Base, {
   initialize: function(element, percent) {
-    this.element = $(element)
+    this.element = $(element);
+    if (!this.element) throw(Effect._elementDoesNotExistError);
     var options = Object.extend({
       scaleX: true,
       scaleY: true,
       scaleContent: true,
       scaleFromCenter: false,
-      scaleMode: 'box',        // 'box' or 'contents' or {} with provided values
+      scaleMode: 'box',        // 'box' or 'contents' or { } with provided values
       scaleFrom: 100.0,
       scaleTo:   percent
-    }, arguments[2] || {});
+    }, arguments[2] || { });
     this.start(options);
   },
   setup: function() {
     this.restoreAfterFinish = this.options.restoreAfterFinish || false;
     this.elementPositioning = this.element.getStyle('position');
     
-    this.originalStyle = {};
+    this.originalStyle = { };
     ['top','left','width','height','fontSize'].each( function(k) {
       this.originalStyle[k] = this.element.style[k];
     }.bind(this));
@@ -435,8 +426,8 @@ Object.extend(Object.extend(Effect.Scale.prototype, Effect.Base.prototype), {
     this.originalLeft = this.element.offsetLeft;
     
     var fontSize = this.element.getStyle('font-size') || '100%';
-    ['em','px','%'].each( function(fontSizeType) {
-      if(fontSize.indexOf(fontSizeType)>0) {
+    ['em','px','%','pt'].each( function(fontSizeType) {
+      if (fontSize.indexOf(fontSizeType)>0) {
         this.fontSize     = parseFloat(fontSize);
         this.fontSizeType = fontSizeType;
       }
@@ -445,17 +436,17 @@ Object.extend(Object.extend(Effect.Scale.prototype, Effect.Base.prototype), {
     this.factor = (this.options.scaleTo - this.options.scaleFrom)/100;
     
     this.dims = null;
-    if(this.options.scaleMode=='box')
+    if (this.options.scaleMode=='box')
       this.dims = [this.element.offsetHeight, this.element.offsetWidth];
-    if(/^content/.test(this.options.scaleMode))
+    if (/^content/.test(this.options.scaleMode))
       this.dims = [this.element.scrollHeight, this.element.scrollWidth];
-    if(!this.dims)
+    if (!this.dims)
       this.dims = [this.options.scaleMode.originalHeight,
                    this.options.scaleMode.originalWidth];
   },
   update: function(position) {
     var currentScale = (this.options.scaleFrom/100.0) + (this.factor * position);
-    if(this.options.scaleContent && this.fontSize)
+    if (this.options.scaleContent && this.fontSize)
       this.element.setStyle({fontSize: this.fontSize * currentScale + this.fontSizeType });
     this.setDimensions(this.dims[0] * currentScale, this.dims[1] * currentScale);
   },
@@ -463,41 +454,43 @@ Object.extend(Object.extend(Effect.Scale.prototype, Effect.Base.prototype), {
     if (this.restoreAfterFinish) this.element.setStyle(this.originalStyle);
   },
   setDimensions: function(height, width) {
-    var d = {};
-    if(this.options.scaleX) d.width = width + 'px';
-    if(this.options.scaleY) d.height = height + 'px';
-    if(this.options.scaleFromCenter) {
+    var d = { };
+    if (this.options.scaleX) d.width = width.round() + 'px';
+    if (this.options.scaleY) d.height = height.round() + 'px';
+    if (this.options.scaleFromCenter) {
       var topd  = (height - this.dims[0])/2;
       var leftd = (width  - this.dims[1])/2;
-      if(this.elementPositioning == 'absolute') {
-        if(this.options.scaleY) d.top = this.originalTop-topd + 'px';
-        if(this.options.scaleX) d.left = this.originalLeft-leftd + 'px';
+      if (this.elementPositioning == 'absolute') {
+        if (this.options.scaleY) d.top = this.originalTop-topd + 'px';
+        if (this.options.scaleX) d.left = this.originalLeft-leftd + 'px';
       } else {
-        if(this.options.scaleY) d.top = -topd + 'px';
-        if(this.options.scaleX) d.left = -leftd + 'px';
+        if (this.options.scaleY) d.top = -topd + 'px';
+        if (this.options.scaleX) d.left = -leftd + 'px';
       }
     }
     this.element.setStyle(d);
   }
 });
 
-Effect.Highlight = Class.create();
-Object.extend(Object.extend(Effect.Highlight.prototype, Effect.Base.prototype), {
+Effect.Highlight = Class.create(Effect.Base, {
   initialize: function(element) {
     this.element = $(element);
-    var options = Object.extend({ startcolor: '#ffff99' }, arguments[1] || {});
+    if (!this.element) throw(Effect._elementDoesNotExistError);
+    var options = Object.extend({ startcolor: '#ffff99' }, arguments[1] || { });
     this.start(options);
   },
   setup: function() {
     // Prevent executing on elements not in the layout flow
-    if(this.element.getStyle('display')=='none') { this.cancel(); return; }
+    if (this.element.getStyle('display')=='none') { this.cancel(); return; }
     // Disable background image during the effect
-    this.oldStyle = {
-      backgroundImage: this.element.getStyle('background-image') };
-    this.element.setStyle({backgroundImage: 'none'});
-    if(!this.options.endcolor)
+    this.oldStyle = { };
+    if (!this.options.keepBackgroundImage) {
+      this.oldStyle.backgroundImage = this.element.getStyle('background-image');
+      this.element.setStyle({backgroundImage: 'none'});
+    }
+    if (!this.options.endcolor)
       this.options.endcolor = this.element.getStyle('background-color').parseColor('#ffffff');
-    if(!this.options.restorecolor)
+    if (!this.options.restorecolor)
       this.options.restorecolor = this.element.getStyle('background-color');
     // init color calculations
     this._base  = $R(0,2).map(function(i){ return parseInt(this.options.startcolor.slice(i*2+1,i*2+3),16) }.bind(this));
@@ -505,7 +498,7 @@ Object.extend(Object.extend(Effect.Highlight.prototype, Effect.Base.prototype),
   },
   update: function(position) {
     this.element.setStyle({backgroundColor: $R(0,2).inject('#',function(m,v,i){
-      return m+(Math.round(this._base[i]+(this._delta[i]*position)).toColorPart()); }.bind(this)) });
+      return m+((this._base[i]+(this._delta[i]*position)).round().toColorPart()); }.bind(this)) });
   },
   finish: function() {
     this.element.setStyle(Object.extend(this.oldStyle, {
@@ -514,30 +507,21 @@ Object.extend(Object.extend(Effect.Highlight.prototype, Effect.Base.prototype),
   }
 });
 
-Effect.ScrollTo = Class.create();
-Object.extend(Object.extend(Effect.ScrollTo.prototype, Effect.Base.prototype), {
-  initialize: function(element) {
-    this.element = $(element);
-    this.start(arguments[1] || {});
-  },
-  setup: function() {
-    Position.prepare();
-    var offsets = Position.cumulativeOffset(this.element);
-    if(this.options.offset) offsets[1] += this.options.offset;
-    var max = window.innerHeight ? 
-      window.height - window.innerHeight :
-      document.body.scrollHeight - 
-        (document.documentElement.clientHeight ? 
-          document.documentElement.clientHeight : document.body.clientHeight);
-    this.scrollStart = Position.deltaY;
-    this.delta = (offsets[1] > max ? max : offsets[1]) - this.scrollStart;
-  },
-  update: function(position) {
-    Position.prepare();
-    window.scrollTo(Position.deltaX, 
-      this.scrollStart + (position*this.delta));
-  }
-});
+Effect.ScrollTo = function(element) {
+  var options = arguments[1] || { },
+    scrollOffsets = document.viewport.getScrollOffsets(),
+    elementOffsets = $(element).cumulativeOffset(),
+    max = (window.height || document.body.scrollHeight) - document.viewport.getHeight();  
+
+  if (options.offset) elementOffsets[1] += options.offset;
+
+  return new Effect.Tween(null,
+    scrollOffsets.top,
+    elementOffsets[1] > max ? max : elementOffsets[1],
+    options,
+    function(p){ scrollTo(scrollOffsets.left, p.round()) }
+  );
+};
 
 /* ------------- combination effects ------------- */
 
@@ -545,15 +529,15 @@ Effect.Fade = function(element) {
   element = $(element);
   var oldOpacity = element.getInlineOpacity();
   var options = Object.extend({
-  from: element.getOpacity() || 1.0,
-  to:   0.0,
-  afterFinishInternal: function(effect) { 
-    if(effect.options.to!=0) return;
-    effect.element.hide();
-    effect.element.setStyle({opacity: oldOpacity}); 
-  }}, arguments[1] || {});
+    from: element.getOpacity() || 1.0,
+    to:   0.0,
+    afterFinishInternal: function(effect) { 
+      if (effect.options.to!=0) return;
+      effect.element.hide().setStyle({opacity: oldOpacity}); 
+    }
+  }, arguments[1] || { });
   return new Effect.Opacity(element,options);
-}
+};
 
 Effect.Appear = function(element) {
   element = $(element);
@@ -565,69 +549,71 @@ Effect.Appear = function(element) {
     effect.element.forceRerendering();
   },
   beforeSetup: function(effect) {
-    effect.element.setOpacity(effect.options.from);
-    effect.element.show(); 
-  }}, arguments[1] || {});
+    effect.element.setOpacity(effect.options.from).show(); 
+  }}, arguments[1] || { });
   return new Effect.Opacity(element,options);
-}
+};
 
 Effect.Puff = function(element) {
   element = $(element);
-  var oldStyle = { opacity: element.getInlineOpacity(), position: element.getStyle('position') };
+  var oldStyle = { 
+    opacity: element.getInlineOpacity(), 
+    position: element.getStyle('position'),
+    top:  element.style.top,
+    left: element.style.left,
+    width: element.style.width,
+    height: element.style.height
+  };
   return new Effect.Parallel(
    [ new Effect.Scale(element, 200, 
       { sync: true, scaleFromCenter: true, scaleContent: true, restoreAfterFinish: true }), 
      new Effect.Opacity(element, { sync: true, to: 0.0 } ) ], 
      Object.extend({ duration: 1.0, 
       beforeSetupInternal: function(effect) {
-        effect.effects[0].element.setStyle({position: 'absolute'}); },
+        Position.absolutize(effect.effects[0].element)
+      },
       afterFinishInternal: function(effect) {
-         effect.effects[0].element.hide();
-         effect.effects[0].element.setStyle(oldStyle); }
-     }, arguments[1] || {})
+         effect.effects[0].element.hide().setStyle(oldStyle); }
+     }, arguments[1] || { })
    );
-}
+};
 
 Effect.BlindUp = function(element) {
   element = $(element);
   element.makeClipping();
-  return new Effect.Scale(element, 0, 
+  return new Effect.Scale(element, 0,
     Object.extend({ scaleContent: false, 
       scaleX: false, 
       restoreAfterFinish: true,
       afterFinishInternal: function(effect) {
-        effect.element.hide();
-        effect.element.undoClipping();
+        effect.element.hide().undoClipping();
       } 
-    }, arguments[1] || {})
+    }, arguments[1] || { })
   );
-}
+};
 
 Effect.BlindDown = function(element) {
   element = $(element);
   var elementDimensions = element.getDimensions();
-  return new Effect.Scale(element, 100, 
-    Object.extend({ scaleContent: false, 
-      scaleX: false,
-      scaleFrom: 0,
-      scaleMode: {originalHeight: elementDimensions.height, originalWidth: elementDimensions.width},
-      restoreAfterFinish: true,
-      afterSetup: function(effect) {
-        effect.element.makeClipping();
-        effect.element.setStyle({height: '0px'});
-        effect.element.show(); 
-      },  
-      afterFinishInternal: function(effect) {
-        effect.element.undoClipping();
-      }
-    }, arguments[1] || {})
-  );
-}
+  return new Effect.Scale(element, 100, Object.extend({ 
+    scaleContent: false, 
+    scaleX: false,
+    scaleFrom: 0,
+    scaleMode: {originalHeight: elementDimensions.height, originalWidth: elementDimensions.width},
+    restoreAfterFinish: true,
+    afterSetup: function(effect) {
+      effect.element.makeClipping().setStyle({height: '0px'}).show(); 
+    },  
+    afterFinishInternal: function(effect) {
+      effect.element.undoClipping();
+    }
+  }, arguments[1] || { }));
+};
 
 Effect.SwitchOff = function(element) {
   element = $(element);
   var oldOpacity = element.getInlineOpacity();
-  return new Effect.Appear(element, { 
+  return new Effect.Appear(element, Object.extend({
     duration: 0.4,
     from: 0,
     transition: Effect.Transitions.flicker,
@@ -636,19 +622,15 @@ Effect.SwitchOff = function(element) {
         duration: 0.3, scaleFromCenter: true,
         scaleX: false, scaleContent: false, restoreAfterFinish: true,
         beforeSetup: function(effect) { 
-          effect.element.makePositioned();
-          effect.element.makeClipping();
+          effect.element.makePositioned().makeClipping();
         },
         afterFinishInternal: function(effect) {
-          effect.element.hide();
-          effect.element.undoClipping();
-          effect.element.undoPositioned();
-          effect.element.setStyle({opacity: oldOpacity});
+          effect.element.hide().undoClipping().undoPositioned().setStyle({opacity: oldOpacity});
         }
       })
     }
-  });
-}
+  }, arguments[1] || { }));
+};
 
 Effect.DropOut = function(element) {
   element = $(element);
@@ -665,113 +647,107 @@ Effect.DropOut = function(element) {
           effect.effects[0].element.makePositioned(); 
         },
         afterFinishInternal: function(effect) {
-          effect.effects[0].element.hide();
-          effect.effects[0].element.undoPositioned();
-          effect.effects[0].element.setStyle(oldStyle);
+          effect.effects[0].element.hide().undoPositioned().setStyle(oldStyle);
         } 
-      }, arguments[1] || {}));
-}
+      }, arguments[1] || { }));
+};
 
 Effect.Shake = function(element) {
   element = $(element);
+  var options = Object.extend({
+    distance: 20,
+    duration: 0.5
+  }, arguments[1] || {});
+  var distance = parseFloat(options.distance);
+  var split = parseFloat(options.duration) / 10.0;
   var oldStyle = {
     top: element.getStyle('top'),
     left: element.getStyle('left') };
-    return new Effect.Move(element, 
-      { x:  20, y: 0, duration: 0.05, afterFinishInternal: function(effect) {
+    return new Effect.Move(element,
+      { x:  distance, y: 0, duration: split, afterFinishInternal: function(effect) {
     new Effect.Move(effect.element,
-      { x: -40, y: 0, duration: 0.1,  afterFinishInternal: function(effect) {
+      { x: -distance*2, y: 0, duration: split*2,  afterFinishInternal: function(effect) {
     new Effect.Move(effect.element,
-      { x:  40, y: 0, duration: 0.1,  afterFinishInternal: function(effect) {
+      { x:  distance*2, y: 0, duration: split*2,  afterFinishInternal: function(effect) {
     new Effect.Move(effect.element,
-      { x: -40, y: 0, duration: 0.1,  afterFinishInternal: function(effect) {
+      { x: -distance*2, y: 0, duration: split*2,  afterFinishInternal: function(effect) {
     new Effect.Move(effect.element,
-      { x:  40, y: 0, duration: 0.1,  afterFinishInternal: function(effect) {
+      { x:  distance*2, y: 0, duration: split*2,  afterFinishInternal: function(effect) {
     new Effect.Move(effect.element,
-      { x: -20, y: 0, duration: 0.05, afterFinishInternal: function(effect) {
-        effect.element.undoPositioned();
-        effect.element.setStyle(oldStyle);
+      { x: -distance, y: 0, duration: split, afterFinishInternal: function(effect) {
+        effect.element.undoPositioned().setStyle(oldStyle);
   }}) }}) }}) }}) }}) }});
-}
+};
 
 Effect.SlideDown = function(element) {
-  element = $(element);
-  element.cleanWhitespace();
+  element = $(element).cleanWhitespace();
   // SlideDown need to have the content of the element wrapped in a container element with fixed height!
-  var oldInnerBottom = $(element.firstChild).getStyle('bottom');
+  var oldInnerBottom = element.down().getStyle('bottom');
   var elementDimensions = element.getDimensions();
   return new Effect.Scale(element, 100, Object.extend({ 
     scaleContent: false, 
     scaleX: false, 
-    scaleFrom: 0,
+    scaleFrom: window.opera ? 0 : 1,
     scaleMode: {originalHeight: elementDimensions.height, originalWidth: elementDimensions.width},
     restoreAfterFinish: true,
     afterSetup: function(effect) {
       effect.element.makePositioned();
-      effect.element.firstChild.makePositioned();
-      if(window.opera) effect.element.setStyle({top: ''});
-      effect.element.makeClipping();
-      effect.element.setStyle({height: '0px'});
-      effect.element.show(); },
+      effect.element.down().makePositioned();
+      if (window.opera) effect.element.setStyle({top: ''});
+      effect.element.makeClipping().setStyle({height: '0px'}).show(); 
+    },
     afterUpdateInternal: function(effect) {
-      effect.element.firstChild.setStyle({bottom:
+      effect.element.down().setStyle({bottom:
         (effect.dims[0] - effect.element.clientHeight) + 'px' }); 
     },
     afterFinishInternal: function(effect) {
-      effect.element.undoClipping(); 
-      // IE will crash if child is undoPositioned first
-      if(/MSIE/.test(navigator.userAgent)){
-        effect.element.undoPositioned();
-        effect.element.firstChild.undoPositioned();
-      }else{
-        effect.element.firstChild.undoPositioned();
-        effect.element.undoPositioned();
-      }
-      effect.element.firstChild.setStyle({bottom: oldInnerBottom}); }
-    }, arguments[1] || {})
+      effect.element.undoClipping().undoPositioned();
+      effect.element.down().undoPositioned().setStyle({bottom: oldInnerBottom}); }
+    }, arguments[1] || { })
   );
-}
-  
+};
+
 Effect.SlideUp = function(element) {
-  element = $(element);
-  element.cleanWhitespace();
-  var oldInnerBottom = $(element.firstChild).getStyle('bottom');
-  return new Effect.Scale(element, 0, 
+  element = $(element).cleanWhitespace();
+  var oldInnerBottom = element.down().getStyle('bottom');
+  var elementDimensions = element.getDimensions();
+  return new Effect.Scale(element, window.opera ? 0 : 1,
    Object.extend({ scaleContent: false, 
     scaleX: false, 
     scaleMode: 'box',
     scaleFrom: 100,
+    scaleMode: {originalHeight: elementDimensions.height, originalWidth: elementDimensions.width},
     restoreAfterFinish: true,
-    beforeStartInternal: function(effect) {
+    afterSetup: function(effect) {
       effect.element.makePositioned();
-      effect.element.firstChild.makePositioned();
-      if(window.opera) effect.element.setStyle({top: ''});
-      effect.element.makeClipping();
-      effect.element.show(); },  
+      effect.element.down().makePositioned();
+      if (window.opera) effect.element.setStyle({top: ''});
+      effect.element.makeClipping().show();
+    },  
     afterUpdateInternal: function(effect) {
-      effect.element.firstChild.setStyle({bottom:
-        (effect.dims[0] - effect.element.clientHeight) + 'px' }); },
+      effect.element.down().setStyle({bottom:
+        (effect.dims[0] - effect.element.clientHeight) + 'px' });
+    },
     afterFinishInternal: function(effect) {
-      effect.element.hide();
-      effect.element.undoClipping();
-      effect.element.firstChild.undoPositioned();
-      effect.element.undoPositioned();
-      effect.element.setStyle({bottom: oldInnerBottom}); }
-   }, arguments[1] || {})
+      effect.element.hide().undoClipping().undoPositioned();
+      effect.element.down().undoPositioned().setStyle({bottom: oldInnerBottom});
+    }
+   }, arguments[1] || { })
   );
-}
+};
 
 // Bug in opera makes the TD containing this element expand for a instance after finish 
 Effect.Squish = function(element) {
-  return new Effect.Scale(element, window.opera ? 1 : 0, 
-    { restoreAfterFinish: true,
-      beforeSetup: function(effect) {
-        effect.element.makeClipping(effect.element); },  
-      afterFinishInternal: function(effect) {
-        effect.element.hide(effect.element); 
-        effect.element.undoClipping(effect.element); }
+  return new Effect.Scale(element, window.opera ? 1 : 0, { 
+    restoreAfterFinish: true,
+    beforeSetup: function(effect) {
+      effect.element.makeClipping(); 
+    },  
+    afterFinishInternal: function(effect) {
+      effect.element.hide().undoClipping(); 
+    }
   });
-}
+};
 
 Effect.Grow = function(element) {
   element = $(element);
@@ -780,7 +756,7 @@ Effect.Grow = function(element) {
     moveTransition: Effect.Transitions.sinoidal,
     scaleTransition: Effect.Transitions.sinoidal,
     opacityTransition: Effect.Transitions.full
-  }, arguments[1] || {});
+  }, arguments[1] || { });
   var oldStyle = {
     top: element.style.top,
     left: element.style.left,
@@ -825,9 +801,7 @@ Effect.Grow = function(element) {
     y: initialMoveY,
     duration: 0.01, 
     beforeSetup: function(effect) {
-      effect.element.hide();
-      effect.element.makeClipping();
-      effect.element.makePositioned();
+      effect.element.hide().makeClipping().makePositioned();
     },
     afterFinishInternal: function(effect) {
       new Effect.Parallel(
@@ -838,19 +812,16 @@ Effect.Grow = function(element) {
             sync: true, scaleFrom: window.opera ? 1 : 0, transition: options.scaleTransition, restoreAfterFinish: true})
         ], Object.extend({
              beforeSetup: function(effect) {
-               effect.effects[0].element.setStyle({height: '0px'});
-               effect.effects[0].element.show(); 
+               effect.effects[0].element.setStyle({height: '0px'}).show(); 
              },
              afterFinishInternal: function(effect) {
-               effect.effects[0].element.undoClipping();
-               effect.effects[0].element.undoPositioned();
-               effect.effects[0].element.setStyle(oldStyle); 
+               effect.effects[0].element.undoClipping().undoPositioned().setStyle(oldStyle); 
              }
            }, options)
       )
     }
   });
-}
+};
 
 Effect.Shrink = function(element) {
   element = $(element);
@@ -859,7 +830,7 @@ Effect.Shrink = function(element) {
     moveTransition: Effect.Transitions.sinoidal,
     scaleTransition: Effect.Transitions.sinoidal,
     opacityTransition: Effect.Transitions.none
-  }, arguments[1] || {});
+  }, arguments[1] || { });
   var oldStyle = {
     top: element.style.top,
     left: element.style.left,
@@ -898,29 +869,26 @@ Effect.Shrink = function(element) {
       new Effect.Move(element, { x: moveX, y: moveY, sync: true, transition: options.moveTransition })
     ], Object.extend({            
          beforeStartInternal: function(effect) {
-           effect.effects[0].element.makePositioned();
-           effect.effects[0].element.makeClipping(); },
+           effect.effects[0].element.makePositioned().makeClipping(); 
+         },
          afterFinishInternal: function(effect) {
-           effect.effects[0].element.hide();
-           effect.effects[0].element.undoClipping();
-           effect.effects[0].element.undoPositioned();
-           effect.effects[0].element.setStyle(oldStyle); }
+           effect.effects[0].element.hide().undoClipping().undoPositioned().setStyle(oldStyle); }
        }, options)
   );
-}
+};
 
 Effect.Pulsate = function(element) {
   element = $(element);
-  var options    = arguments[1] || {};
+  var options    = arguments[1] || { };
   var oldOpacity = element.getInlineOpacity();
   var transition = options.transition || Effect.Transitions.sinoidal;
-  var reverser   = function(pos){ return transition(1-Effect.Transitions.pulse(pos)) };
+  var reverser   = function(pos){ return transition(1-Effect.Transitions.pulse(pos, options.pulses)) };
   reverser.bind(transition);
   return new Effect.Opacity(element, 
-    Object.extend(Object.extend({  duration: 3.0, from: 0,
+    Object.extend(Object.extend({  duration: 2.0, from: 0,
       afterFinishInternal: function(effect) { effect.element.setStyle({opacity: oldOpacity}); }
     }, options), {transition: reverser}));
-}
+};
 
 Effect.Fold = function(element) {
   element = $(element);
@@ -929,7 +897,7 @@ Effect.Fold = function(element) {
     left: element.style.left,
     width: element.style.width,
     height: element.style.height };
-  Element.makeClipping(element);
+  element.makeClipping();
   return new Effect.Scale(element, 5, Object.extend({   
     scaleContent: false,
     scaleX: false,
@@ -938,16 +906,217 @@ Effect.Fold = function(element) {
       scaleContent: false, 
       scaleY: false,
       afterFinishInternal: function(effect) {
-        effect.element.hide();
-        effect.element.undoClipping(); 
-        effect.element.setStyle(oldStyle);
+        effect.element.hide().undoClipping().setStyle(oldStyle);
       } });
-  }}, arguments[1] || {}));
-}
-
-Element.Methods.visualEffect = function(element, effect, options) {
-  s = effect.gsub(/_/, '-').camelize();
-  effect_class = s.charAt(0).toUpperCase() + s.substring(1);
-  new Effect[effect_class](element, options);
-  return $(element);
-};
\ No newline at end of file
+  }}, arguments[1] || { }));
+};
+
+Effect.Morph = Class.create(Effect.Base, {
+  initialize: function(element) {
+    this.element = $(element);
+    if (!this.element) throw(Effect._elementDoesNotExistError);
+    var options = Object.extend({
+      style: { }
+    }, arguments[1] || { });
+    
+    if (!Object.isString(options.style)) this.style = $H(options.style);
+    else {
+      if (options.style.include(':'))
+        this.style = options.style.parseStyle();
+      else {
+        this.element.addClassName(options.style);
+        this.style = $H(this.element.getStyles());
+        this.element.removeClassName(options.style);
+        var css = this.element.getStyles();
+        this.style = this.style.reject(function(style) {
+          return style.value == css[style.key];
+        });
+        options.afterFinishInternal = function(effect) {
+          effect.element.addClassName(effect.options.style);
+          effect.transforms.each(function(transform) {
+            effect.element.style[transform.style] = '';
+          });
+        }
+      }
+    }
+    this.start(options);
+  },
+  
+  setup: function(){
+    function parseColor(color){
+      if (!color || ['rgba(0, 0, 0, 0)','transparent'].include(color)) color = '#ffffff';
+      color = color.parseColor();
+      return $R(0,2).map(function(i){
+        return parseInt( color.slice(i*2+1,i*2+3), 16 ) 
+      });
+    }
+    this.transforms = this.style.map(function(pair){
+      var property = pair[0], value = pair[1], unit = null;
+
+      if (value.parseColor('#zzzzzz') != '#zzzzzz') {
+        value = value.parseColor();
+        unit  = 'color';
+      } else if (property == 'opacity') {
+        value = parseFloat(value);
+        if (Prototype.Browser.IE && (!this.element.currentStyle.hasLayout))
+          this.element.setStyle({zoom: 1});
+      } else if (Element.CSS_LENGTH.test(value)) {
+          var components = value.match(/^([\+\-]?[0-9\.]+)(.*)$/);
+          value = parseFloat(components[1]);
+          unit = (components.length == 3) ? components[2] : null;
+      }
+
+      var originalValue = this.element.getStyle(property);
+      return { 
+        style: property.camelize(), 
+        originalValue: unit=='color' ? parseColor(originalValue) : parseFloat(originalValue || 0), 
+        targetValue: unit=='color' ? parseColor(value) : value,
+        unit: unit
+      };
+    }.bind(this)).reject(function(transform){
+      return (
+        (transform.originalValue == transform.targetValue) ||
+        (
+          transform.unit != 'color' &&
+          (isNaN(transform.originalValue) || isNaN(transform.targetValue))
+        )
+      )
+    });
+  },
+  update: function(position) {
+    var style = { }, transform, i = this.transforms.length;
+    while(i--)
+      style[(transform = this.transforms[i]).style] = 
+        transform.unit=='color' ? '#'+
+          (Math.round(transform.originalValue[0]+
+            (transform.targetValue[0]-transform.originalValue[0])*position)).toColorPart() +
+          (Math.round(transform.originalValue[1]+
+            (transform.targetValue[1]-transform.originalValue[1])*position)).toColorPart() +
+          (Math.round(transform.originalValue[2]+
+            (transform.targetValue[2]-transform.originalValue[2])*position)).toColorPart() :
+        (transform.originalValue +
+          (transform.targetValue - transform.originalValue) * position).toFixed(3) + 
+            (transform.unit === null ? '' : transform.unit);
+    this.element.setStyle(style, true);
+  }
+});
+
+Effect.Transform = Class.create({
+  initialize: function(tracks){
+    this.tracks  = [];
+    this.options = arguments[1] || { };
+    this.addTracks(tracks);
+  },
+  addTracks: function(tracks){
+    tracks.each(function(track){
+      track = $H(track);
+      var data = track.values().first();
+      this.tracks.push($H({
+        ids:     track.keys().first(),
+        effect:  Effect.Morph,
+        options: { style: data }
+      }));
+    }.bind(this));
+    return this;
+  },
+  play: function(){
+    return new Effect.Parallel(
+      this.tracks.map(function(track){
+        var ids = track.get('ids'), effect = track.get('effect'), options = track.get('options');
+        var elements = [$(ids) || $$(ids)].flatten();
+        return elements.map(function(e){ return new effect(e, Object.extend({ sync:true }, options)) });
+      }).flatten(),
+      this.options
+    );
+  }
+});
+
+Element.CSS_PROPERTIES = $w(
+  'backgroundColor backgroundPosition borderBottomColor borderBottomStyle ' + 
+  'borderBottomWidth borderLeftColor borderLeftStyle borderLeftWidth ' +
+  'borderRightColor borderRightStyle borderRightWidth borderSpacing ' +
+  'borderTopColor borderTopStyle borderTopWidth bottom clip color ' +
+  'fontSize fontWeight height left letterSpacing lineHeight ' +
+  'marginBottom marginLeft marginRight marginTop markerOffset maxHeight '+
+  'maxWidth minHeight minWidth opacity outlineColor outlineOffset ' +
+  'outlineWidth paddingBottom paddingLeft paddingRight paddingTop ' +
+  'right textIndent top width wordSpacing zIndex');
+  
+Element.CSS_LENGTH = /^(([\+\-]?[0-9\.]+)(em|ex|px|in|cm|mm|pt|pc|\%))|0$/;
+
+String.__parseStyleElement = document.createElement('div');
+String.prototype.parseStyle = function(){
+  var style, styleRules = $H();
+  if (Prototype.Browser.WebKit)
+    style = new Element('div',{style:this}).style;
+  else {
+    String.__parseStyleElement.innerHTML = '<div style="' + this + '"></div>';
+    style = String.__parseStyleElement.childNodes[0].style;
+  }
+  
+  Element.CSS_PROPERTIES.each(function(property){
+    if (style[property]) styleRules.set(property, style[property]); 
+  });
+  
+  if (Prototype.Browser.IE && this.include('opacity'))
+    styleRules.set('opacity', this.match(/opacity:\s*((?:0|1)?(?:\.\d*)?)/)[1]);
+
+  return styleRules;
+};
+
+if (document.defaultView && document.defaultView.getComputedStyle) {
+  Element.getStyles = function(element) {
+    var css = document.defaultView.getComputedStyle($(element), null);
+    return Element.CSS_PROPERTIES.inject({ }, function(styles, property) {
+      styles[property] = css[property];
+      return styles;
+    });
+  };
+} else {
+  Element.getStyles = function(element) {
+    element = $(element);
+    var css = element.currentStyle, styles;
+    styles = Element.CSS_PROPERTIES.inject({ }, function(results, property) {
+      results[property] = css[property];
+      return results;
+    });
+    if (!styles.opacity) styles.opacity = element.getOpacity();
+    return styles;
+  };
+};
+
+Effect.Methods = {
+  morph: function(element, style) {
+    element = $(element);
+    new Effect.Morph(element, Object.extend({ style: style }, arguments[2] || { }));
+    return element;
+  },
+  visualEffect: function(element, effect, options) {
+    element = $(element)
+    var s = effect.dasherize().camelize(), klass = s.charAt(0).toUpperCase() + s.substring(1);
+    new Effect[klass](element, options);
+    return element;
+  },
+  highlight: function(element, options) {
+    element = $(element);
+    new Effect.Highlight(element, options);
+    return element;
+  }
+};
+
+$w('fade appear grow shrink fold blindUp blindDown slideUp slideDown '+
+  'pulsate shake puff squish switchOff dropOut').each(
+  function(effect) { 
+    Effect.Methods[effect] = function(element, options){
+      element = $(element);
+      Effect[effect.charAt(0).toUpperCase() + effect.substring(1)](element, options);
+      return element;
+    }
+  }
+);
+
+$w('getInlineOpacity forceRerendering setContentZoom collectTextNodes collectTextNodesIgnoreClass getStyles').each( 
+  function(f) { Effect.Methods[f] = Element[f]; }
+);
+
+Element.addMethods(Effect.Methods);
diff --git a/usr/local/www/javascript/scriptaculous/prototype.js b/usr/local/www/javascript/scriptaculous/prototype.js
index 2d4ba34..8613914 100644
--- a/usr/local/www/javascript/scriptaculous/prototype.js
+++ b/usr/local/www/javascript/scriptaculous/prototype.js
@@ -1,98 +1,288 @@
-/*  Prototype JavaScript framework, version 1.5.0_pre1
- *  (c) 2005 Sam Stephenson <sam@conio.net>
+/*  Prototype JavaScript framework, version 1.6.0.1
+ *  (c) 2005-2007 Sam Stephenson
  *
  *  Prototype is freely distributable under the terms of an MIT-style license.
- *  For details, see the Prototype web site: http://prototype.conio.net/
+ *  For details, see the Prototype web site: http://www.prototypejs.org/
  *
-/*--------------------------------------------------------------------------*/
+ *--------------------------------------------------------------------------*/
 
 var Prototype = {
-  Version: '1.5.0_pre1',
-  ScriptFragment: '(?:<script.*?>)((\n|\r|.)*?)(?:<\/script>)',
+  Version: '1.6.0.1',
+
+  Browser: {
+    IE:     !!(window.attachEvent && !window.opera),
+    Opera:  !!window.opera,
+    WebKit: navigator.userAgent.indexOf('AppleWebKit/') > -1,
+    Gecko:  navigator.userAgent.indexOf('Gecko') > -1 && navigator.userAgent.indexOf('KHTML') == -1,
+    MobileSafari: !!navigator.userAgent.match(/Apple.*Mobile.*Safari/)
+  },
+
+  BrowserFeatures: {
+    XPath: !!document.evaluate,
+    ElementExtensions: !!window.HTMLElement,
+    SpecificElementExtensions:
+      document.createElement('div').__proto__ &&
+      document.createElement('div').__proto__ !==
+        document.createElement('form').__proto__
+  },
+
+  ScriptFragment: '<script[^>]*>([\\S\\s]*?)<\/script>',
+  JSONFilter: /^\/\*-secure-([\s\S]*)\*\/\s*$/,
+
+  emptyFunction: function() { },
+  K: function(x) { return x }
+};
+
+if (Prototype.Browser.MobileSafari)
+  Prototype.BrowserFeatures.SpecificElementExtensions = false;
 
-  emptyFunction: function() {},
-  K: function(x) {return x}
-}
 
+/* Based on Alex Arnell's inheritance implementation. */
 var Class = {
   create: function() {
-    return function() {
+    var parent = null, properties = $A(arguments);
+    if (Object.isFunction(properties[0]))
+      parent = properties.shift();
+
+    function klass() {
       this.initialize.apply(this, arguments);
     }
+
+    Object.extend(klass, Class.Methods);
+    klass.superclass = parent;
+    klass.subclasses = [];
+
+    if (parent) {
+      var subclass = function() { };
+      subclass.prototype = parent.prototype;
+      klass.prototype = new subclass;
+      parent.subclasses.push(klass);
+    }
+
+    for (var i = 0; i < properties.length; i++)
+      klass.addMethods(properties[i]);
+
+    if (!klass.prototype.initialize)
+      klass.prototype.initialize = Prototype.emptyFunction;
+
+    klass.prototype.constructor = klass;
+
+    return klass;
   }
-}
+};
+
+Class.Methods = {
+  addMethods: function(source) {
+    var ancestor   = this.superclass && this.superclass.prototype;
+    var properties = Object.keys(source);
+
+    if (!Object.keys({ toString: true }).length)
+      properties.push("toString", "valueOf");
+
+    for (var i = 0, length = properties.length; i < length; i++) {
+      var property = properties[i], value = source[property];
+      if (ancestor && Object.isFunction(value) &&
+          value.argumentNames().first() == "$super") {
+        var method = value, value = Object.extend((function(m) {
+          return function() { return ancestor[m].apply(this, arguments) };
+        })(property).wrap(method), {
+          valueOf:  function() { return method },
+          toString: function() { return method.toString() }
+        });
+      }
+      this.prototype[property] = value;
+    }
+
+    return this;
+  }
+};
 
-var Abstract = new Object();
+var Abstract = { };
 
 Object.extend = function(destination, source) {
-  for (property in source) {
+  for (var property in source)
     destination[property] = source[property];
-  }
   return destination;
-}
+};
 
-Object.inspect = function(object) {
-  try {
-    if (object == undefined) return 'undefined';
-    if (object == null) return 'null';
-    return object.inspect ? object.inspect() : object.toString();
-  } catch (e) {
-    if (e instanceof RangeError) return '...';
-    throw e;
-  }
-}
+Object.extend(Object, {
+  inspect: function(object) {
+    try {
+      if (Object.isUndefined(object)) return 'undefined';
+      if (object === null) return 'null';
+      return object.inspect ? object.inspect() : object.toString();
+    } catch (e) {
+      if (e instanceof RangeError) return '...';
+      throw e;
+    }
+  },
 
-Function.prototype.bind = function() {
-  var __method = this, args = $A(arguments), object = args.shift();
-  return function() {
-    return __method.apply(object, args.concat($A(arguments)));
-  }
-}
+  toJSON: function(object) {
+    var type = typeof object;
+    switch (type) {
+      case 'undefined':
+      case 'function':
+      case 'unknown': return;
+      case 'boolean': return object.toString();
+    }
+
+    if (object === null) return 'null';
+    if (object.toJSON) return object.toJSON();
+    if (Object.isElement(object)) return;
+
+    var results = [];
+    for (var property in object) {
+      var value = Object.toJSON(object[property]);
+      if (!Object.isUndefined(value))
+        results.push(property.toJSON() + ': ' + value);
+    }
+
+    return '{' + results.join(', ') + '}';
+  },
+
+  toQueryString: function(object) {
+    return $H(object).toQueryString();
+  },
+
+  toHTML: function(object) {
+    return object && object.toHTML ? object.toHTML() : String.interpret(object);
+  },
+
+  keys: function(object) {
+    var keys = [];
+    for (var property in object)
+      keys.push(property);
+    return keys;
+  },
+
+  values: function(object) {
+    var values = [];
+    for (var property in object)
+      values.push(object[property]);
+    return values;
+  },
+
+  clone: function(object) {
+    return Object.extend({ }, object);
+  },
+
+  isElement: function(object) {
+    return object && object.nodeType == 1;
+  },
+
+  isArray: function(object) {
+    return object && object.constructor === Array;
+  },
+
+  isHash: function(object) {
+    return object instanceof Hash;
+  },
+
+  isFunction: function(object) {
+    return typeof object == "function";
+  },
 
-Function.prototype.bindAsEventListener = function(object) {
-  var __method = this;
-  return function(event) {
-    return __method.call(object, event || window.event);
+  isString: function(object) {
+    return typeof object == "string";
+  },
+
+  isNumber: function(object) {
+    return typeof object == "number";
+  },
+
+  isUndefined: function(object) {
+    return typeof object == "undefined";
   }
-}
+});
 
-Object.extend(Number.prototype, {
-  toColorPart: function() {
-    var digits = this.toString(16);
-    if (this < 16) return '0' + digits;
-    return digits;
+Object.extend(Function.prototype, {
+  argumentNames: function() {
+    var names = this.toString().match(/^[\s\(]*function[^(]*\((.*?)\)/)[1].split(",").invoke("strip");
+    return names.length == 1 && !names[0] ? [] : names;
   },
 
-  succ: function() {
-    return this + 1;
+  bind: function() {
+    if (arguments.length < 2 && Object.isUndefined(arguments[0])) return this;
+    var __method = this, args = $A(arguments), object = args.shift();
+    return function() {
+      return __method.apply(object, args.concat($A(arguments)));
+    }
   },
 
-  times: function(iterator) {
-    $R(0, this, true).each(iterator);
-    return this;
+  bindAsEventListener: function() {
+    var __method = this, args = $A(arguments), object = args.shift();
+    return function(event) {
+      return __method.apply(object, [event || window.event].concat(args));
+    }
+  },
+
+  curry: function() {
+    if (!arguments.length) return this;
+    var __method = this, args = $A(arguments);
+    return function() {
+      return __method.apply(this, args.concat($A(arguments)));
+    }
+  },
+
+  delay: function() {
+    var __method = this, args = $A(arguments), timeout = args.shift() * 1000;
+    return window.setTimeout(function() {
+      return __method.apply(__method, args);
+    }, timeout);
+  },
+
+  wrap: function(wrapper) {
+    var __method = this;
+    return function() {
+      return wrapper.apply(this, [__method.bind(this)].concat($A(arguments)));
+    }
+  },
+
+  methodize: function() {
+    if (this._methodized) return this._methodized;
+    var __method = this;
+    return this._methodized = function() {
+      return __method.apply(null, [this].concat($A(arguments)));
+    };
   }
 });
 
+Function.prototype.defer = Function.prototype.delay.curry(0.01);
+
+Date.prototype.toJSON = function() {
+  return '"' + this.getUTCFullYear() + '-' +
+    (this.getUTCMonth() + 1).toPaddedString(2) + '-' +
+    this.getUTCDate().toPaddedString(2) + 'T' +
+    this.getUTCHours().toPaddedString(2) + ':' +
+    this.getUTCMinutes().toPaddedString(2) + ':' +
+    this.getUTCSeconds().toPaddedString(2) + 'Z"';
+};
+
 var Try = {
   these: function() {
     var returnValue;
 
-    for (var i = 0; i < arguments.length; i++) {
+    for (var i = 0, length = arguments.length; i < length; i++) {
       var lambda = arguments[i];
       try {
         returnValue = lambda();
         break;
-      } catch (e) {}
+      } catch (e) { }
     }
 
     return returnValue;
   }
-}
+};
+
+RegExp.prototype.match = RegExp.prototype.test;
+
+RegExp.escape = function(str) {
+  return String(str).replace(/([.*+?^=!:${}()|[\]\/\\])/g, '\\$1');
+};
 
 /*--------------------------------------------------------------------------*/
 
-var PeriodicalExecuter = Class.create();
-PeriodicalExecuter.prototype = {
+var PeriodicalExecuter = Class.create({
   initialize: function(callback, frequency) {
     this.callback = callback;
     this.frequency = frequency;
@@ -102,20 +292,44 @@ PeriodicalExecuter.prototype = {
   },
 
   registerCallback: function() {
-    setInterval(this.onTimerEvent.bind(this), this.frequency * 1000);
+    this.timer = setInterval(this.onTimerEvent.bind(this), this.frequency * 1000);
+  },
+
+  execute: function() {
+    this.callback(this);
+  },
+
+  stop: function() {
+    if (!this.timer) return;
+    clearInterval(this.timer);
+    this.timer = null;
   },
 
   onTimerEvent: function() {
     if (!this.currentlyExecuting) {
       try {
         this.currentlyExecuting = true;
-        this.callback();
+        this.execute();
       } finally {
         this.currentlyExecuting = false;
       }
     }
   }
-}
+});
+Object.extend(String, {
+  interpret: function(value) {
+    return value == null ? '' : String(value);
+  },
+  specialChar: {
+    '\b': '\\b',
+    '\t': '\\t',
+    '\n': '\\n',
+    '\f': '\\f',
+    '\r': '\\r',
+    '\\': '\\\\'
+  }
+});
+
 Object.extend(String.prototype, {
   gsub: function(pattern, replacement) {
     var result = '', source = this, match;
@@ -124,7 +338,7 @@ Object.extend(String.prototype, {
     while (source.length > 0) {
       if (match = source.match(pattern)) {
         result += source.slice(0, match.index);
-        result += (replacement(match) || '').toString();
+        result += String.interpret(replacement(match));
         source  = source.slice(match.index + match[0].length);
       } else {
         result += source, source = '';
@@ -135,7 +349,7 @@ Object.extend(String.prototype, {
 
   sub: function(pattern, replacement, count) {
     replacement = this.gsub.prepareReplacement(replacement);
-    count = count === undefined ? 1 : count;
+    count = Object.isUndefined(count) ? 1 : count;
 
     return this.gsub(pattern, function(match) {
       if (--count < 0) return match[0];
@@ -145,14 +359,14 @@ Object.extend(String.prototype, {
 
   scan: function(pattern, iterator) {
     this.gsub(pattern, iterator);
-    return this;
+    return String(this);
   },
 
   truncate: function(length, truncation) {
     length = length || 30;
-    truncation = truncation === undefined ? '...' : truncation;
+    truncation = Object.isUndefined(truncation) ? '...' : truncation;
     return this.length > length ?
-      this.slice(0, length - truncation.length) + truncation : this;
+      this.slice(0, length - truncation.length) + truncation : String(this);
   },
 
   strip: function() {
@@ -176,28 +390,40 @@ Object.extend(String.prototype, {
   },
 
   evalScripts: function() {
-    return this.extractScripts().map(eval);
+    return this.extractScripts().map(function(script) { return eval(script) });
   },
 
   escapeHTML: function() {
-    var div = document.createElement('div');
-    var text = document.createTextNode(this);
-    div.appendChild(text);
-    return div.innerHTML;
+    var self = arguments.callee;
+    self.text.data = this;
+    return self.div.innerHTML;
   },
 
   unescapeHTML: function() {
-    var div = document.createElement('div');
+    var div = new Element('div');
     div.innerHTML = this.stripTags();
-    return div.childNodes[0] ? div.childNodes[0].nodeValue : '';
+    return div.childNodes[0] ? (div.childNodes.length > 1 ?
+      $A(div.childNodes).inject('', function(memo, node) { return memo+node.nodeValue }) :
+      div.childNodes[0].nodeValue) : '';
   },
 
-  toQueryParams: function() {
-    var pairs = this.match(/^\??(.*)$/)[1].split('&');
-    return pairs.inject({}, function(params, pairString) {
-      var pair = pairString.split('=');
-      params[pair[0]] = pair[1];
-      return params;
+  toQueryParams: function(separator) {
+    var match = this.strip().match(/([^?#]*)(#.*)?$/);
+    if (!match) return { };
+
+    return match[1].split(separator || '&').inject({ }, function(hash, pair) {
+      if ((pair = pair.split('='))[0]) {
+        var key = decodeURIComponent(pair.shift());
+        var value = pair.length > 1 ? pair.join('=') : pair[0];
+        if (value != undefined) value = decodeURIComponent(value);
+
+        if (key in hash) {
+          if (!Object.isArray(hash[key])) hash[key] = [hash[key]];
+          hash[key].push(value);
+        }
+        else hash[key] = value;
+      }
+      return hash;
     });
   },
 
@@ -205,90 +431,204 @@ Object.extend(String.prototype, {
     return this.split('');
   },
 
+  succ: function() {
+    return this.slice(0, this.length - 1) +
+      String.fromCharCode(this.charCodeAt(this.length - 1) + 1);
+  },
+
+  times: function(count) {
+    return count < 1 ? '' : new Array(count + 1).join(this);
+  },
+
   camelize: function() {
-    var oStringList = this.split('-');
-    if (oStringList.length == 1) return oStringList[0];
+    var parts = this.split('-'), len = parts.length;
+    if (len == 1) return parts[0];
 
-    var camelizedString = this.indexOf('-') == 0
-      ? oStringList[0].charAt(0).toUpperCase() + oStringList[0].substring(1)
-      : oStringList[0];
+    var camelized = this.charAt(0) == '-'
+      ? parts[0].charAt(0).toUpperCase() + parts[0].substring(1)
+      : parts[0];
 
-    for (var i = 1, len = oStringList.length; i < len; i++) {
-      var s = oStringList[i];
-      camelizedString += s.charAt(0).toUpperCase() + s.substring(1);
-    }
+    for (var i = 1; i < len; i++)
+      camelized += parts[i].charAt(0).toUpperCase() + parts[i].substring(1);
 
-    return camelizedString;
+    return camelized;
   },
 
-  inspect: function() {
-    return "'" + this.replace(/\\/g, '\\\\').replace(/'/g, '\\\'') + "'";
+  capitalize: function() {
+    return this.charAt(0).toUpperCase() + this.substring(1).toLowerCase();
+  },
+
+  underscore: function() {
+    return this.gsub(/::/, '/').gsub(/([A-Z]+)([A-Z][a-z])/,'#{1}_#{2}').gsub(/([a-z\d])([A-Z])/,'#{1}_#{2}').gsub(/-/,'_').toLowerCase();
+  },
+
+  dasherize: function() {
+    return this.gsub(/_/,'-');
+  },
+
+  inspect: function(useDoubleQuotes) {
+    var escapedString = this.gsub(/[\x00-\x1f\\]/, function(match) {
+      var character = String.specialChar[match[0]];
+      return character ? character : '\\u00' + match[0].charCodeAt().toPaddedString(2, 16);
+    });
+    if (useDoubleQuotes) return '"' + escapedString.replace(/"/g, '\\"') + '"';
+    return "'" + escapedString.replace(/'/g, '\\\'') + "'";
+  },
+
+  toJSON: function() {
+    return this.inspect(true);
+  },
+
+  unfilterJSON: function(filter) {
+    return this.sub(filter || Prototype.JSONFilter, '#{1}');
+  },
+
+  isJSON: function() {
+    var str = this;
+    if (str.blank()) return false;
+    str = this.replace(/\\./g, '@').replace(/"[^"\\\n\r]*"/g, '');
+    return (/^[,:{}\[\]0-9.\-+Eaeflnr-u \n\r\t]*$/).test(str);
+  },
+
+  evalJSON: function(sanitize) {
+    var json = this.unfilterJSON();
+    try {
+      if (!sanitize || json.isJSON()) return eval('(' + json + ')');
+    } catch (e) { }
+    throw new SyntaxError('Badly formed JSON string: ' + this.inspect());
+  },
+
+  include: function(pattern) {
+    return this.indexOf(pattern) > -1;
+  },
+
+  startsWith: function(pattern) {
+    return this.indexOf(pattern) === 0;
+  },
+
+  endsWith: function(pattern) {
+    var d = this.length - pattern.length;
+    return d >= 0 && this.lastIndexOf(pattern) === d;
+  },
+
+  empty: function() {
+    return this == '';
+  },
+
+  blank: function() {
+    return /^\s*$/.test(this);
+  },
+
+  interpolate: function(object, pattern) {
+    return new Template(this, pattern).evaluate(object);
+  }
+});
+
+if (Prototype.Browser.WebKit || Prototype.Browser.IE) Object.extend(String.prototype, {
+  escapeHTML: function() {
+    return this.replace(/&/g,'&amp;').replace(/</g,'&lt;').replace(/>/g,'&gt;');
+  },
+  unescapeHTML: function() {
+    return this.replace(/&amp;/g,'&').replace(/&lt;/g,'<').replace(/&gt;/g,'>');
   }
 });
 
 String.prototype.gsub.prepareReplacement = function(replacement) {
-  if (typeof replacement == 'function') return replacement;
+  if (Object.isFunction(replacement)) return replacement;
   var template = new Template(replacement);
   return function(match) { return template.evaluate(match) };
-}
+};
 
 String.prototype.parseQuery = String.prototype.toQueryParams;
 
-var Template = Class.create();
-Template.Pattern = /(^|.|\r|\n)(#\{(.*?)\})/;
-Template.prototype = {
+Object.extend(String.prototype.escapeHTML, {
+  div:  document.createElement('div'),
+  text: document.createTextNode('')
+});
+
+with (String.prototype.escapeHTML) div.appendChild(text);
+
+var Template = Class.create({
   initialize: function(template, pattern) {
     this.template = template.toString();
-    this.pattern  = pattern || Template.Pattern;
+    this.pattern = pattern || Template.Pattern;
   },
 
   evaluate: function(object) {
+    if (Object.isFunction(object.toTemplateReplacements))
+      object = object.toTemplateReplacements();
+
     return this.template.gsub(this.pattern, function(match) {
-      var before = match[1];
+      if (object == null) return '';
+
+      var before = match[1] || '';
       if (before == '\\') return match[2];
-      return before + (object[match[3]] || '').toString();
-    });
+
+      var ctx = object, expr = match[3];
+      var pattern = /^([^.[]+|\[((?:.*?[^\\])?)\])(\.|\[|$)/;
+      match = pattern.exec(expr);
+      if (match == null) return before;
+
+      while (match != null) {
+        var comp = match[1].startsWith('[') ? match[2].gsub('\\\\]', ']') : match[1];
+        ctx = ctx[comp];
+        if (null == ctx || '' == match[3]) break;
+        expr = expr.substring('[' == match[3] ? match[1].length : match[0].length);
+        match = pattern.exec(expr);
+      }
+
+      return before + String.interpret(ctx);
+    }.bind(this));
   }
-}
+});
+Template.Pattern = /(^|.|\r|\n)(#\{(.*?)\})/;
 
-var $break    = new Object();
-var $continue = new Object();
+var $break = { };
 
 var Enumerable = {
-  each: function(iterator) {
+  each: function(iterator, context) {
     var index = 0;
+    iterator = iterator.bind(context);
     try {
       this._each(function(value) {
-        try {
-          iterator(value, index++);
-        } catch (e) {
-          if (e != $continue) throw e;
-        }
+        iterator(value, index++);
       });
     } catch (e) {
       if (e != $break) throw e;
     }
+    return this;
   },
 
-  all: function(iterator) {
+  eachSlice: function(number, iterator, context) {
+    iterator = iterator ? iterator.bind(context) : Prototype.K;
+    var index = -number, slices = [], array = this.toArray();
+    while ((index += number) < array.length)
+      slices.push(array.slice(index, index+number));
+    return slices.collect(iterator, context);
+  },
+
+  all: function(iterator, context) {
+    iterator = iterator ? iterator.bind(context) : Prototype.K;
     var result = true;
     this.each(function(value, index) {
-      result = result && !!(iterator || Prototype.K)(value, index);
+      result = result && !!iterator(value, index);
       if (!result) throw $break;
     });
     return result;
   },
 
-  any: function(iterator) {
-    var result = true;
+  any: function(iterator, context) {
+    iterator = iterator ? iterator.bind(context) : Prototype.K;
+    var result = false;
     this.each(function(value, index) {
-      if (result = !!(iterator || Prototype.K)(value, index))
+      if (result = !!iterator(value, index))
         throw $break;
     });
     return result;
   },
 
-  collect: function(iterator) {
+  collect: function(iterator, context) {
+    iterator = iterator ? iterator.bind(context) : Prototype.K;
     var results = [];
     this.each(function(value, index) {
       results.push(iterator(value, index));
@@ -296,7 +636,8 @@ var Enumerable = {
     return results;
   },
 
-  detect: function (iterator) {
+  detect: function(iterator, context) {
+    iterator = iterator.bind(context);
     var result;
     this.each(function(value, index) {
       if (iterator(value, index)) {
@@ -307,7 +648,8 @@ var Enumerable = {
     return result;
   },
 
-  findAll: function(iterator) {
+  findAll: function(iterator, context) {
+    iterator = iterator.bind(context);
     var results = [];
     this.each(function(value, index) {
       if (iterator(value, index))
@@ -316,17 +658,24 @@ var Enumerable = {
     return results;
   },
 
-  grep: function(pattern, iterator) {
+  grep: function(filter, iterator, context) {
+    iterator = iterator ? iterator.bind(context) : Prototype.K;
     var results = [];
+
+    if (Object.isString(filter))
+      filter = new RegExp(filter);
+
     this.each(function(value, index) {
-      var stringValue = value.toString();
-      if (stringValue.match(pattern))
-        results.push((iterator || Prototype.K)(value, index));
-    })
+      if (filter.match(value))
+        results.push(iterator(value, index));
+    });
     return results;
   },
 
   include: function(object) {
+    if (Object.isFunction(this.indexOf))
+      if (this.indexOf(object) != -1) return true;
+
     var found = false;
     this.each(function(value) {
       if (value == object) {
@@ -337,7 +686,16 @@ var Enumerable = {
     return found;
   },
 
-  inject: function(memo, iterator) {
+  inGroupsOf: function(number, fillWith) {
+    fillWith = Object.isUndefined(fillWith) ? null : fillWith;
+    return this.eachSlice(number, function(slice) {
+      while(slice.length < number) slice.push(fillWith);
+      return slice;
+    });
+  },
+
+  inject: function(memo, iterator, context) {
+    iterator = iterator.bind(context);
     this.each(function(value, index) {
       memo = iterator(memo, value, index);
     });
@@ -346,35 +704,38 @@ var Enumerable = {
 
   invoke: function(method) {
     var args = $A(arguments).slice(1);
-    return this.collect(function(value) {
+    return this.map(function(value) {
       return value[method].apply(value, args);
     });
   },
 
-  max: function(iterator) {
+  max: function(iterator, context) {
+    iterator = iterator ? iterator.bind(context) : Prototype.K;
     var result;
     this.each(function(value, index) {
-      value = (iterator || Prototype.K)(value, index);
-      if (value >= (result || value))
+      value = iterator(value, index);
+      if (result == null || value >= result)
         result = value;
     });
     return result;
   },
 
-  min: function(iterator) {
+  min: function(iterator, context) {
+    iterator = iterator ? iterator.bind(context) : Prototype.K;
     var result;
     this.each(function(value, index) {
-      value = (iterator || Prototype.K)(value, index);
-      if (value <= (result || value))
+      value = iterator(value, index);
+      if (result == null || value < result)
         result = value;
     });
     return result;
   },
 
-  partition: function(iterator) {
+  partition: function(iterator, context) {
+    iterator = iterator ? iterator.bind(context) : Prototype.K;
     var trues = [], falses = [];
     this.each(function(value, index) {
-      ((iterator || Prototype.K)(value, index) ?
+      (iterator(value, index) ?
         trues : falses).push(value);
     });
     return [trues, falses];
@@ -382,13 +743,14 @@ var Enumerable = {
 
   pluck: function(property) {
     var results = [];
-    this.each(function(value, index) {
+    this.each(function(value) {
       results.push(value[property]);
     });
     return results;
   },
 
-  reject: function(iterator) {
+  reject: function(iterator, context) {
+    iterator = iterator.bind(context);
     var results = [];
     this.each(function(value, index) {
       if (!iterator(value, index))
@@ -397,8 +759,9 @@ var Enumerable = {
     return results;
   },
 
-  sortBy: function(iterator) {
-    return this.collect(function(value, index) {
+  sortBy: function(iterator, context) {
+    iterator = iterator.bind(context);
+    return this.map(function(value, index) {
       return {value: value, criteria: iterator(value, index)};
     }).sort(function(left, right) {
       var a = left.criteria, b = right.criteria;
@@ -407,12 +770,12 @@ var Enumerable = {
   },
 
   toArray: function() {
-    return this.collect(Prototype.K);
+    return this.map();
   },
 
   zip: function() {
     var iterator = Prototype.K, args = $A(arguments);
-    if (typeof args.last() == 'function')
+    if (Object.isFunction(args.last()))
       iterator = args.pop();
 
     var collections = [this].concat(args).map($A);
@@ -421,37 +784,53 @@ var Enumerable = {
     });
   },
 
+  size: function() {
+    return this.toArray().length;
+  },
+
   inspect: function() {
     return '#<Enumerable:' + this.toArray().inspect() + '>';
   }
-}
+};
 
 Object.extend(Enumerable, {
   map:     Enumerable.collect,
   find:    Enumerable.detect,
   select:  Enumerable.findAll,
+  filter:  Enumerable.findAll,
   member:  Enumerable.include,
-  entries: Enumerable.toArray
+  entries: Enumerable.toArray,
+  every:   Enumerable.all,
+  some:    Enumerable.any
 });
-var $A = Array.from = function(iterable) {
+function $A(iterable) {
   if (!iterable) return [];
-  if (iterable.toArray) {
-    return iterable.toArray();
-  } else {
-    var results = [];
-    for (var i = 0; i < iterable.length; i++)
-      results.push(iterable[i]);
+  if (iterable.toArray) return iterable.toArray();
+  var length = iterable.length || 0, results = new Array(length);
+  while (length--) results[length] = iterable[length];
+  return results;
+}
+
+if (Prototype.Browser.WebKit) {
+  function $A(iterable) {
+    if (!iterable) return [];
+    if (!(Object.isFunction(iterable) && iterable == '[object NodeList]') &&
+        iterable.toArray) return iterable.toArray();
+    var length = iterable.length || 0, results = new Array(length);
+    while (length--) results[length] = iterable[length];
     return results;
   }
 }
 
+Array.from = $A;
+
 Object.extend(Array.prototype, Enumerable);
 
-Array.prototype._reverse = Array.prototype.reverse;
+if (!Array.prototype._reverse) Array.prototype._reverse = Array.prototype.reverse;
 
 Object.extend(Array.prototype, {
   _each: function(iterator) {
-    for (var i = 0; i < this.length; i++)
+    for (var i = 0, length = this.length; i < length; i++)
       iterator(this[i]);
   },
 
@@ -470,13 +849,13 @@ Object.extend(Array.prototype, {
 
   compact: function() {
     return this.select(function(value) {
-      return value != undefined || value != null;
+      return value != null;
     });
   },
 
   flatten: function() {
     return this.inject([], function(array, value) {
-      return array.concat(value.constructor == Array ?
+      return array.concat(Object.isArray(value) ?
         value.flatten() : [value]);
     });
   },
@@ -488,78 +867,219 @@ Object.extend(Array.prototype, {
     });
   },
 
-  indexOf: function(object) {
-    for (var i = 0; i < this.length; i++)
-      if (this[i] == object) return i;
-    return -1;
-  },
-
   reverse: function(inline) {
     return (inline !== false ? this : this.toArray())._reverse();
   },
 
-  shift: function() {
-    var result = this[0];
-    for (var i = 0; i < this.length - 1; i++)
-      this[i] = this[i + 1];
-    this.length--;
-    return result;
+  reduce: function() {
+    return this.length > 1 ? this : this[0];
+  },
+
+  uniq: function(sorted) {
+    return this.inject([], function(array, value, index) {
+      if (0 == index || (sorted ? array.last() != value : !array.include(value)))
+        array.push(value);
+      return array;
+    });
+  },
+
+  intersect: function(array) {
+    return this.uniq().findAll(function(item) {
+      return array.detect(function(value) { return item === value });
+    });
+  },
+
+  clone: function() {
+    return [].concat(this);
+  },
+
+  size: function() {
+    return this.length;
   },
 
   inspect: function() {
     return '[' + this.map(Object.inspect).join(', ') + ']';
+  },
+
+  toJSON: function() {
+    var results = [];
+    this.each(function(object) {
+      var value = Object.toJSON(object);
+      if (!Object.isUndefined(value)) results.push(value);
+    });
+    return '[' + results.join(', ') + ']';
   }
 });
-var Hash = {
-  _each: function(iterator) {
-    for (key in this) {
-      var value = this[key];
-      if (typeof value == 'function') continue;
 
-      var pair = [key, value];
-      pair.key = key;
-      pair.value = value;
-      iterator(pair);
-    }
-  },
+// use native browser JS 1.6 implementation if available
+if (Object.isFunction(Array.prototype.forEach))
+  Array.prototype._each = Array.prototype.forEach;
+
+if (!Array.prototype.indexOf) Array.prototype.indexOf = function(item, i) {
+  i || (i = 0);
+  var length = this.length;
+  if (i < 0) i = length + i;
+  for (; i < length; i++)
+    if (this[i] === item) return i;
+  return -1;
+};
+
+if (!Array.prototype.lastIndexOf) Array.prototype.lastIndexOf = function(item, i) {
+  i = isNaN(i) ? this.length : (i < 0 ? this.length + i : i) + 1;
+  var n = this.slice(0, i).reverse().indexOf(item);
+  return (n < 0) ? n : i - n - 1;
+};
 
-  keys: function() {
-    return this.pluck('key');
+Array.prototype.toArray = Array.prototype.clone;
+
+function $w(string) {
+  if (!Object.isString(string)) return [];
+  string = string.strip();
+  return string ? string.split(/\s+/) : [];
+}
+
+if (Prototype.Browser.Opera){
+  Array.prototype.concat = function() {
+    var array = [];
+    for (var i = 0, length = this.length; i < length; i++) array.push(this[i]);
+    for (var i = 0, length = arguments.length; i < length; i++) {
+      if (Object.isArray(arguments[i])) {
+        for (var j = 0, arrayLength = arguments[i].length; j < arrayLength; j++)
+          array.push(arguments[i][j]);
+      } else {
+        array.push(arguments[i]);
+      }
+    }
+    return array;
+  };
+}
+Object.extend(Number.prototype, {
+  toColorPart: function() {
+    return this.toPaddedString(2, 16);
   },
 
-  values: function() {
-    return this.pluck('value');
+  succ: function() {
+    return this + 1;
   },
 
-  merge: function(hash) {
-    return $H(hash).inject($H(this), function(mergedHash, pair) {
-      mergedHash[pair.key] = pair.value;
-      return mergedHash;
-    });
+  times: function(iterator) {
+    $R(0, this, true).each(iterator);
+    return this;
   },
 
-  toQueryString: function() {
-    return this.map(function(pair) {
-      return pair.map(encodeURIComponent).join('=');
-    }).join('&');
+  toPaddedString: function(length, radix) {
+    var string = this.toString(radix || 10);
+    return '0'.times(length - string.length) + string;
   },
 
-  inspect: function() {
-    return '#<Hash:{' + this.map(function(pair) {
-      return pair.map(Object.inspect).join(': ');
-    }).join(', ') + '}>';
+  toJSON: function() {
+    return isFinite(this) ? this.toString() : 'null';
   }
-}
+});
 
+$w('abs round ceil floor').each(function(method){
+  Number.prototype[method] = Math[method].methodize();
+});
 function $H(object) {
-  var hash = Object.extend({}, object || {});
-  Object.extend(hash, Enumerable);
-  Object.extend(hash, Hash);
-  return hash;
-}
-ObjectRange = Class.create();
-Object.extend(ObjectRange.prototype, Enumerable);
-Object.extend(ObjectRange.prototype, {
+  return new Hash(object);
+};
+
+var Hash = Class.create(Enumerable, (function() {
+
+  function toQueryPair(key, value) {
+    if (Object.isUndefined(value)) return key;
+    return key + '=' + encodeURIComponent(String.interpret(value));
+  }
+
+  return {
+    initialize: function(object) {
+      this._object = Object.isHash(object) ? object.toObject() : Object.clone(object);
+    },
+
+    _each: function(iterator) {
+      for (var key in this._object) {
+        var value = this._object[key], pair = [key, value];
+        pair.key = key;
+        pair.value = value;
+        iterator(pair);
+      }
+    },
+
+    set: function(key, value) {
+      return this._object[key] = value;
+    },
+
+    get: function(key) {
+      return this._object[key];
+    },
+
+    unset: function(key) {
+      var value = this._object[key];
+      delete this._object[key];
+      return value;
+    },
+
+    toObject: function() {
+      return Object.clone(this._object);
+    },
+
+    keys: function() {
+      return this.pluck('key');
+    },
+
+    values: function() {
+      return this.pluck('value');
+    },
+
+    index: function(value) {
+      var match = this.detect(function(pair) {
+        return pair.value === value;
+      });
+      return match && match.key;
+    },
+
+    merge: function(object) {
+      return this.clone().update(object);
+    },
+
+    update: function(object) {
+      return new Hash(object).inject(this, function(result, pair) {
+        result.set(pair.key, pair.value);
+        return result;
+      });
+    },
+
+    toQueryString: function() {
+      return this.map(function(pair) {
+        var key = encodeURIComponent(pair.key), values = pair.value;
+
+        if (values && typeof values == 'object') {
+          if (Object.isArray(values))
+            return values.map(toQueryPair.curry(key)).join('&');
+        }
+        return toQueryPair(key, values);
+      }).join('&');
+    },
+
+    inspect: function() {
+      return '#<Hash:{' + this.map(function(pair) {
+        return pair.map(Object.inspect).join(': ');
+      }).join(', ') + '}>';
+    },
+
+    toJSON: function() {
+      return Object.toJSON(this.toObject());
+    },
+
+    clone: function() {
+      return new Hash(this);
+    }
+  }
+})());
+
+Hash.prototype.toTemplateReplacements = Hash.prototype.toObject;
+Hash.from = $H;
+var ObjectRange = Class.create(Enumerable, {
   initialize: function(start, end, exclusive) {
     this.start = start;
     this.end = end;
@@ -568,10 +1088,10 @@ Object.extend(ObjectRange.prototype, {
 
   _each: function(iterator) {
     var value = this.start;
-    do {
+    while (this.include(value)) {
       iterator(value);
       value = value.succ();
-    } while (this.include(value));
+    }
   },
 
   include: function(value) {
@@ -585,19 +1105,19 @@ Object.extend(ObjectRange.prototype, {
 
 var $R = function(start, end, exclusive) {
   return new ObjectRange(start, end, exclusive);
-}
+};
 
 var Ajax = {
   getTransport: function() {
     return Try.these(
+      function() {return new XMLHttpRequest()},
       function() {return new ActiveXObject('Msxml2.XMLHTTP')},
-      function() {return new ActiveXObject('Microsoft.XMLHTTP')},
-      function() {return new XMLHttpRequest()}
+      function() {return new ActiveXObject('Microsoft.XMLHTTP')}
     ) || false;
   },
 
   activeRequestCount: 0
-}
+};
 
 Ajax.Responders = {
   responders: [],
@@ -606,21 +1126,21 @@ Ajax.Responders = {
     this.responders._each(iterator);
   },
 
-  register: function(responderToAdd) {
-    if (!this.include(responderToAdd))
-      this.responders.push(responderToAdd);
+  register: function(responder) {
+    if (!this.include(responder))
+      this.responders.push(responder);
   },
 
-  unregister: function(responderToRemove) {
-    this.responders = this.responders.without(responderToRemove);
+  unregister: function(responder) {
+    this.responders = this.responders.without(responder);
   },
 
   dispatch: function(callback, request, transport, json) {
     this.each(function(responder) {
-      if (responder[callback] && typeof responder[callback] == 'function') {
+      if (Object.isFunction(responder[callback])) {
         try {
           responder[callback].apply(responder, [request, transport, json]);
-        } catch (e) {}
+        } catch (e) { }
       }
     });
   }
@@ -629,155 +1149,185 @@ Ajax.Responders = {
 Object.extend(Ajax.Responders, Enumerable);
 
 Ajax.Responders.register({
-  onCreate: function() {
-    Ajax.activeRequestCount++;
-  },
-
-  onComplete: function() {
-    Ajax.activeRequestCount--;
-  }
+  onCreate:   function() { Ajax.activeRequestCount++ },
+  onComplete: function() { Ajax.activeRequestCount-- }
 });
 
-Ajax.Base = function() {};
-Ajax.Base.prototype = {
-  setOptions: function(options) {
+Ajax.Base = Class.create({
+  initialize: function(options) {
     this.options = {
       method:       'post',
       asynchronous: true,
-      parameters:   ''
-    }
-    Object.extend(this.options, options || {});
-  },
-
-  responseIsSuccess: function() {
-    return this.transport.status == undefined
-        || this.transport.status == 0
-        || (this.transport.status >= 200 && this.transport.status < 300);
-  },
-
-  responseIsFailure: function() {
-    return !this.responseIsSuccess();
+      contentType:  'application/x-www-form-urlencoded',
+      encoding:     'UTF-8',
+      parameters:   '',
+      evalJSON:     true,
+      evalJS:       true
+    };
+    Object.extend(this.options, options || { });
+
+    this.options.method = this.options.method.toLowerCase();
+
+    if (Object.isString(this.options.parameters))
+      this.options.parameters = this.options.parameters.toQueryParams();
+    else if (Object.isHash(this.options.parameters))
+      this.options.parameters = this.options.parameters.toObject();
   }
-}
+});
 
-Ajax.Request = Class.create();
-Ajax.Request.Events =
-  ['Uninitialized', 'Loading', 'Loaded', 'Interactive', 'Complete'];
+Ajax.Request = Class.create(Ajax.Base, {
+  _complete: false,
 
-Ajax.Request.prototype = Object.extend(new Ajax.Base(), {
-  initialize: function(url, options) {
+  initialize: function($super, url, options) {
+    $super(options);
     this.transport = Ajax.getTransport();
-    this.setOptions(options);
     this.request(url);
   },
 
   request: function(url) {
-    var parameters = this.options.parameters || '';
-    if (parameters.length > 0) parameters += '&_=';
+    this.url = url;
+    this.method = this.options.method;
+    var params = Object.clone(this.options.parameters);
 
-    try {
-      this.url = url;
-      if (this.options.method == 'get' && parameters.length > 0)
-        this.url += (this.url.match(/\?/) ? '&' : '?') + parameters;
+    if (!['get', 'post'].include(this.method)) {
+      // simulate other verbs over post
+      params['_method'] = this.method;
+      this.method = 'post';
+    }
 
-      Ajax.Responders.dispatch('onCreate', this, this.transport);
+    this.parameters = params;
 
-      this.transport.open(this.options.method, this.url,
+    if (params = Object.toQueryString(params)) {
+      // when GET, append parameters to URL
+      if (this.method == 'get')
+        this.url += (this.url.include('?') ? '&' : '?') + params;
+      else if (/Konqueror|Safari|KHTML/.test(navigator.userAgent))
+        params += '&_=';
+    }
+
+    try {
+      var response = new Ajax.Response(this);
+      if (this.options.onCreate) this.options.onCreate(response);
+      Ajax.Responders.dispatch('onCreate', this, response);
+
+      this.transport.open(this.method.toUpperCase(), this.url,
         this.options.asynchronous);
 
-      if (this.options.asynchronous) {
-        this.transport.onreadystatechange = this.onStateChange.bind(this);
-        setTimeout((function() {this.respondToReadyState(1)}).bind(this), 10);
-      }
+      if (this.options.asynchronous) this.respondToReadyState.bind(this).defer(1);
 
+      this.transport.onreadystatechange = this.onStateChange.bind(this);
       this.setRequestHeaders();
 
-      var body = this.options.postBody ? this.options.postBody : parameters;
-      this.transport.send(this.options.method == 'post' ? body : null);
+      this.body = this.method == 'post' ? (this.options.postBody || params) : null;
+      this.transport.send(this.body);
 
-    } catch (e) {
+      /* Force Firefox to handle ready state 4 for synchronous requests */
+      if (!this.options.asynchronous && this.transport.overrideMimeType)
+        this.onStateChange();
+
+    }
+    catch (e) {
       this.dispatchException(e);
     }
   },
 
+  onStateChange: function() {
+    var readyState = this.transport.readyState;
+    if (readyState > 1 && !((readyState == 4) && this._complete))
+      this.respondToReadyState(this.transport.readyState);
+  },
+
   setRequestHeaders: function() {
-    var requestHeaders =
-      ['X-Requested-With', 'XMLHttpRequest',
-       'X-Prototype-Version', Prototype.Version,
-       'Accept', 'text/javascript, text/html, application/xml, text/xml, */*'];
-
-    if (this.options.method == 'post') {
-      requestHeaders.push('Content-type',
-        'application/x-www-form-urlencoded');
-
-      /* Force "Connection: close" for Mozilla browsers to work around
-       * a bug where XMLHttpReqeuest sends an incorrect Content-length
-       * header. See Mozilla Bugzilla #246651.
+    var headers = {
+      'X-Requested-With': 'XMLHttpRequest',
+      'X-Prototype-Version': Prototype.Version,
+      'Accept': 'text/javascript, text/html, application/xml, text/xml, */*'
+    };
+
+    if (this.method == 'post') {
+      headers['Content-type'] = this.options.contentType +
+        (this.options.encoding ? '; charset=' + this.options.encoding : '');
+
+      /* Force "Connection: close" for older Mozilla browsers to work
+       * around a bug where XMLHttpRequest sends an incorrect
+       * Content-length header. See Mozilla Bugzilla #246651.
        */
-      if (this.transport.overrideMimeType)
-        requestHeaders.push('Connection', 'close');
+      if (this.transport.overrideMimeType &&
+          (navigator.userAgent.match(/Gecko\/(\d{4})/) || [0,2005])[1] < 2005)
+            headers['Connection'] = 'close';
     }
 
-    if (this.options.requestHeaders)
-      requestHeaders.push.apply(requestHeaders, this.options.requestHeaders);
+    // user-defined headers
+    if (typeof this.options.requestHeaders == 'object') {
+      var extras = this.options.requestHeaders;
 
-    for (var i = 0; i < requestHeaders.length; i += 2)
-      this.transport.setRequestHeader(requestHeaders[i], requestHeaders[i+1]);
-  },
+      if (Object.isFunction(extras.push))
+        for (var i = 0, length = extras.length; i < length; i += 2)
+          headers[extras[i]] = extras[i+1];
+      else
+        $H(extras).each(function(pair) { headers[pair.key] = pair.value });
+    }
 
-  onStateChange: function() {
-    var readyState = this.transport.readyState;
-    if (readyState != 1)
-      this.respondToReadyState(this.transport.readyState);
+    for (var name in headers)
+      this.transport.setRequestHeader(name, headers[name]);
   },
 
-  header: function(name) {
-    try {
-      return this.transport.getResponseHeader(name);
-    } catch (e) {}
+  success: function() {
+    var status = this.getStatus();
+    return !status || (status >= 200 && status < 300);
   },
 
-  evalJSON: function() {
+  getStatus: function() {
     try {
-      return eval(this.header('X-JSON'));
-    } catch (e) {}
-  },
-
-  evalResponse: function() {
-    try {
-      return eval(this.transport.responseText);
-    } catch (e) {
-      this.dispatchException(e);
-    }
+      return this.transport.status || 0;
+    } catch (e) { return 0 }
   },
 
   respondToReadyState: function(readyState) {
-    var event = Ajax.Request.Events[readyState];
-    var transport = this.transport, json = this.evalJSON();
+    var state = Ajax.Request.Events[readyState], response = new Ajax.Response(this);
 
-    if (event == 'Complete') {
+    if (state == 'Complete') {
       try {
-        (this.options['on' + this.transport.status]
-         || this.options['on' + (this.responseIsSuccess() ? 'Success' : 'Failure')]
-         || Prototype.emptyFunction)(transport, json);
+        this._complete = true;
+        (this.options['on' + response.status]
+         || this.options['on' + (this.success() ? 'Success' : 'Failure')]
+         || Prototype.emptyFunction)(response, response.headerJSON);
       } catch (e) {
         this.dispatchException(e);
       }
 
-      if ((this.header('Content-type') || '').match(/^text\/javascript/i))
+      var contentType = response.getHeader('Content-type');
+      if (this.options.evalJS == 'force'
+          || (this.options.evalJS && contentType
+          && contentType.match(/^\s*(text|application)\/(x-)?(java|ecma)script(;.*)?\s*$/i)))
         this.evalResponse();
     }
 
     try {
-      (this.options['on' + event] || Prototype.emptyFunction)(transport, json);
-      Ajax.Responders.dispatch('on' + event, this, transport, json);
+      (this.options['on' + state] || Prototype.emptyFunction)(response, response.headerJSON);
+      Ajax.Responders.dispatch('on' + state, this, response, response.headerJSON);
     } catch (e) {
       this.dispatchException(e);
     }
 
-    /* Avoid memory leak in MSIE: clean up the oncomplete event handler */
-    if (event == 'Complete')
+    if (state == 'Complete') {
+      // avoid memory leak in MSIE: clean up
       this.transport.onreadystatechange = Prototype.emptyFunction;
+    }
+  },
+
+  getHeader: function(name) {
+    try {
+      return this.transport.getResponseHeader(name) || null;
+    } catch (e) { return null }
+  },
+
+  evalResponse: function() {
+    try {
+      return eval((this.transport.responseText || '').unfilterJSON());
+    } catch (e) {
+      this.dispatchException(e);
+    }
   },
 
   dispatchException: function(exception) {
@@ -786,61 +1336,126 @@ Ajax.Request.prototype = Object.extend(new Ajax.Base(), {
   }
 });
 
-Ajax.Updater = Class.create();
+Ajax.Request.Events =
+  ['Uninitialized', 'Loading', 'Loaded', 'Interactive', 'Complete'];
 
-Object.extend(Object.extend(Ajax.Updater.prototype, Ajax.Request.prototype), {
-  initialize: function(container, url, options) {
-    this.containers = {
-      success: container.success ? $(container.success) : $(container),
-      failure: container.failure ? $(container.failure) :
-        (container.success ? null : $(container))
+Ajax.Response = Class.create({
+  initialize: function(request){
+    this.request = request;
+    var transport  = this.transport  = request.transport,
+        readyState = this.readyState = transport.readyState;
+
+    if((readyState > 2 && !Prototype.Browser.IE) || readyState == 4) {
+      this.status       = this.getStatus();
+      this.statusText   = this.getStatusText();
+      this.responseText = String.interpret(transport.responseText);
+      this.headerJSON   = this._getHeaderJSON();
     }
 
-    this.transport = Ajax.getTransport();
-    this.setOptions(options);
+    if(readyState == 4) {
+      var xml = transport.responseXML;
+      this.responseXML  = Object.isUndefined(xml) ? null : xml;
+      this.responseJSON = this._getResponseJSON();
+    }
+  },
 
-    var onComplete = this.options.onComplete || Prototype.emptyFunction;
-    this.options.onComplete = (function(transport, object) {
-      this.updateContent();
-      onComplete(transport, object);
-    }).bind(this);
+  status:      0,
+  statusText: '',
 
-    this.request(url);
+  getStatus: Ajax.Request.prototype.getStatus,
+
+  getStatusText: function() {
+    try {
+      return this.transport.statusText || '';
+    } catch (e) { return '' }
   },
 
-  updateContent: function() {
-    var receiver = this.responseIsSuccess() ?
-      this.containers.success : this.containers.failure;
-    var response = this.transport.responseText;
+  getHeader: Ajax.Request.prototype.getHeader,
 
-    if (!this.options.evalScripts)
-      response = response.stripScripts();
+  getAllHeaders: function() {
+    try {
+      return this.getAllResponseHeaders();
+    } catch (e) { return null }
+  },
 
-    if (receiver) {
-      if (this.options.insertion) {
-        new this.options.insertion(receiver, response);
-      } else {
-        Element.update(receiver, response);
-      }
+  getResponseHeader: function(name) {
+    return this.transport.getResponseHeader(name);
+  },
+
+  getAllResponseHeaders: function() {
+    return this.transport.getAllResponseHeaders();
+  },
+
+  _getHeaderJSON: function() {
+    var json = this.getHeader('X-JSON');
+    if (!json) return null;
+    json = decodeURIComponent(escape(json));
+    try {
+      return json.evalJSON(this.request.options.sanitizeJSON);
+    } catch (e) {
+      this.request.dispatchException(e);
+    }
+  },
+
+  _getResponseJSON: function() {
+    var options = this.request.options;
+    if (!options.evalJSON || (options.evalJSON != 'force' &&
+      !(this.getHeader('Content-type') || '').include('application/json')) ||
+        this.responseText.blank())
+          return null;
+    try {
+      return this.responseText.evalJSON(options.sanitizeJSON);
+    } catch (e) {
+      this.request.dispatchException(e);
     }
+  }
+});
+
+Ajax.Updater = Class.create(Ajax.Request, {
+  initialize: function($super, container, url, options) {
+    this.container = {
+      success: (container.success || container),
+      failure: (container.failure || (container.success ? null : container))
+    };
+
+    options = Object.clone(options);
+    var onComplete = options.onComplete;
+    options.onComplete = (function(response, json) {
+      this.updateContent(response.responseText);
+      if (Object.isFunction(onComplete)) onComplete(response, json);
+    }).bind(this);
+
+    $super(url, options);
+  },
+
+  updateContent: function(responseText) {
+    var receiver = this.container[this.success() ? 'success' : 'failure'],
+        options = this.options;
+
+    if (!options.evalScripts) responseText = responseText.stripScripts();
 
-    if (this.responseIsSuccess()) {
-      if (this.onComplete)
-        setTimeout(this.onComplete.bind(this), 10);
+    if (receiver = $(receiver)) {
+      if (options.insertion) {
+        if (Object.isString(options.insertion)) {
+          var insertion = { }; insertion[options.insertion] = responseText;
+          receiver.insert(insertion);
+        }
+        else options.insertion(receiver, responseText);
+      }
+      else receiver.update(responseText);
     }
   }
 });
 
-Ajax.PeriodicalUpdater = Class.create();
-Ajax.PeriodicalUpdater.prototype = Object.extend(new Ajax.Base(), {
-  initialize: function(container, url, options) {
-    this.setOptions(options);
+Ajax.PeriodicalUpdater = Class.create(Ajax.Base, {
+  initialize: function($super, container, url, options) {
+    $super(options);
     this.onComplete = this.options.onComplete;
 
     this.frequency = (this.options.frequency || 2);
     this.decay = (this.options.decay || 1);
 
-    this.updater = {};
+    this.updater = { };
     this.container = container;
     this.url = url;
 
@@ -853,119 +1468,337 @@ Ajax.PeriodicalUpdater.prototype = Object.extend(new Ajax.Base(), {
   },
 
   stop: function() {
-    this.updater.onComplete = undefined;
+    this.updater.options.onComplete = undefined;
     clearTimeout(this.timer);
     (this.onComplete || Prototype.emptyFunction).apply(this, arguments);
   },
 
-  updateComplete: function(request) {
+  updateComplete: function(response) {
     if (this.options.decay) {
-      this.decay = (request.responseText == this.lastText ?
+      this.decay = (response.responseText == this.lastText ?
         this.decay * this.options.decay : 1);
 
-      this.lastText = request.responseText;
+      this.lastText = response.responseText;
     }
-    this.timer = setTimeout(this.onTimerEvent.bind(this),
-      this.decay * this.frequency * 1000);
+    this.timer = this.onTimerEvent.bind(this).delay(this.decay * this.frequency);
   },
 
   onTimerEvent: function() {
     this.updater = new Ajax.Updater(this.container, this.url, this.options);
   }
 });
-function $() {
-  var results = [], element;
-  for (var i = 0; i < arguments.length; i++) {
-    element = arguments[i];
-    if (typeof element == 'string')
-      element = document.getElementById(element);
-    results.push(Element.extend(element));
-  }
-  return results.length < 2 ? results[0] : results;
+function $(element) {
+  if (arguments.length > 1) {
+    for (var i = 0, elements = [], length = arguments.length; i < length; i++)
+      elements.push($(arguments[i]));
+    return elements;
+  }
+  if (Object.isString(element))
+    element = document.getElementById(element);
+  return Element.extend(element);
 }
 
-document.getElementsByClassName = function(className, parentElement) {
-  var children = ($(parentElement) || document.body).getElementsByTagName('*');
-  return $A(children).inject([], function(elements, child) {
-    if (child.className.match(new RegExp("(^|\\s)" + className + "(\\s|$)")))
-      elements.push(Element.extend(child));
-    return elements;
-  });
+if (Prototype.BrowserFeatures.XPath) {
+  document._getElementsByXPath = function(expression, parentElement) {
+    var results = [];
+    var query = document.evaluate(expression, $(parentElement) || document,
+      null, XPathResult.ORDERED_NODE_SNAPSHOT_TYPE, null);
+    for (var i = 0, length = query.snapshotLength; i < length; i++)
+      results.push(Element.extend(query.snapshotItem(i)));
+    return results;
+  };
 }
 
 /*--------------------------------------------------------------------------*/
 
-if (!window.Element)
-  var Element = new Object();
-
-Element.extend = function(element) {
-  if (!element) return;
+if (!window.Node) var Node = { };
+
+if (!Node.ELEMENT_NODE) {
+  // DOM level 2 ECMAScript Language Binding
+  Object.extend(Node, {
+    ELEMENT_NODE: 1,
+    ATTRIBUTE_NODE: 2,
+    TEXT_NODE: 3,
+    CDATA_SECTION_NODE: 4,
+    ENTITY_REFERENCE_NODE: 5,
+    ENTITY_NODE: 6,
+    PROCESSING_INSTRUCTION_NODE: 7,
+    COMMENT_NODE: 8,
+    DOCUMENT_NODE: 9,
+    DOCUMENT_TYPE_NODE: 10,
+    DOCUMENT_FRAGMENT_NODE: 11,
+    NOTATION_NODE: 12
+  });
+}
 
-  if (!element._extended && element.tagName && element != window) {
-    var methods = Element.Methods;
-    for (property in methods) {
-      var value = methods[property];
-      if (typeof value == 'function')
-        element[property] = value.bind(null, element);
+(function() {
+  var element = this.Element;
+  this.Element = function(tagName, attributes) {
+    attributes = attributes || { };
+    tagName = tagName.toLowerCase();
+    var cache = Element.cache;
+    if (Prototype.Browser.IE && attributes.name) {
+      tagName = '<' + tagName + ' name="' + attributes.name + '">';
+      delete attributes.name;
+      return Element.writeAttribute(document.createElement(tagName), attributes);
     }
-  }
+    if (!cache[tagName]) cache[tagName] = Element.extend(document.createElement(tagName));
+    return Element.writeAttribute(cache[tagName].cloneNode(false), attributes);
+  };
+  Object.extend(this.Element, element || { });
+}).call(window);
 
-  element._extended = true;
-  return element;
-}
+Element.cache = { };
 
 Element.Methods = {
   visible: function(element) {
     return $(element).style.display != 'none';
   },
 
-  toggle: function() {
-    for (var i = 0; i < arguments.length; i++) {
-      var element = $(arguments[i]);
-      Element[Element.visible(element) ? 'hide' : 'show'](element);
-    }
+  toggle: function(element) {
+    element = $(element);
+    Element[Element.visible(element) ? 'hide' : 'show'](element);
+    return element;
   },
 
-  hide: function() {
-    for (var i = 0; i < arguments.length; i++) {
-      var element = $(arguments[i]);
-      element.style.display = 'none';
-    }
+  hide: function(element) {
+    $(element).style.display = 'none';
+    return element;
   },
 
-  show: function() {
-    for (var i = 0; i < arguments.length; i++) {
-      var element = $(arguments[i]);
-      element.style.display = '';
-    }
+  show: function(element) {
+    $(element).style.display = '';
+    return element;
   },
 
   remove: function(element) {
     element = $(element);
     element.parentNode.removeChild(element);
+    return element;
   },
 
-  update: function(element, html) {
-    $(element).innerHTML = html.stripScripts();
-    setTimeout(function() {html.evalScripts()}, 10);
+  update: function(element, content) {
+    element = $(element);
+    if (content && content.toElement) content = content.toElement();
+    if (Object.isElement(content)) return element.update().insert(content);
+    content = Object.toHTML(content);
+    element.innerHTML = content.stripScripts();
+    content.evalScripts.bind(content).defer();
+    return element;
   },
 
-  replace: function(element, html) {
+  replace: function(element, content) {
     element = $(element);
-    if (element.outerHTML) {
-      element.outerHTML = html.stripScripts();
-    } else {
+    if (content && content.toElement) content = content.toElement();
+    else if (!Object.isElement(content)) {
+      content = Object.toHTML(content);
       var range = element.ownerDocument.createRange();
-      range.selectNodeContents(element);
-      element.parentNode.replaceChild(
-        range.createContextualFragment(html.stripScripts()), element);
+      range.selectNode(element);
+      content.evalScripts.bind(content).defer();
+      content = range.createContextualFragment(content.stripScripts());
     }
-    setTimeout(function() {html.evalScripts()}, 10);
+    element.parentNode.replaceChild(content, element);
+    return element;
   },
 
-  getHeight: function(element) {
+  insert: function(element, insertions) {
+    element = $(element);
+
+    if (Object.isString(insertions) || Object.isNumber(insertions) ||
+        Object.isElement(insertions) || (insertions && (insertions.toElement || insertions.toHTML)))
+          insertions = {bottom:insertions};
+
+    var content, insert, tagName, childNodes;
+
+    for (position in insertions) {
+      content  = insertions[position];
+      position = position.toLowerCase();
+      insert = Element._insertionTranslations[position];
+
+      if (content && content.toElement) content = content.toElement();
+      if (Object.isElement(content)) {
+        insert(element, content);
+        continue;
+      }
+
+      content = Object.toHTML(content);
+
+      tagName = ((position == 'before' || position == 'after')
+        ? element.parentNode : element).tagName.toUpperCase();
+
+      childNodes = Element._getContentFromAnonymousElement(tagName, content.stripScripts());
+
+      if (position == 'top' || position == 'after') childNodes.reverse();
+      childNodes.each(insert.curry(element));
+
+      content.evalScripts.bind(content).defer();
+    }
+
+    return element;
+  },
+
+  wrap: function(element, wrapper, attributes) {
+    element = $(element);
+    if (Object.isElement(wrapper))
+      $(wrapper).writeAttribute(attributes || { });
+    else if (Object.isString(wrapper)) wrapper = new Element(wrapper, attributes);
+    else wrapper = new Element('div', wrapper);
+    if (element.parentNode)
+      element.parentNode.replaceChild(wrapper, element);
+    wrapper.appendChild(element);
+    return wrapper;
+  },
+
+  inspect: function(element) {
+    element = $(element);
+    var result = '<' + element.tagName.toLowerCase();
+    $H({'id': 'id', 'className': 'class'}).each(function(pair) {
+      var property = pair.first(), attribute = pair.last();
+      var value = (element[property] || '').toString();
+      if (value) result += ' ' + attribute + '=' + value.inspect(true);
+    });
+    return result + '>';
+  },
+
+  recursivelyCollect: function(element, property) {
+    element = $(element);
+    var elements = [];
+    while (element = element[property])
+      if (element.nodeType == 1)
+        elements.push(Element.extend(element));
+    return elements;
+  },
+
+  ancestors: function(element) {
+    return $(element).recursivelyCollect('parentNode');
+  },
+
+  descendants: function(element) {
+    return $(element).getElementsBySelector("*");
+  },
+
+  firstDescendant: function(element) {
+    element = $(element).firstChild;
+    while (element && element.nodeType != 1) element = element.nextSibling;
+    return $(element);
+  },
+
+  immediateDescendants: function(element) {
+    if (!(element = $(element).firstChild)) return [];
+    while (element && element.nodeType != 1) element = element.nextSibling;
+    if (element) return [element].concat($(element).nextSiblings());
+    return [];
+  },
+
+  previousSiblings: function(element) {
+    return $(element).recursivelyCollect('previousSibling');
+  },
+
+  nextSiblings: function(element) {
+    return $(element).recursivelyCollect('nextSibling');
+  },
+
+  siblings: function(element) {
+    element = $(element);
+    return element.previousSiblings().reverse().concat(element.nextSiblings());
+  },
+
+  match: function(element, selector) {
+    if (Object.isString(selector))
+      selector = new Selector(selector);
+    return selector.match($(element));
+  },
+
+  up: function(element, expression, index) {
+    element = $(element);
+    if (arguments.length == 1) return $(element.parentNode);
+    var ancestors = element.ancestors();
+    return Object.isNumber(expression) ? ancestors[expression] :
+      Selector.findElement(ancestors, expression, index);
+  },
+
+  down: function(element, expression, index) {
+    element = $(element);
+    if (arguments.length == 1) return element.firstDescendant();
+    return Object.isNumber(expression) ? element.descendants()[expression] :
+      element.select(expression)[index || 0];
+  },
+
+  previous: function(element, expression, index) {
+    element = $(element);
+    if (arguments.length == 1) return $(Selector.handlers.previousElementSibling(element));
+    var previousSiblings = element.previousSiblings();
+    return Object.isNumber(expression) ? previousSiblings[expression] :
+      Selector.findElement(previousSiblings, expression, index);
+  },
+
+  next: function(element, expression, index) {
     element = $(element);
-    return element.offsetHeight;
+    if (arguments.length == 1) return $(Selector.handlers.nextElementSibling(element));
+    var nextSiblings = element.nextSiblings();
+    return Object.isNumber(expression) ? nextSiblings[expression] :
+      Selector.findElement(nextSiblings, expression, index);
+  },
+
+  select: function() {
+    var args = $A(arguments), element = $(args.shift());
+    return Selector.findChildElements(element, args);
+  },
+
+  adjacent: function() {
+    var args = $A(arguments), element = $(args.shift());
+    return Selector.findChildElements(element.parentNode, args).without(element);
+  },
+
+  identify: function(element) {
+    element = $(element);
+    var id = element.readAttribute('id'), self = arguments.callee;
+    if (id) return id;
+    do { id = 'anonymous_element_' + self.counter++ } while ($(id));
+    element.writeAttribute('id', id);
+    return id;
+  },
+
+  readAttribute: function(element, name) {
+    element = $(element);
+    if (Prototype.Browser.IE) {
+      var t = Element._attributeTranslations.read;
+      if (t.values[name]) return t.values[name](element, name);
+      if (t.names[name]) name = t.names[name];
+      if (name.include(':')) {
+        return (!element.attributes || !element.attributes[name]) ? null :
+         element.attributes[name].value;
+      }
+    }
+    return element.getAttribute(name);
+  },
+
+  writeAttribute: function(element, name, value) {
+    element = $(element);
+    var attributes = { }, t = Element._attributeTranslations.write;
+
+    if (typeof name == 'object') attributes = name;
+    else attributes[name] = Object.isUndefined(value) ? true : value;
+
+    for (var attr in attributes) {
+      name = t.names[attr] || attr;
+      value = attributes[attr];
+      if (t.values[attr]) name = t.values[attr](element, value);
+      if (value === false || value === null)
+        element.removeAttribute(name);
+      else if (value === true)
+        element.setAttribute(name, name);
+      else element.setAttribute(name, value);
+    }
+    return element;
+  },
+
+  getHeight: function(element) {
+    return $(element).getDimensions().height;
+  },
+
+  getWidth: function(element) {
+    return $(element).getDimensions().width;
   },
 
   classNames: function(element) {
@@ -974,74 +1807,122 @@ Element.Methods = {
 
   hasClassName: function(element, className) {
     if (!(element = $(element))) return;
-    return Element.classNames(element).include(className);
+    var elementClassName = element.className;
+    return (elementClassName.length > 0 && (elementClassName == className ||
+      new RegExp("(^|\\s)" + className + "(\\s|$)").test(elementClassName)));
   },
 
   addClassName: function(element, className) {
     if (!(element = $(element))) return;
-    return Element.classNames(element).add(className);
+    if (!element.hasClassName(className))
+      element.className += (element.className ? ' ' : '') + className;
+    return element;
   },
 
   removeClassName: function(element, className) {
     if (!(element = $(element))) return;
-    return Element.classNames(element).remove(className);
+    element.className = element.className.replace(
+      new RegExp("(^|\\s+)" + className + "(\\s+|$)"), ' ').strip();
+    return element;
+  },
+
+  toggleClassName: function(element, className) {
+    if (!(element = $(element))) return;
+    return element[element.hasClassName(className) ?
+      'removeClassName' : 'addClassName'](className);
   },
 
   // removes whitespace-only text node children
   cleanWhitespace: function(element) {
     element = $(element);
-    for (var i = 0; i < element.childNodes.length; i++) {
-      var node = element.childNodes[i];
+    var node = element.firstChild;
+    while (node) {
+      var nextNode = node.nextSibling;
       if (node.nodeType == 3 && !/\S/.test(node.nodeValue))
-        Element.remove(node);
+        element.removeChild(node);
+      node = nextNode;
     }
+    return element;
   },
 
   empty: function(element) {
-    return $(element).innerHTML.match(/^\s*$/);
+    return $(element).innerHTML.blank();
   },
 
-  childOf: function(element, ancestor) {
+  descendantOf: function(element, ancestor) {
     element = $(element), ancestor = $(ancestor);
+    var originalAncestor = ancestor;
+
+    if (element.compareDocumentPosition)
+      return (element.compareDocumentPosition(ancestor) & 8) === 8;
+
+    if (element.sourceIndex && !Prototype.Browser.Opera) {
+      var e = element.sourceIndex, a = ancestor.sourceIndex,
+       nextAncestor = ancestor.nextSibling;
+      if (!nextAncestor) {
+        do { ancestor = ancestor.parentNode; }
+        while (!(nextAncestor = ancestor.nextSibling) && ancestor.parentNode);
+      }
+      if (nextAncestor) return (e > a && e < nextAncestor.sourceIndex);
+    }
+
     while (element = element.parentNode)
-      if (element == ancestor) return true;
+      if (element == originalAncestor) return true;
     return false;
   },
 
   scrollTo: function(element) {
     element = $(element);
-    var x = element.x ? element.x : element.offsetLeft,
-        y = element.y ? element.y : element.offsetTop;
-    window.scrollTo(x, y);
+    var pos = element.cumulativeOffset();
+    window.scrollTo(pos[0], pos[1]);
+    return element;
   },
 
   getStyle: function(element, style) {
     element = $(element);
-    var value = element.style[style.camelize()];
+    style = style == 'float' ? 'cssFloat' : style.camelize();
+    var value = element.style[style];
     if (!value) {
-      if (document.defaultView && document.defaultView.getComputedStyle) {
-        var css = document.defaultView.getComputedStyle(element, null);
-        value = css ? css.getPropertyValue(style) : null;
-      } else if (element.currentStyle) {
-        value = element.currentStyle[style.camelize()];
-      }
+      var css = document.defaultView.getComputedStyle(element, null);
+      value = css ? css[style] : null;
     }
+    if (style == 'opacity') return value ? parseFloat(value) : 1.0;
+    return value == 'auto' ? null : value;
+  },
 
-    if (window.opera && ['left', 'top', 'right', 'bottom'].include(style))
-      if (Element.getStyle(element, 'position') == 'static') value = 'auto';
+  getOpacity: function(element) {
+    return $(element).getStyle('opacity');
+  },
 
-    return value == 'auto' ? null : value;
+  setStyle: function(element, styles) {
+    element = $(element);
+    var elementStyle = element.style, match;
+    if (Object.isString(styles)) {
+      element.style.cssText += ';' + styles;
+      return styles.include('opacity') ?
+        element.setOpacity(styles.match(/opacity:\s*(\d?\.?\d*)/)[1]) : element;
+    }
+    for (var property in styles)
+      if (property == 'opacity') element.setOpacity(styles[property]);
+      else
+        elementStyle[(property == 'float' || property == 'cssFloat') ?
+          (Object.isUndefined(elementStyle.styleFloat) ? 'cssFloat' : 'styleFloat') :
+            property] = styles[property];
+
+    return element;
   },
 
-  setStyle: function(element, style) {
+  setOpacity: function(element, value) {
     element = $(element);
-    for (name in style)
-      element.style[name.camelize()] = style[name];
+    element.style.opacity = (value == 1 || value === '') ? '' :
+      (value < 0.00001) ? 0 : value;
+    return element;
   },
 
   getDimensions: function(element) {
     element = $(element);
-    if (Element.getStyle(element, 'display') != 'none')
+    var display = $(element).getStyle('display');
+    if (display != 'none' && display != null) // Safari bug
       return {width: element.offsetWidth, height: element.offsetHeight};
 
     // All *Width and *Height properties give 0 on elements with display none,
@@ -1049,12 +1930,13 @@ Element.Methods = {
     var els = element.style;
     var originalVisibility = els.visibility;
     var originalPosition = els.position;
+    var originalDisplay = els.display;
     els.visibility = 'hidden';
     els.position = 'absolute';
-    els.display = '';
+    els.display = 'block';
     var originalWidth = element.clientWidth;
     var originalHeight = element.clientHeight;
-    els.display = 'none';
+    els.display = originalDisplay;
     els.position = originalPosition;
     els.visibility = originalVisibility;
     return {width: originalWidth, height: originalHeight};
@@ -1073,6 +1955,7 @@ Element.Methods = {
         element.style.left = 0;
       }
     }
+    return element;
   },
 
   undoPositioned: function(element) {
@@ -1085,500 +1968,1642 @@ Element.Methods = {
         element.style.bottom =
         element.style.right = '';
     }
+    return element;
   },
 
   makeClipping: function(element) {
     element = $(element);
-    if (element._overflow) return;
-    element._overflow = element.style.overflow;
-    if ((Element.getStyle(element, 'overflow') || 'visible') != 'hidden')
+    if (element._overflow) return element;
+    element._overflow = Element.getStyle(element, 'overflow') || 'auto';
+    if (element._overflow !== 'hidden')
       element.style.overflow = 'hidden';
+    return element;
   },
 
   undoClipping: function(element) {
     element = $(element);
-    if (element._overflow) return;
-    element.style.overflow = element._overflow;
-    element._overflow = undefined;
+    if (!element._overflow) return element;
+    element.style.overflow = element._overflow == 'auto' ? '' : element._overflow;
+    element._overflow = null;
+    return element;
+  },
+
+  cumulativeOffset: function(element) {
+    var valueT = 0, valueL = 0;
+    do {
+      valueT += element.offsetTop  || 0;
+      valueL += element.offsetLeft || 0;
+      element = element.offsetParent;
+    } while (element);
+    return Element._returnOffset(valueL, valueT);
+  },
+
+  positionedOffset: function(element) {
+    var valueT = 0, valueL = 0;
+    do {
+      valueT += element.offsetTop  || 0;
+      valueL += element.offsetLeft || 0;
+      element = element.offsetParent;
+      if (element) {
+        if (element.tagName == 'BODY') break;
+        var p = Element.getStyle(element, 'position');
+        if (p == 'relative' || p == 'absolute') break;
+      }
+    } while (element);
+    return Element._returnOffset(valueL, valueT);
+  },
+
+  absolutize: function(element) {
+    element = $(element);
+    if (element.getStyle('position') == 'absolute') return;
+    // Position.prepare(); // To be done manually by Scripty when it needs it.
+
+    var offsets = element.positionedOffset();
+    var top     = offsets[1];
+    var left    = offsets[0];
+    var width   = element.clientWidth;
+    var height  = element.clientHeight;
+
+    element._originalLeft   = left - parseFloat(element.style.left  || 0);
+    element._originalTop    = top  - parseFloat(element.style.top || 0);
+    element._originalWidth  = element.style.width;
+    element._originalHeight = element.style.height;
+
+    element.style.position = 'absolute';
+    element.style.top    = top + 'px';
+    element.style.left   = left + 'px';
+    element.style.width  = width + 'px';
+    element.style.height = height + 'px';
+    return element;
+  },
+
+  relativize: function(element) {
+    element = $(element);
+    if (element.getStyle('position') == 'relative') return;
+    // Position.prepare(); // To be done manually by Scripty when it needs it.
+
+    element.style.position = 'relative';
+    var top  = parseFloat(element.style.top  || 0) - (element._originalTop || 0);
+    var left = parseFloat(element.style.left || 0) - (element._originalLeft || 0);
+
+    element.style.top    = top + 'px';
+    element.style.left   = left + 'px';
+    element.style.height = element._originalHeight;
+    element.style.width  = element._originalWidth;
+    return element;
+  },
+
+  cumulativeScrollOffset: function(element) {
+    var valueT = 0, valueL = 0;
+    do {
+      valueT += element.scrollTop  || 0;
+      valueL += element.scrollLeft || 0;
+      element = element.parentNode;
+    } while (element);
+    return Element._returnOffset(valueL, valueT);
+  },
+
+  getOffsetParent: function(element) {
+    if (element.offsetParent) return $(element.offsetParent);
+    if (element == document.body) return $(element);
+
+    while ((element = element.parentNode) && element != document.body)
+      if (Element.getStyle(element, 'position') != 'static')
+        return $(element);
+
+    return $(document.body);
+  },
+
+  viewportOffset: function(forElement) {
+    var valueT = 0, valueL = 0;
+
+    var element = forElement;
+    do {
+      valueT += element.offsetTop  || 0;
+      valueL += element.offsetLeft || 0;
+
+      // Safari fix
+      if (element.offsetParent == document.body &&
+        Element.getStyle(element, 'position') == 'absolute') break;
+
+    } while (element = element.offsetParent);
+
+    element = forElement;
+    do {
+      if (!Prototype.Browser.Opera || element.tagName == 'BODY') {
+        valueT -= element.scrollTop  || 0;
+        valueL -= element.scrollLeft || 0;
+      }
+    } while (element = element.parentNode);
+
+    return Element._returnOffset(valueL, valueT);
+  },
+
+  clonePosition: function(element, source) {
+    var options = Object.extend({
+      setLeft:    true,
+      setTop:     true,
+      setWidth:   true,
+      setHeight:  true,
+      offsetTop:  0,
+      offsetLeft: 0
+    }, arguments[2] || { });
+
+    // find page position of source
+    source = $(source);
+    var p = source.viewportOffset();
+
+    // find coordinate system to use
+    element = $(element);
+    var delta = [0, 0];
+    var parent = null;
+    // delta [0,0] will do fine with position: fixed elements,
+    // position:absolute needs offsetParent deltas
+    if (Element.getStyle(element, 'position') == 'absolute') {
+      parent = element.getOffsetParent();
+      delta = parent.viewportOffset();
+    }
+
+    // correct by body offsets (fixes Safari)
+    if (parent == document.body) {
+      delta[0] -= document.body.offsetLeft;
+      delta[1] -= document.body.offsetTop;
+    }
+
+    // set position
+    if (options.setLeft)   element.style.left  = (p[0] - delta[0] + options.offsetLeft) + 'px';
+    if (options.setTop)    element.style.top   = (p[1] - delta[1] + options.offsetTop) + 'px';
+    if (options.setWidth)  element.style.width = source.offsetWidth + 'px';
+    if (options.setHeight) element.style.height = source.offsetHeight + 'px';
+    return element;
   }
-}
+};
 
-Object.extend(Element, Element.Methods);
+Element.Methods.identify.counter = 1;
 
-var Toggle = new Object();
-Toggle.display = Element.toggle;
+Object.extend(Element.Methods, {
+  getElementsBySelector: Element.Methods.select,
+  childElements: Element.Methods.immediateDescendants
+});
 
-/*--------------------------------------------------------------------------*/
+Element._attributeTranslations = {
+  write: {
+    names: {
+      className: 'class',
+      htmlFor:   'for'
+    },
+    values: { }
+  }
+};
 
-Abstract.Insertion = function(adjacency) {
-  this.adjacency = adjacency;
+if (Prototype.Browser.Opera) {
+  Element.Methods.getStyle = Element.Methods.getStyle.wrap(
+    function(proceed, element, style) {
+      switch (style) {
+        case 'left': case 'top': case 'right': case 'bottom':
+          if (proceed(element, 'position') === 'static') return null;
+        case 'height': case 'width':
+          // returns '0px' for hidden elements; we want it to return null
+          if (!Element.visible(element)) return null;
+
+          // returns the border-box dimensions rather than the content-box
+          // dimensions, so we subtract padding and borders from the value
+          var dim = parseInt(proceed(element, style), 10);
+
+          if (dim !== element['offset' + style.capitalize()])
+            return dim + 'px';
+
+          var properties;
+          if (style === 'height') {
+            properties = ['border-top-width', 'padding-top',
+             'padding-bottom', 'border-bottom-width'];
+          }
+          else {
+            properties = ['border-left-width', 'padding-left',
+             'padding-right', 'border-right-width'];
+          }
+          return properties.inject(dim, function(memo, property) {
+            var val = proceed(element, property);
+            return val === null ? memo : memo - parseInt(val, 10);
+          }) + 'px';
+        default: return proceed(element, style);
+      }
+    }
+  );
+
+  Element.Methods.readAttribute = Element.Methods.readAttribute.wrap(
+    function(proceed, element, attribute) {
+      if (attribute === 'title') return element.title;
+      return proceed(element, attribute);
+    }
+  );
 }
 
-Abstract.Insertion.prototype = {
-  initialize: function(element, content) {
-    this.element = $(element);
-    this.content = content.stripScripts();
+else if (Prototype.Browser.IE) {
+  $w('positionedOffset getOffsetParent viewportOffset').each(function(method) {
+    Element.Methods[method] = Element.Methods[method].wrap(
+      function(proceed, element) {
+        element = $(element);
+        var position = element.getStyle('position');
+        if (position != 'static') return proceed(element);
+        element.setStyle({ position: 'relative' });
+        var value = proceed(element);
+        element.setStyle({ position: position });
+        return value;
+      }
+    );
+  });
 
-    if (this.adjacency && this.element.insertAdjacentHTML) {
-      try {
-        this.element.insertAdjacentHTML(this.adjacency, this.content);
-      } catch (e) {
-        if (this.element.tagName.toLowerCase() == 'tbody') {
-          this.insertContent(this.contentFromAnonymousTable());
-        } else {
-          throw e;
+  Element.Methods.getStyle = function(element, style) {
+    element = $(element);
+    style = (style == 'float' || style == 'cssFloat') ? 'styleFloat' : style.camelize();
+    var value = element.style[style];
+    if (!value && element.currentStyle) value = element.currentStyle[style];
+
+    if (style == 'opacity') {
+      if (value = (element.getStyle('filter') || '').match(/alpha\(opacity=(.*)\)/))
+        if (value[1]) return parseFloat(value[1]) / 100;
+      return 1.0;
+    }
+
+    if (value == 'auto') {
+      if ((style == 'width' || style == 'height') && (element.getStyle('display') != 'none'))
+        return element['offset' + style.capitalize()] + 'px';
+      return null;
+    }
+    return value;
+  };
+
+  Element.Methods.setOpacity = function(element, value) {
+    function stripAlpha(filter){
+      return filter.replace(/alpha\([^\)]*\)/gi,'');
+    }
+    element = $(element);
+    var currentStyle = element.currentStyle;
+    if ((currentStyle && !currentStyle.hasLayout) ||
+      (!currentStyle && element.style.zoom == 'normal'))
+        element.style.zoom = 1;
+
+    var filter = element.getStyle('filter'), style = element.style;
+    if (value == 1 || value === '') {
+      (filter = stripAlpha(filter)) ?
+        style.filter = filter : style.removeAttribute('filter');
+      return element;
+    } else if (value < 0.00001) value = 0;
+    style.filter = stripAlpha(filter) +
+      'alpha(opacity=' + (value * 100) + ')';
+    return element;
+  };
+
+  Element._attributeTranslations = {
+    read: {
+      names: {
+        'class': 'className',
+        'for':   'htmlFor'
+      },
+      values: {
+        _getAttr: function(element, attribute) {
+          return element.getAttribute(attribute, 2);
+        },
+        _getAttrNode: function(element, attribute) {
+          var node = element.getAttributeNode(attribute);
+          return node ? node.value : "";
+        },
+        _getEv: function(element, attribute) {
+          attribute = element.getAttribute(attribute);
+          return attribute ? attribute.toString().slice(23, -2) : null;
+        },
+        _flag: function(element, attribute) {
+          return $(element).hasAttribute(attribute) ? attribute : null;
+        },
+        style: function(element) {
+          return element.style.cssText.toLowerCase();
+        },
+        title: function(element) {
+          return element.title;
         }
       }
-    } else {
-      this.range = this.element.ownerDocument.createRange();
-      if (this.initializeRange) this.initializeRange();
-      this.insertContent([this.range.createContextualFragment(this.content)]);
     }
+  };
+
+  Element._attributeTranslations.write = {
+    names: Object.clone(Element._attributeTranslations.read.names),
+    values: {
+      checked: function(element, value) {
+        element.checked = !!value;
+      },
+
+      style: function(element, value) {
+        element.style.cssText = value ? value : '';
+      }
+    }
+  };
+
+  Element._attributeTranslations.has = {};
+
+  $w('colSpan rowSpan vAlign dateTime accessKey tabIndex ' +
+      'encType maxLength readOnly longDesc').each(function(attr) {
+    Element._attributeTranslations.write.names[attr.toLowerCase()] = attr;
+    Element._attributeTranslations.has[attr.toLowerCase()] = attr;
+  });
+
+  (function(v) {
+    Object.extend(v, {
+      href:        v._getAttr,
+      src:         v._getAttr,
+      type:        v._getAttr,
+      action:      v._getAttrNode,
+      disabled:    v._flag,
+      checked:     v._flag,
+      readonly:    v._flag,
+      multiple:    v._flag,
+      onload:      v._getEv,
+      onunload:    v._getEv,
+      onclick:     v._getEv,
+      ondblclick:  v._getEv,
+      onmousedown: v._getEv,
+      onmouseup:   v._getEv,
+      onmouseover: v._getEv,
+      onmousemove: v._getEv,
+      onmouseout:  v._getEv,
+      onfocus:     v._getEv,
+      onblur:      v._getEv,
+      onkeypress:  v._getEv,
+      onkeydown:   v._getEv,
+      onkeyup:     v._getEv,
+      onsubmit:    v._getEv,
+      onreset:     v._getEv,
+      onselect:    v._getEv,
+      onchange:    v._getEv
+    });
+  })(Element._attributeTranslations.read.values);
+}
+
+else if (Prototype.Browser.Gecko && /rv:1\.8\.0/.test(navigator.userAgent)) {
+  Element.Methods.setOpacity = function(element, value) {
+    element = $(element);
+    element.style.opacity = (value == 1) ? 0.999999 :
+      (value === '') ? '' : (value < 0.00001) ? 0 : value;
+    return element;
+  };
+}
+
+else if (Prototype.Browser.WebKit) {
+  Element.Methods.setOpacity = function(element, value) {
+    element = $(element);
+    element.style.opacity = (value == 1 || value === '') ? '' :
+      (value < 0.00001) ? 0 : value;
+
+    if (value == 1)
+      if(element.tagName == 'IMG' && element.width) {
+        element.width++; element.width--;
+      } else try {
+        var n = document.createTextNode(' ');
+        element.appendChild(n);
+        element.removeChild(n);
+      } catch (e) { }
+
+    return element;
+  };
+
+  // Safari returns margins on body which is incorrect if the child is absolutely
+  // positioned.  For performance reasons, redefine Element#cumulativeOffset for
+  // KHTML/WebKit only.
+  Element.Methods.cumulativeOffset = function(element) {
+    var valueT = 0, valueL = 0;
+    do {
+      valueT += element.offsetTop  || 0;
+      valueL += element.offsetLeft || 0;
+      if (element.offsetParent == document.body)
+        if (Element.getStyle(element, 'position') == 'absolute') break;
+
+      element = element.offsetParent;
+    } while (element);
+
+    return Element._returnOffset(valueL, valueT);
+  };
+}
+
+if (Prototype.Browser.IE || Prototype.Browser.Opera) {
+  // IE and Opera are missing .innerHTML support for TABLE-related and SELECT elements
+  Element.Methods.update = function(element, content) {
+    element = $(element);
+
+    if (content && content.toElement) content = content.toElement();
+    if (Object.isElement(content)) return element.update().insert(content);
+
+    content = Object.toHTML(content);
+    var tagName = element.tagName.toUpperCase();
+
+    if (tagName in Element._insertionTranslations.tags) {
+      $A(element.childNodes).each(function(node) { element.removeChild(node) });
+      Element._getContentFromAnonymousElement(tagName, content.stripScripts())
+        .each(function(node) { element.appendChild(node) });
+    }
+    else element.innerHTML = content.stripScripts();
+
+    content.evalScripts.bind(content).defer();
+    return element;
+  };
+}
+
+if (document.createElement('div').outerHTML) {
+  Element.Methods.replace = function(element, content) {
+    element = $(element);
+
+    if (content && content.toElement) content = content.toElement();
+    if (Object.isElement(content)) {
+      element.parentNode.replaceChild(content, element);
+      return element;
+    }
+
+    content = Object.toHTML(content);
+    var parent = element.parentNode, tagName = parent.tagName.toUpperCase();
+
+    if (Element._insertionTranslations.tags[tagName]) {
+      var nextSibling = element.next();
+      var fragments = Element._getContentFromAnonymousElement(tagName, content.stripScripts());
+      parent.removeChild(element);
+      if (nextSibling)
+        fragments.each(function(node) { parent.insertBefore(node, nextSibling) });
+      else
+        fragments.each(function(node) { parent.appendChild(node) });
+    }
+    else element.outerHTML = content.stripScripts();
+
+    content.evalScripts.bind(content).defer();
+    return element;
+  };
+}
+
+Element._returnOffset = function(l, t) {
+  var result = [l, t];
+  result.left = l;
+  result.top = t;
+  return result;
+};
 
-    setTimeout(function() {content.evalScripts()}, 10);
+Element._getContentFromAnonymousElement = function(tagName, html) {
+  var div = new Element('div'), t = Element._insertionTranslations.tags[tagName];
+  if (t) {
+    div.innerHTML = t[0] + html + t[1];
+    t[2].times(function() { div = div.firstChild });
+  } else div.innerHTML = html;
+  return $A(div.childNodes);
+};
+
+Element._insertionTranslations = {
+  before: function(element, node) {
+    element.parentNode.insertBefore(node, element);
+  },
+  top: function(element, node) {
+    element.insertBefore(node, element.firstChild);
+  },
+  bottom: function(element, node) {
+    element.appendChild(node);
+  },
+  after: function(element, node) {
+    element.parentNode.insertBefore(node, element.nextSibling);
   },
+  tags: {
+    TABLE:  ['<table>',                '</table>',                   1],
+    TBODY:  ['<table><tbody>',         '</tbody></table>',           2],
+    TR:     ['<table><tbody><tr>',     '</tr></tbody></table>',      3],
+    TD:     ['<table><tbody><tr><td>', '</td></tr></tbody></table>', 4],
+    SELECT: ['<select>',               '</select>',                  1]
+  }
+};
+
+(function() {
+  Object.extend(this.tags, {
+    THEAD: this.tags.TBODY,
+    TFOOT: this.tags.TBODY,
+    TH:    this.tags.TD
+  });
+}).call(Element._insertionTranslations);
 
-  contentFromAnonymousTable: function() {
-    var div = document.createElement('div');
-    div.innerHTML = '<table><tbody>' + this.content + '</tbody></table>';
-    return $A(div.childNodes[0].childNodes[0].childNodes);
+Element.Methods.Simulated = {
+  hasAttribute: function(element, attribute) {
+    attribute = Element._attributeTranslations.has[attribute] || attribute;
+    var node = $(element).getAttributeNode(attribute);
+    return node && node.specified;
   }
+};
+
+Element.Methods.ByTag = { };
+
+Object.extend(Element, Element.Methods);
+
+if (!Prototype.BrowserFeatures.ElementExtensions &&
+    document.createElement('div').__proto__) {
+  window.HTMLElement = { };
+  window.HTMLElement.prototype = document.createElement('div').__proto__;
+  Prototype.BrowserFeatures.ElementExtensions = true;
 }
 
-var Insertion = new Object();
+Element.extend = (function() {
+  if (Prototype.BrowserFeatures.SpecificElementExtensions)
+    return Prototype.K;
 
-Insertion.Before = Class.create();
-Insertion.Before.prototype = Object.extend(new Abstract.Insertion('beforeBegin'), {
-  initializeRange: function() {
-    this.range.setStartBefore(this.element);
-  },
+  var Methods = { }, ByTag = Element.Methods.ByTag;
+
+  var extend = Object.extend(function(element) {
+    if (!element || element._extendedByPrototype ||
+        element.nodeType != 1 || element == window) return element;
+
+    var methods = Object.clone(Methods),
+      tagName = element.tagName, property, value;
+
+    // extend methods for specific tags
+    if (ByTag[tagName]) Object.extend(methods, ByTag[tagName]);
 
-  insertContent: function(fragments) {
-    fragments.each((function(fragment) {
-      this.element.parentNode.insertBefore(fragment, this.element);
-    }).bind(this));
+    for (property in methods) {
+      value = methods[property];
+      if (Object.isFunction(value) && !(property in element))
+        element[property] = value.methodize();
+    }
+
+    element._extendedByPrototype = Prototype.emptyFunction;
+    return element;
+
+  }, {
+    refresh: function() {
+      // extend methods for all tags (Safari doesn't need this)
+      if (!Prototype.BrowserFeatures.ElementExtensions) {
+        Object.extend(Methods, Element.Methods);
+        Object.extend(Methods, Element.Methods.Simulated);
+      }
+    }
+  });
+
+  extend.refresh();
+  return extend;
+})();
+
+Element.hasAttribute = function(element, attribute) {
+  if (element.hasAttribute) return element.hasAttribute(attribute);
+  return Element.Methods.Simulated.hasAttribute(element, attribute);
+};
+
+Element.addMethods = function(methods) {
+  var F = Prototype.BrowserFeatures, T = Element.Methods.ByTag;
+
+  if (!methods) {
+    Object.extend(Form, Form.Methods);
+    Object.extend(Form.Element, Form.Element.Methods);
+    Object.extend(Element.Methods.ByTag, {
+      "FORM":     Object.clone(Form.Methods),
+      "INPUT":    Object.clone(Form.Element.Methods),
+      "SELECT":   Object.clone(Form.Element.Methods),
+      "TEXTAREA": Object.clone(Form.Element.Methods)
+    });
   }
-});
 
-Insertion.Top = Class.create();
-Insertion.Top.prototype = Object.extend(new Abstract.Insertion('afterBegin'), {
-  initializeRange: function() {
-    this.range.selectNodeContents(this.element);
-    this.range.collapse(true);
-  },
+  if (arguments.length == 2) {
+    var tagName = methods;
+    methods = arguments[1];
+  }
 
-  insertContent: function(fragments) {
-    fragments.reverse(false).each((function(fragment) {
-      this.element.insertBefore(fragment, this.element.firstChild);
-    }).bind(this));
+  if (!tagName) Object.extend(Element.Methods, methods || { });
+  else {
+    if (Object.isArray(tagName)) tagName.each(extend);
+    else extend(tagName);
   }
-});
 
-Insertion.Bottom = Class.create();
-Insertion.Bottom.prototype = Object.extend(new Abstract.Insertion('beforeEnd'), {
-  initializeRange: function() {
-    this.range.selectNodeContents(this.element);
-    this.range.collapse(this.element);
-  },
+  function extend(tagName) {
+    tagName = tagName.toUpperCase();
+    if (!Element.Methods.ByTag[tagName])
+      Element.Methods.ByTag[tagName] = { };
+    Object.extend(Element.Methods.ByTag[tagName], methods);
+  }
 
-  insertContent: function(fragments) {
-    fragments.each((function(fragment) {
-      this.element.appendChild(fragment);
-    }).bind(this));
+  function copy(methods, destination, onlyIfAbsent) {
+    onlyIfAbsent = onlyIfAbsent || false;
+    for (var property in methods) {
+      var value = methods[property];
+      if (!Object.isFunction(value)) continue;
+      if (!onlyIfAbsent || !(property in destination))
+        destination[property] = value.methodize();
+    }
   }
-});
 
-Insertion.After = Class.create();
-Insertion.After.prototype = Object.extend(new Abstract.Insertion('afterEnd'), {
-  initializeRange: function() {
-    this.range.setStartAfter(this.element);
-  },
+  function findDOMClass(tagName) {
+    var klass;
+    var trans = {
+      "OPTGROUP": "OptGroup", "TEXTAREA": "TextArea", "P": "Paragraph",
+      "FIELDSET": "FieldSet", "UL": "UList", "OL": "OList", "DL": "DList",
+      "DIR": "Directory", "H1": "Heading", "H2": "Heading", "H3": "Heading",
+      "H4": "Heading", "H5": "Heading", "H6": "Heading", "Q": "Quote",
+      "INS": "Mod", "DEL": "Mod", "A": "Anchor", "IMG": "Image", "CAPTION":
+      "TableCaption", "COL": "TableCol", "COLGROUP": "TableCol", "THEAD":
+      "TableSection", "TFOOT": "TableSection", "TBODY": "TableSection", "TR":
+      "TableRow", "TH": "TableCell", "TD": "TableCell", "FRAMESET":
+      "FrameSet", "IFRAME": "IFrame"
+    };
+    if (trans[tagName]) klass = 'HTML' + trans[tagName] + 'Element';
+    if (window[klass]) return window[klass];
+    klass = 'HTML' + tagName + 'Element';
+    if (window[klass]) return window[klass];
+    klass = 'HTML' + tagName.capitalize() + 'Element';
+    if (window[klass]) return window[klass];
+
+    window[klass] = { };
+    window[klass].prototype = document.createElement(tagName).__proto__;
+    return window[klass];
+  }
 
-  insertContent: function(fragments) {
-    fragments.each((function(fragment) {
-      this.element.parentNode.insertBefore(fragment,
-        this.element.nextSibling);
-    }).bind(this));
+  if (F.ElementExtensions) {
+    copy(Element.Methods, HTMLElement.prototype);
+    copy(Element.Methods.Simulated, HTMLElement.prototype, true);
   }
-});
 
-/*--------------------------------------------------------------------------*/
+  if (F.SpecificElementExtensions) {
+    for (var tag in Element.Methods.ByTag) {
+      var klass = findDOMClass(tag);
+      if (Object.isUndefined(klass)) continue;
+      copy(T[tag], klass.prototype);
+    }
+  }
 
-Element.ClassNames = Class.create();
-Element.ClassNames.prototype = {
-  initialize: function(element) {
-    this.element = $(element);
-  },
+  Object.extend(Element, Element.Methods);
+  delete Element.ByTag;
 
-  _each: function(iterator) {
-    this.element.className.split(/\s+/).select(function(name) {
-      return name.length > 0;
-    })._each(iterator);
-  },
+  if (Element.extend.refresh) Element.extend.refresh();
+  Element.cache = { };
+};
 
-  set: function(className) {
-    this.element.className = className;
+document.viewport = {
+  getDimensions: function() {
+    var dimensions = { };
+    var B = Prototype.Browser;
+    $w('width height').each(function(d) {
+      var D = d.capitalize();
+      dimensions[d] = (B.WebKit && !document.evaluate) ? self['inner' + D] :
+        (B.Opera) ? document.body['client' + D] : document.documentElement['client' + D];
+    });
+    return dimensions;
   },
 
-  add: function(classNameToAdd) {
-    if (this.include(classNameToAdd)) return;
-    this.set(this.toArray().concat(classNameToAdd).join(' '));
+  getWidth: function() {
+    return this.getDimensions().width;
   },
 
-  remove: function(classNameToRemove) {
-    if (!this.include(classNameToRemove)) return;
-    this.set(this.select(function(className) {
-      return className != classNameToRemove;
-    }).join(' '));
+  getHeight: function() {
+    return this.getDimensions().height;
   },
 
-  toString: function() {
-    return this.toArray().join(' ');
+  getScrollOffsets: function() {
+    return Element._returnOffset(
+      window.pageXOffset || document.documentElement.scrollLeft || document.body.scrollLeft,
+      window.pageYOffset || document.documentElement.scrollTop || document.body.scrollTop);
   }
-}
+};
+/* Portions of the Selector class are derived from Jack Slocum’s DomQuery,
+ * part of YUI-Ext version 0.40, distributed under the terms of an MIT-style
+ * license.  Please see http://www.yui-ext.com/ for more information. */
 
-Object.extend(Element.ClassNames.prototype, Enumerable);
-var Selector = Class.create();
-Selector.prototype = {
+var Selector = Class.create({
   initialize: function(expression) {
-    this.params = {classNames: []};
-    this.expression = expression.toString().strip();
-    this.parseExpression();
+    this.expression = expression.strip();
     this.compileMatcher();
   },
 
-  parseExpression: function() {
-    function abort(message) { throw 'Parse error in selector: ' + message; }
+  shouldUseXPath: function() {
+    if (!Prototype.BrowserFeatures.XPath) return false;
 
-    if (this.expression == '')  abort('empty expression');
+    var e = this.expression;
 
-    var params = this.params, expr = this.expression, match, modifier, clause, rest;
-    while (match = expr.match(/^(.*)\[([a-z0-9_:-]+?)(?:([~\|!]?=)(?:"([^"]*)"|([^\]\s]*)))?\]$/i)) {
-      params.attributes = params.attributes || [];
-      params.attributes.push({name: match[2], operator: match[3], value: match[4] || match[5] || ''});
-      expr = match[1];
-    }
+    // Safari 3 chokes on :*-of-type and :empty
+    if (Prototype.Browser.WebKit &&
+     (e.include("-of-type") || e.include(":empty")))
+      return false;
 
-    if (expr == '*') return this.params.wildcard = true;
+    // XPath can't do namespaced attributes, nor can it read
+    // the "checked" property from DOM nodes
+    if ((/(\[[\w-]*?:|:checked)/).test(this.expression))
+      return false;
 
-    while (match = expr.match(/^([^a-z0-9_-])?([a-z0-9_-]+)(.*)/i)) {
-      modifier = match[1], clause = match[2], rest = match[3];
-      switch (modifier) {
-        case '#':       params.id = clause; break;
-        case '.':       params.classNames.push(clause); break;
-        case '':
-        case undefined: params.tagName = clause.toUpperCase(); break;
-        default:        abort(expr.inspect());
+    return true;
+  },
+
+  compileMatcher: function() {
+    if (this.shouldUseXPath())
+      return this.compileXPathMatcher();
+
+    var e = this.expression, ps = Selector.patterns, h = Selector.handlers,
+        c = Selector.criteria, le, p, m;
+
+    if (Selector._cache[e]) {
+      this.matcher = Selector._cache[e];
+      return;
+    }
+
+    this.matcher = ["this.matcher = function(root) {",
+                    "var r = root, h = Selector.handlers, c = false, n;"];
+
+    while (e && le != e && (/\S/).test(e)) {
+      le = e;
+      for (var i in ps) {
+        p = ps[i];
+        if (m = e.match(p)) {
+          this.matcher.push(Object.isFunction(c[i]) ? c[i](m) :
+    	      new Template(c[i]).evaluate(m));
+          e = e.replace(m[0], '');
+          break;
+        }
       }
-      expr = rest;
     }
 
-    if (expr.length > 0) abort(expr.inspect());
+    this.matcher.push("return h.unique(n);\n}");
+    eval(this.matcher.join('\n'));
+    Selector._cache[this.expression] = this.matcher;
   },
 
-  buildMatchExpression: function() {
-    var params = this.params, conditions = [], clause;
+  compileXPathMatcher: function() {
+    var e = this.expression, ps = Selector.patterns,
+        x = Selector.xpath, le, m;
+
+    if (Selector._cache[e]) {
+      this.xpath = Selector._cache[e]; return;
+    }
 
-    if (params.wildcard)
-      conditions.push('true');
-    if (clause = params.id)
-      conditions.push('element.id == ' + clause.inspect());
-    if (clause = params.tagName)
-      conditions.push('element.tagName.toUpperCase() == ' + clause.inspect());
-    if ((clause = params.classNames).length > 0)
-      for (var i = 0; i < clause.length; i++)
-        conditions.push('Element.hasClassName(element, ' + clause[i].inspect() + ')');
-    if (clause = params.attributes) {
-      clause.each(function(attribute) {
-        var value = 'element.getAttribute(' + attribute.name.inspect() + ')';
-        var splitValueBy = function(delimiter) {
-          return value + ' && ' + value + '.split(' + delimiter.inspect() + ')';
+    this.matcher = ['.//*'];
+    while (e && le != e && (/\S/).test(e)) {
+      le = e;
+      for (var i in ps) {
+        if (m = e.match(ps[i])) {
+          this.matcher.push(Object.isFunction(x[i]) ? x[i](m) :
+            new Template(x[i]).evaluate(m));
+          e = e.replace(m[0], '');
+          break;
         }
+      }
+    }
 
-        switch (attribute.operator) {
-          case '=':       conditions.push(value + ' == ' + attribute.value.inspect()); break;
-          case '~=':      conditions.push(splitValueBy(' ') + '.include(' + attribute.value.inspect() + ')'); break;
-          case '|=':      conditions.push(
-                            splitValueBy('-') + '.first().toUpperCase() == ' + attribute.value.toUpperCase().inspect()
-                          ); break;
-          case '!=':      conditions.push(value + ' != ' + attribute.value.inspect()); break;
-          case '':
-          case undefined: conditions.push(value + ' != null'); break;
-          default:        throw 'Unknown operator ' + attribute.operator + ' in selector';
+    this.xpath = this.matcher.join('');
+    Selector._cache[this.expression] = this.xpath;
+  },
+
+  findElements: function(root) {
+    root = root || document;
+    if (this.xpath) return document._getElementsByXPath(this.xpath, root);
+    return this.matcher(root);
+  },
+
+  match: function(element) {
+    this.tokens = [];
+
+    var e = this.expression, ps = Selector.patterns, as = Selector.assertions;
+    var le, p, m;
+
+    while (e && le !== e && (/\S/).test(e)) {
+      le = e;
+      for (var i in ps) {
+        p = ps[i];
+        if (m = e.match(p)) {
+          // use the Selector.assertions methods unless the selector
+          // is too complex.
+          if (as[i]) {
+            this.tokens.push([i, Object.clone(m)]);
+            e = e.replace(m[0], '');
+          } else {
+            // reluctantly do a document-wide search
+            // and look for a match in the array
+            return this.findElements(document).include(element);
+          }
         }
-      });
+      }
+    }
+
+    var match = true, name, matches;
+    for (var i = 0, token; token = this.tokens[i]; i++) {
+      name = token[0], matches = token[1];
+      if (!Selector.assertions[name](element, matches)) {
+        match = false; break;
+      }
     }
 
-    return conditions.join(' && ');
+    return match;
   },
 
-  compileMatcher: function() {
-    this.match = new Function('element', 'if (!element.tagName) return false; \
-      return ' + this.buildMatchExpression());
+  toString: function() {
+    return this.expression;
   },
 
-  findElements: function(scope) {
-    var element;
+  inspect: function() {
+    return "#<Selector:" + this.expression.inspect() + ">";
+  }
+});
 
-    if (element = $(this.params.id))
-      if (this.match(element))
-        if (!scope || Element.childOf(element, scope))
-          return [element];
+Object.extend(Selector, {
+  _cache: { },
+
+  xpath: {
+    descendant:   "//*",
+    child:        "/*",
+    adjacent:     "/following-sibling::*[1]",
+    laterSibling: '/following-sibling::*',
+    tagName:      function(m) {
+      if (m[1] == '*') return '';
+      return "[local-name()='" + m[1].toLowerCase() +
+             "' or local-name()='" + m[1].toUpperCase() + "']";
+    },
+    className:    "[contains(concat(' ', @class, ' '), ' #{1} ')]",
+    id:           "[@id='#{1}']",
+    attrPresence: function(m) {
+      m[1] = m[1].toLowerCase();
+      return new Template("[@#{1}]").evaluate(m);
+    },
+    attr: function(m) {
+      m[1] = m[1].toLowerCase();
+      m[3] = m[5] || m[6];
+      return new Template(Selector.xpath.operators[m[2]]).evaluate(m);
+    },
+    pseudo: function(m) {
+      var h = Selector.xpath.pseudos[m[1]];
+      if (!h) return '';
+      if (Object.isFunction(h)) return h(m);
+      return new Template(Selector.xpath.pseudos[m[1]]).evaluate(m);
+    },
+    operators: {
+      '=':  "[@#{1}='#{3}']",
+      '!=': "[@#{1}!='#{3}']",
+      '^=': "[starts-with(@#{1}, '#{3}')]",
+      '$=': "[substring(@#{1}, (string-length(@#{1}) - string-length('#{3}') + 1))='#{3}']",
+      '*=': "[contains(@#{1}, '#{3}')]",
+      '~=': "[contains(concat(' ', @#{1}, ' '), ' #{3} ')]",
+      '|=': "[contains(concat('-', @#{1}, '-'), '-#{3}-')]"
+    },
+    pseudos: {
+      'first-child': '[not(preceding-sibling::*)]',
+      'last-child':  '[not(following-sibling::*)]',
+      'only-child':  '[not(preceding-sibling::* or following-sibling::*)]',
+      'empty':       "[count(*) = 0 and (count(text()) = 0 or translate(text(), ' \t\r\n', '') = '')]",
+      'checked':     "[@checked]",
+      'disabled':    "[@disabled]",
+      'enabled':     "[not(@disabled)]",
+      'not': function(m) {
+        var e = m[6], p = Selector.patterns,
+            x = Selector.xpath, le, v;
+
+        var exclusion = [];
+        while (e && le != e && (/\S/).test(e)) {
+          le = e;
+          for (var i in p) {
+            if (m = e.match(p[i])) {
+              v = Object.isFunction(x[i]) ? x[i](m) : new Template(x[i]).evaluate(m);
+              exclusion.push("(" + v.substring(1, v.length - 1) + ")");
+              e = e.replace(m[0], '');
+              break;
+            }
+          }
+        }
+        return "[not(" + exclusion.join(" and ") + ")]";
+      },
+      'nth-child':      function(m) {
+        return Selector.xpath.pseudos.nth("(count(./preceding-sibling::*) + 1) ", m);
+      },
+      'nth-last-child': function(m) {
+        return Selector.xpath.pseudos.nth("(count(./following-sibling::*) + 1) ", m);
+      },
+      'nth-of-type':    function(m) {
+        return Selector.xpath.pseudos.nth("position() ", m);
+      },
+      'nth-last-of-type': function(m) {
+        return Selector.xpath.pseudos.nth("(last() + 1 - position()) ", m);
+      },
+      'first-of-type':  function(m) {
+        m[6] = "1"; return Selector.xpath.pseudos['nth-of-type'](m);
+      },
+      'last-of-type':   function(m) {
+        m[6] = "1"; return Selector.xpath.pseudos['nth-last-of-type'](m);
+      },
+      'only-of-type':   function(m) {
+        var p = Selector.xpath.pseudos; return p['first-of-type'](m) + p['last-of-type'](m);
+      },
+      nth: function(fragment, m) {
+        var mm, formula = m[6], predicate;
+        if (formula == 'even') formula = '2n+0';
+        if (formula == 'odd')  formula = '2n+1';
+        if (mm = formula.match(/^(\d+)$/)) // digit only
+          return '[' + fragment + "= " + mm[1] + ']';
+        if (mm = formula.match(/^(-?\d*)?n(([+-])(\d+))?/)) { // an+b
+          if (mm[1] == "-") mm[1] = -1;
+          var a = mm[1] ? Number(mm[1]) : 1;
+          var b = mm[2] ? Number(mm[2]) : 0;
+          predicate = "[((#{fragment} - #{b}) mod #{a} = 0) and " +
+          "((#{fragment} - #{b}) div #{a} >= 0)]";
+          return new Template(predicate).evaluate({
+            fragment: fragment, a: a, b: b });
+        }
+      }
+    }
+  },
 
-    scope = (scope || document).getElementsByTagName(this.params.tagName || '*');
+  criteria: {
+    tagName:      'n = h.tagName(n, r, "#{1}", c);   c = false;',
+    className:    'n = h.className(n, r, "#{1}", c); c = false;',
+    id:           'n = h.id(n, r, "#{1}", c);        c = false;',
+    attrPresence: 'n = h.attrPresence(n, r, "#{1}"); c = false;',
+    attr: function(m) {
+      m[3] = (m[5] || m[6]);
+      return new Template('n = h.attr(n, r, "#{1}", "#{3}", "#{2}"); c = false;').evaluate(m);
+    },
+    pseudo: function(m) {
+      if (m[6]) m[6] = m[6].replace(/"/g, '\\"');
+      return new Template('n = h.pseudo(n, "#{1}", "#{6}", r, c); c = false;').evaluate(m);
+    },
+    descendant:   'c = "descendant";',
+    child:        'c = "child";',
+    adjacent:     'c = "adjacent";',
+    laterSibling: 'c = "laterSibling";'
+  },
+
+  patterns: {
+    // combinators must be listed first
+    // (and descendant needs to be last combinator)
+    laterSibling: /^\s*~\s*/,
+    child:        /^\s*>\s*/,
+    adjacent:     /^\s*\+\s*/,
+    descendant:   /^\s/,
+
+    // selectors follow
+    tagName:      /^\s*(\*|[\w\-]+)(\b|$)?/,
+    id:           /^#([\w\-\*]+)(\b|$)/,
+    className:    /^\.([\w\-\*]+)(\b|$)/,
+    pseudo:
+/^:((first|last|nth|nth-last|only)(-child|-of-type)|empty|checked|(en|dis)abled|not)(\((.*?)\))?(\b|$|(?=\s|[:+~>]))/,
+    attrPresence: /^\[([\w]+)\]/,
+    attr:         /\[((?:[\w-]*:)?[\w-]+)\s*(?:([!^$*~|]?=)\s*((['"])([^\4]*?)\4|([^'"][^\]]*?)))?\]/
+  },
+
+  // for Selector.match and Element#match
+  assertions: {
+    tagName: function(element, matches) {
+      return matches[1].toUpperCase() == element.tagName.toUpperCase();
+    },
+
+    className: function(element, matches) {
+      return Element.hasClassName(element, matches[1]);
+    },
+
+    id: function(element, matches) {
+      return element.id === matches[1];
+    },
+
+    attrPresence: function(element, matches) {
+      return Element.hasAttribute(element, matches[1]);
+    },
+
+    attr: function(element, matches) {
+      var nodeValue = Element.readAttribute(element, matches[1]);
+      return Selector.operators[matches[2]](nodeValue, matches[3]);
+    }
+  },
 
-    var results = [];
-    for (var i = 0; i < scope.length; i++)
-      if (this.match(element = scope[i]))
-        results.push(Element.extend(element));
+  handlers: {
+    // UTILITY FUNCTIONS
+    // joins two collections
+    concat: function(a, b) {
+      for (var i = 0, node; node = b[i]; i++)
+        a.push(node);
+      return a;
+    },
+
+    // marks an array of nodes for counting
+    mark: function(nodes) {
+      for (var i = 0, node; node = nodes[i]; i++)
+        node._counted = true;
+      return nodes;
+    },
+
+    unmark: function(nodes) {
+      for (var i = 0, node; node = nodes[i]; i++)
+        node._counted = undefined;
+      return nodes;
+    },
+
+    // mark each child node with its position (for nth calls)
+    // "ofType" flag indicates whether we're indexing for nth-of-type
+    // rather than nth-child
+    index: function(parentNode, reverse, ofType) {
+      parentNode._counted = true;
+      if (reverse) {
+        for (var nodes = parentNode.childNodes, i = nodes.length - 1, j = 1; i >= 0; i--) {
+          var node = nodes[i];
+          if (node.nodeType == 1 && (!ofType || node._counted)) node.nodeIndex = j++;
+        }
+      } else {
+        for (var i = 0, j = 1, nodes = parentNode.childNodes; node = nodes[i]; i++)
+          if (node.nodeType == 1 && (!ofType || node._counted)) node.nodeIndex = j++;
+      }
+    },
+
+    // filters out duplicates and extends all nodes
+    unique: function(nodes) {
+      if (nodes.length == 0) return nodes;
+      var results = [], n;
+      for (var i = 0, l = nodes.length; i < l; i++)
+        if (!(n = nodes[i])._counted) {
+          n._counted = true;
+          results.push(Element.extend(n));
+        }
+      return Selector.handlers.unmark(results);
+    },
+
+    // COMBINATOR FUNCTIONS
+    descendant: function(nodes) {
+      var h = Selector.handlers;
+      for (var i = 0, results = [], node; node = nodes[i]; i++)
+        h.concat(results, node.getElementsByTagName('*'));
+      return results;
+    },
+
+    child: function(nodes) {
+      var h = Selector.handlers;
+      for (var i = 0, results = [], node; node = nodes[i]; i++) {
+        for (var j = 0, child; child = node.childNodes[j]; j++)
+          if (child.nodeType == 1 && child.tagName != '!') results.push(child);
+      }
+      return results;
+    },
 
-    return results;
-  },
+    adjacent: function(nodes) {
+      for (var i = 0, results = [], node; node = nodes[i]; i++) {
+        var next = this.nextElementSibling(node);
+        if (next) results.push(next);
+      }
+      return results;
+    },
+
+    laterSibling: function(nodes) {
+      var h = Selector.handlers;
+      for (var i = 0, results = [], node; node = nodes[i]; i++)
+        h.concat(results, Element.nextSiblings(node));
+      return results;
+    },
+
+    nextElementSibling: function(node) {
+      while (node = node.nextSibling)
+	      if (node.nodeType == 1) return node;
+      return null;
+    },
+
+    previousElementSibling: function(node) {
+      while (node = node.previousSibling)
+        if (node.nodeType == 1) return node;
+      return null;
+    },
+
+    // TOKEN FUNCTIONS
+    tagName: function(nodes, root, tagName, combinator) {
+      var uTagName = tagName.toUpperCase();
+      var results = [], h = Selector.handlers;
+      if (nodes) {
+        if (combinator) {
+          // fastlane for ordinary descendant combinators
+          if (combinator == "descendant") {
+            for (var i = 0, node; node = nodes[i]; i++)
+              h.concat(results, node.getElementsByTagName(tagName));
+            return results;
+          } else nodes = this[combinator](nodes);
+          if (tagName == "*") return nodes;
+        }
+        for (var i = 0, node; node = nodes[i]; i++)
+          if (node.tagName.toUpperCase() === uTagName) results.push(node);
+        return results;
+      } else return root.getElementsByTagName(tagName);
+    },
+
+    id: function(nodes, root, id, combinator) {
+      var targetNode = $(id), h = Selector.handlers;
+      if (!targetNode) return [];
+      if (!nodes && root == document) return [targetNode];
+      if (nodes) {
+        if (combinator) {
+          if (combinator == 'child') {
+            for (var i = 0, node; node = nodes[i]; i++)
+              if (targetNode.parentNode == node) return [targetNode];
+          } else if (combinator == 'descendant') {
+            for (var i = 0, node; node = nodes[i]; i++)
+              if (Element.descendantOf(targetNode, node)) return [targetNode];
+          } else if (combinator == 'adjacent') {
+            for (var i = 0, node; node = nodes[i]; i++)
+              if (Selector.handlers.previousElementSibling(targetNode) == node)
+                return [targetNode];
+          } else nodes = h[combinator](nodes);
+        }
+        for (var i = 0, node; node = nodes[i]; i++)
+          if (node == targetNode) return [targetNode];
+        return [];
+      }
+      return (targetNode && Element.descendantOf(targetNode, root)) ? [targetNode] : [];
+    },
+
+    className: function(nodes, root, className, combinator) {
+      if (nodes && combinator) nodes = this[combinator](nodes);
+      return Selector.handlers.byClassName(nodes, root, className);
+    },
+
+    byClassName: function(nodes, root, className) {
+      if (!nodes) nodes = Selector.handlers.descendant([root]);
+      var needle = ' ' + className + ' ';
+      for (var i = 0, results = [], node, nodeClassName; node = nodes[i]; i++) {
+        nodeClassName = node.className;
+        if (nodeClassName.length == 0) continue;
+        if (nodeClassName == className || (' ' + nodeClassName + ' ').include(needle))
+          results.push(node);
+      }
+      return results;
+    },
+
+    attrPresence: function(nodes, root, attr) {
+      if (!nodes) nodes = root.getElementsByTagName("*");
+      var results = [];
+      for (var i = 0, node; node = nodes[i]; i++)
+        if (Element.hasAttribute(node, attr)) results.push(node);
+      return results;
+    },
+
+    attr: function(nodes, root, attr, value, operator) {
+      if (!nodes) nodes = root.getElementsByTagName("*");
+      var handler = Selector.operators[operator], results = [];
+      for (var i = 0, node; node = nodes[i]; i++) {
+        var nodeValue = Element.readAttribute(node, attr);
+        if (nodeValue === null) continue;
+        if (handler(nodeValue, value)) results.push(node);
+      }
+      return results;
+    },
 
-  toString: function() {
-    return this.expression;
-  }
-}
+    pseudo: function(nodes, name, value, root, combinator) {
+      if (nodes && combinator) nodes = this[combinator](nodes);
+      if (!nodes) nodes = root.getElementsByTagName("*");
+      return Selector.pseudos[name](nodes, value, root);
+    }
+  },
 
-function $$() {
-  return $A(arguments).map(function(expression) {
-    return expression.strip().split(/\s+/).inject([null], function(results, expr) {
-      var selector = new Selector(expr);
-      return results.map(selector.findElements.bind(selector)).flatten();
-    });
-  }).flatten();
-}
-var Field = {
-  clear: function() {
-    for (var i = 0; i < arguments.length; i++)
-      $(arguments[i]).value = '';
+  pseudos: {
+    'first-child': function(nodes, value, root) {
+      for (var i = 0, results = [], node; node = nodes[i]; i++) {
+        if (Selector.handlers.previousElementSibling(node)) continue;
+          results.push(node);
+      }
+      return results;
+    },
+    'last-child': function(nodes, value, root) {
+      for (var i = 0, results = [], node; node = nodes[i]; i++) {
+        if (Selector.handlers.nextElementSibling(node)) continue;
+          results.push(node);
+      }
+      return results;
+    },
+    'only-child': function(nodes, value, root) {
+      var h = Selector.handlers;
+      for (var i = 0, results = [], node; node = nodes[i]; i++)
+        if (!h.previousElementSibling(node) && !h.nextElementSibling(node))
+          results.push(node);
+      return results;
+    },
+    'nth-child':        function(nodes, formula, root) {
+      return Selector.pseudos.nth(nodes, formula, root);
+    },
+    'nth-last-child':   function(nodes, formula, root) {
+      return Selector.pseudos.nth(nodes, formula, root, true);
+    },
+    'nth-of-type':      function(nodes, formula, root) {
+      return Selector.pseudos.nth(nodes, formula, root, false, true);
+    },
+    'nth-last-of-type': function(nodes, formula, root) {
+      return Selector.pseudos.nth(nodes, formula, root, true, true);
+    },
+    'first-of-type':    function(nodes, formula, root) {
+      return Selector.pseudos.nth(nodes, "1", root, false, true);
+    },
+    'last-of-type':     function(nodes, formula, root) {
+      return Selector.pseudos.nth(nodes, "1", root, true, true);
+    },
+    'only-of-type':     function(nodes, formula, root) {
+      var p = Selector.pseudos;
+      return p['last-of-type'](p['first-of-type'](nodes, formula, root), formula, root);
+    },
+
+    // handles the an+b logic
+    getIndices: function(a, b, total) {
+      if (a == 0) return b > 0 ? [b] : [];
+      return $R(1, total).inject([], function(memo, i) {
+        if (0 == (i - b) % a && (i - b) / a >= 0) memo.push(i);
+        return memo;
+      });
+    },
+
+    // handles nth(-last)-child, nth(-last)-of-type, and (first|last)-of-type
+    nth: function(nodes, formula, root, reverse, ofType) {
+      if (nodes.length == 0) return [];
+      if (formula == 'even') formula = '2n+0';
+      if (formula == 'odd')  formula = '2n+1';
+      var h = Selector.handlers, results = [], indexed = [], m;
+      h.mark(nodes);
+      for (var i = 0, node; node = nodes[i]; i++) {
+        if (!node.parentNode._counted) {
+          h.index(node.parentNode, reverse, ofType);
+          indexed.push(node.parentNode);
+        }
+      }
+      if (formula.match(/^\d+$/)) { // just a number
+        formula = Number(formula);
+        for (var i = 0, node; node = nodes[i]; i++)
+          if (node.nodeIndex == formula) results.push(node);
+      } else if (m = formula.match(/^(-?\d*)?n(([+-])(\d+))?/)) { // an+b
+        if (m[1] == "-") m[1] = -1;
+        var a = m[1] ? Number(m[1]) : 1;
+        var b = m[2] ? Number(m[2]) : 0;
+        var indices = Selector.pseudos.getIndices(a, b, nodes.length);
+        for (var i = 0, node, l = indices.length; node = nodes[i]; i++) {
+          for (var j = 0; j < l; j++)
+            if (node.nodeIndex == indices[j]) results.push(node);
+        }
+      }
+      h.unmark(nodes);
+      h.unmark(indexed);
+      return results;
+    },
+
+    'empty': function(nodes, value, root) {
+      for (var i = 0, results = [], node; node = nodes[i]; i++) {
+        // IE treats comments as element nodes
+        if (node.tagName == '!' || (node.firstChild && !node.innerHTML.match(/^\s*$/))) continue;
+        results.push(node);
+      }
+      return results;
+    },
+
+    'not': function(nodes, selector, root) {
+      var h = Selector.handlers, selectorType, m;
+      var exclusions = new Selector(selector).findElements(root);
+      h.mark(exclusions);
+      for (var i = 0, results = [], node; node = nodes[i]; i++)
+        if (!node._counted) results.push(node);
+      h.unmark(exclusions);
+      return results;
+    },
+
+    'enabled': function(nodes, value, root) {
+      for (var i = 0, results = [], node; node = nodes[i]; i++)
+        if (!node.disabled) results.push(node);
+      return results;
+    },
+
+    'disabled': function(nodes, value, root) {
+      for (var i = 0, results = [], node; node = nodes[i]; i++)
+        if (node.disabled) results.push(node);
+      return results;
+    },
+
+    'checked': function(nodes, value, root) {
+      for (var i = 0, results = [], node; node = nodes[i]; i++)
+        if (node.checked) results.push(node);
+      return results;
+    }
   },
 
-  focus: function(element) {
-    $(element).focus();
+  operators: {
+    '=':  function(nv, v) { return nv == v; },
+    '!=': function(nv, v) { return nv != v; },
+    '^=': function(nv, v) { return nv.startsWith(v); },
+    '$=': function(nv, v) { return nv.endsWith(v); },
+    '*=': function(nv, v) { return nv.include(v); },
+    '~=': function(nv, v) { return (' ' + nv + ' ').include(' ' + v + ' '); },
+    '|=': function(nv, v) { return ('-' + nv.toUpperCase() + '-').include('-' + v.toUpperCase() + '-'); }
   },
 
-  present: function() {
-    for (var i = 0; i < arguments.length; i++)
-      if ($(arguments[i]).value == '') return false;
-    return true;
+  matchElements: function(elements, expression) {
+    var matches = new Selector(expression).findElements(), h = Selector.handlers;
+    h.mark(matches);
+    for (var i = 0, results = [], element; element = elements[i]; i++)
+      if (element._counted) results.push(element);
+    h.unmark(matches);
+    return results;
   },
 
-  select: function(element) {
-    $(element).select();
+  findElement: function(elements, expression, index) {
+    if (Object.isNumber(expression)) {
+      index = expression; expression = false;
+    }
+    return Selector.matchElements(elements, expression || '*')[index || 0];
   },
 
-  activate: function(element) {
-    element = $(element);
-    element.focus();
-    if (element.select)
-      element.select();
+  findChildElements: function(element, expressions) {
+    var exprs = expressions.join(',');
+    expressions = [];
+    exprs.scan(/(([\w#:.~>+()\s-]+|\*|\[.*?\])+)\s*(,|$)/, function(m) {
+      expressions.push(m[1].strip());
+    });
+    var results = [], h = Selector.handlers;
+    for (var i = 0, l = expressions.length, selector; i < l; i++) {
+      selector = new Selector(expressions[i].strip());
+      h.concat(results, selector.findElements(element));
+    }
+    return (l > 1) ? h.unique(results) : results;
   }
-}
+});
 
-/*--------------------------------------------------------------------------*/
+if (Prototype.Browser.IE) {
+  // IE returns comment nodes on getElementsByTagName("*").
+  // Filter them out.
+  Selector.handlers.concat = function(a, b) {
+    for (var i = 0, node; node = b[i]; i++)
+      if (node.tagName !== "!") a.push(node);
+    return a;
+  };
+}
 
+function $$() {
+  return Selector.findChildElements(document, $A(arguments));
+}
 var Form = {
-  serialize: function(form) {
-    var elements = Form.getElements($(form));
-    var queryComponents = new Array();
+  reset: function(form) {
+    $(form).reset();
+    return form;
+  },
+
+  serializeElements: function(elements, options) {
+    if (typeof options != 'object') options = { hash: !!options };
+    else if (Object.isUndefined(options.hash)) options.hash = true;
+    var key, value, submitted = false, submit = options.submit;
+
+    var data = elements.inject({ }, function(result, element) {
+      if (!element.disabled && element.name) {
+        key = element.name; value = $(element).getValue();
+        if (value != null && (element.type != 'submit' || (!submitted &&
+            submit !== false && (!submit || key == submit) && (submitted = true)))) {
+          if (key in result) {
+            // a key is already present; construct an array of values
+            if (!Object.isArray(result[key])) result[key] = [result[key]];
+            result[key].push(value);
+          }
+          else result[key] = value;
+        }
+      }
+      return result;
+    });
 
-    for (var i = 0; i < elements.length; i++) {
-      var queryComponent = Form.Element.serialize(elements[i]);
-      if (queryComponent)
-        queryComponents.push(queryComponent);
-    }
+    return options.hash ? data : Object.toQueryString(data);
+  }
+};
 
-    return queryComponents.join('&');
+Form.Methods = {
+  serialize: function(form, options) {
+    return Form.serializeElements(Form.getElements(form), options);
   },
 
   getElements: function(form) {
-    form = $(form);
-    var elements = new Array();
-
-    for (tagName in Form.Element.Serializers) {
-      var tagElements = form.getElementsByTagName(tagName);
-      for (var j = 0; j < tagElements.length; j++)
-        elements.push(tagElements[j]);
-    }
-    return elements;
+    return $A($(form).getElementsByTagName('*')).inject([],
+      function(elements, child) {
+        if (Form.Element.Serializers[child.tagName.toLowerCase()])
+          elements.push(Element.extend(child));
+        return elements;
+      }
+    );
   },
 
   getInputs: function(form, typeName, name) {
     form = $(form);
     var inputs = form.getElementsByTagName('input');
 
-    if (!typeName && !name)
-      return inputs;
+    if (!typeName && !name) return $A(inputs).map(Element.extend);
 
-    var matchingInputs = new Array();
-    for (var i = 0; i < inputs.length; i++) {
+    for (var i = 0, matchingInputs = [], length = inputs.length; i < length; i++) {
       var input = inputs[i];
-      if ((typeName && input.type != typeName) ||
-          (name && input.name != name))
+      if ((typeName && input.type != typeName) || (name && input.name != name))
         continue;
-      matchingInputs.push(input);
+      matchingInputs.push(Element.extend(input));
     }
 
     return matchingInputs;
   },
 
   disable: function(form) {
-    var elements = Form.getElements(form);
-    for (var i = 0; i < elements.length; i++) {
-      var element = elements[i];
-      element.blur();
-      element.disabled = 'true';
-    }
+    form = $(form);
+    Form.getElements(form).invoke('disable');
+    return form;
   },
 
   enable: function(form) {
-    var elements = Form.getElements(form);
-    for (var i = 0; i < elements.length; i++) {
-      var element = elements[i];
-      element.disabled = '';
-    }
+    form = $(form);
+    Form.getElements(form).invoke('enable');
+    return form;
   },
 
   findFirstElement: function(form) {
-    return Form.getElements(form).find(function(element) {
-      return element.type != 'hidden' && !element.disabled &&
-        ['input', 'select', 'textarea'].include(element.tagName.toLowerCase());
+    var elements = $(form).getElements().findAll(function(element) {
+      return 'hidden' != element.type && !element.disabled;
+    });
+    var firstByIndex = elements.findAll(function(element) {
+      return element.hasAttribute('tabIndex') && element.tabIndex >= 0;
+    }).sortBy(function(element) { return element.tabIndex }).first();
+
+    return firstByIndex ? firstByIndex : elements.find(function(element) {
+      return ['input', 'select', 'textarea'].include(element.tagName.toLowerCase());
     });
   },
 
   focusFirstElement: function(form) {
-    Field.activate(Form.findFirstElement(form));
+    form = $(form);
+    form.findFirstElement().activate();
+    return form;
   },
 
-  reset: function(form) {
-    $(form).reset();
+  request: function(form, options) {
+    form = $(form), options = Object.clone(options || { });
+
+    var params = options.parameters, action = form.readAttribute('action') || '';
+    if (action.blank()) action = window.location.href;
+    options.parameters = form.serialize(true);
+
+    if (params) {
+      if (Object.isString(params)) params = params.toQueryParams();
+      Object.extend(options.parameters, params);
+    }
+
+    if (form.hasAttribute('method') && !options.method)
+      options.method = form.method;
+
+    return new Ajax.Request(action, options);
   }
-}
+};
+
+/*--------------------------------------------------------------------------*/
 
 Form.Element = {
+  focus: function(element) {
+    $(element).focus();
+    return element;
+  },
+
+  select: function(element) {
+    $(element).select();
+    return element;
+  }
+};
+
+Form.Element.Methods = {
   serialize: function(element) {
     element = $(element);
+    if (!element.disabled && element.name) {
+      var value = element.getValue();
+      if (value != undefined) {
+        var pair = { };
+        pair[element.name] = value;
+        return Object.toQueryString(pair);
+      }
+    }
+    return '';
+  },
+
+  getValue: function(element) {
+    element = $(element);
     var method = element.tagName.toLowerCase();
-    var parameter = Form.Element.Serializers[method](element);
+    return Form.Element.Serializers[method](element);
+  },
 
-    if (parameter) {
-      var key = encodeURIComponent(parameter[0]);
-      if (key.length == 0) return;
+  setValue: function(element, value) {
+    element = $(element);
+    var method = element.tagName.toLowerCase();
+    Form.Element.Serializers[method](element, value);
+    return element;
+  },
 
-      if (parameter[1].constructor != Array)
-        parameter[1] = [parameter[1]];
+  clear: function(element) {
+    $(element).value = '';
+    return element;
+  },
 
-      return parameter[1].map(function(value) {
-        return key + '=' + encodeURIComponent(value);
-      }).join('&');
-    }
+  present: function(element) {
+    return $(element).value != '';
   },
 
-  getValue: function(element) {
+  activate: function(element) {
     element = $(element);
-    var method = element.tagName.toLowerCase();
-    var parameter = Form.Element.Serializers[method](element);
+    try {
+      element.focus();
+      if (element.select && (element.tagName.toLowerCase() != 'input' ||
+          !['button', 'reset', 'submit'].include(element.type)))
+        element.select();
+    } catch (e) { }
+    return element;
+  },
 
-    if (parameter)
-      return parameter[1];
+  disable: function(element) {
+    element = $(element);
+    element.blur();
+    element.disabled = true;
+    return element;
+  },
+
+  enable: function(element) {
+    element = $(element);
+    element.disabled = false;
+    return element;
   }
-}
+};
+
+/*--------------------------------------------------------------------------*/
+
+var Field = Form.Element;
+var $F = Form.Element.Methods.getValue;
+
+/*--------------------------------------------------------------------------*/
 
 Form.Element.Serializers = {
-  input: function(element) {
+  input: function(element, value) {
     switch (element.type.toLowerCase()) {
-      case 'submit':
-      case 'hidden':
-      case 'password':
-      case 'text':
-        return Form.Element.Serializers.textarea(element);
       case 'checkbox':
       case 'radio':
-        return Form.Element.Serializers.inputSelector(element);
+        return Form.Element.Serializers.inputSelector(element, value);
+      default:
+        return Form.Element.Serializers.textarea(element, value);
     }
-    return false;
   },
 
-  inputSelector: function(element) {
-    if (element.checked)
-      return [element.name, element.value];
+  inputSelector: function(element, value) {
+    if (Object.isUndefined(value)) return element.checked ? element.value : null;
+    else element.checked = !!value;
   },
 
-  textarea: function(element) {
-    return [element.name, element.value];
+  textarea: function(element, value) {
+    if (Object.isUndefined(value)) return element.value;
+    else element.value = value;
   },
 
-  select: function(element) {
-    return Form.Element.Serializers[element.type == 'select-one' ?
-      'selectOne' : 'selectMany'](element);
+  select: function(element, index) {
+    if (Object.isUndefined(index))
+      return this[element.type == 'select-one' ?
+        'selectOne' : 'selectMany'](element);
+    else {
+      var opt, value, single = !Object.isArray(index);
+      for (var i = 0, length = element.length; i < length; i++) {
+        opt = element.options[i];
+        value = this.optionValue(opt);
+        if (single) {
+          if (value == index) {
+            opt.selected = true;
+            return;
+          }
+        }
+        else opt.selected = index.include(value);
+      }
+    }
   },
 
   selectOne: function(element) {
-    var value = '', opt, index = element.selectedIndex;
-    if (index >= 0) {
-      opt = element.options[index];
-      value = opt.value;
-      if (!value && !('value' in opt))
-        value = opt.text;
-    }
-    return [element.name, value];
+    var index = element.selectedIndex;
+    return index >= 0 ? this.optionValue(element.options[index]) : null;
   },
 
   selectMany: function(element) {
-    var value = new Array();
-    for (var i = 0; i < element.length; i++) {
+    var values, length = element.length;
+    if (!length) return null;
+
+    for (var i = 0, values = []; i < length; i++) {
       var opt = element.options[i];
-      if (opt.selected) {
-        var optValue = opt.value;
-        if (!optValue && !('value' in opt))
-          optValue = opt.text;
-        value.push(optValue);
-      }
+      if (opt.selected) values.push(this.optionValue(opt));
     }
-    return [element.name, value];
-  }
-}
-
-/*--------------------------------------------------------------------------*/
+    return values;
+  },
 
-var $F = Form.Element.getValue;
+  optionValue: function(opt) {
+    // extend element because hasAttribute may not be native
+    return Element.extend(opt).hasAttribute('value') ? opt.value : opt.text;
+  }
+};
 
 /*--------------------------------------------------------------------------*/
 
-Abstract.TimedObserver = function() {}
-Abstract.TimedObserver.prototype = {
-  initialize: function(element, frequency, callback) {
-    this.frequency = frequency;
+Abstract.TimedObserver = Class.create(PeriodicalExecuter, {
+  initialize: function($super, element, frequency, callback) {
+    $super(callback, frequency);
     this.element   = $(element);
-    this.callback  = callback;
-
     this.lastValue = this.getValue();
-    this.registerCallback();
   },
 
-  registerCallback: function() {
-    setInterval(this.onTimerEvent.bind(this), this.frequency * 1000);
-  },
-
-  onTimerEvent: function() {
+  execute: function() {
     var value = this.getValue();
-    if (this.lastValue != value) {
+    if (Object.isString(this.lastValue) && Object.isString(value) ?
+        this.lastValue != value : String(this.lastValue) != String(value)) {
       this.callback(this.element, value);
       this.lastValue = value;
     }
   }
-}
+});
 
-Form.Element.Observer = Class.create();
-Form.Element.Observer.prototype = Object.extend(new Abstract.TimedObserver(), {
+Form.Element.Observer = Class.create(Abstract.TimedObserver, {
   getValue: function() {
     return Form.Element.getValue(this.element);
   }
 });
 
-Form.Observer = Class.create();
-Form.Observer.prototype = Object.extend(new Abstract.TimedObserver(), {
+Form.Observer = Class.create(Abstract.TimedObserver, {
   getValue: function() {
     return Form.serialize(this.element);
   }
@@ -1586,8 +3611,7 @@ Form.Observer.prototype = Object.extend(new Abstract.TimedObserver(), {
 
 /*--------------------------------------------------------------------------*/
 
-Abstract.EventObserver = function() {}
-Abstract.EventObserver.prototype = {
+Abstract.EventObserver = Class.create({
   initialize: function(element, callback) {
     this.element  = $(element);
     this.callback = callback;
@@ -1608,9 +3632,7 @@ Abstract.EventObserver.prototype = {
   },
 
   registerFormCallbacks: function() {
-    var elements = Form.getElements(this.element);
-    for (var i = 0; i < elements.length; i++)
-      this.registerCallback(elements[i]);
+    Form.getElements(this.element).each(this.registerCallback, this);
   },
 
   registerCallback: function(element) {
@@ -1620,34 +3642,26 @@ Abstract.EventObserver.prototype = {
         case 'radio':
           Event.observe(element, 'click', this.onElementEvent.bind(this));
           break;
-        case 'password':
-        case 'text':
-        case 'textarea':
-        case 'select-one':
-        case 'select-multiple':
+        default:
           Event.observe(element, 'change', this.onElementEvent.bind(this));
           break;
       }
     }
   }
-}
+});
 
-Form.Element.EventObserver = Class.create();
-Form.Element.EventObserver.prototype = Object.extend(new Abstract.EventObserver(), {
+Form.Element.EventObserver = Class.create(Abstract.EventObserver, {
   getValue: function() {
     return Form.Element.getValue(this.element);
   }
 });
 
-Form.EventObserver = Class.create();
-Form.EventObserver.prototype = Object.extend(new Abstract.EventObserver(), {
+Form.EventObserver = Class.create(Abstract.EventObserver, {
   getValue: function() {
     return Form.serialize(this.element);
   }
 });
-if (!window.Event) {
-  var Event = new Object();
-}
+if (!window.Event) var Event = { };
 
 Object.extend(Event, {
   KEY_BACKSPACE: 8,
@@ -1659,99 +3673,343 @@ Object.extend(Event, {
   KEY_RIGHT:    39,
   KEY_DOWN:     40,
   KEY_DELETE:   46,
+  KEY_HOME:     36,
+  KEY_END:      35,
+  KEY_PAGEUP:   33,
+  KEY_PAGEDOWN: 34,
+  KEY_INSERT:   45,
 
-  element: function(event) {
-    return event.target || event.srcElement;
-  },
+  cache: { },
 
-  isLeftClick: function(event) {
-    return (((event.which) && (event.which == 1)) ||
-            ((event.button) && (event.button == 1)));
-  },
+  relatedTarget: function(event) {
+    var element;
+    switch(event.type) {
+      case 'mouseover': element = event.fromElement; break;
+      case 'mouseout':  element = event.toElement;   break;
+      default: return null;
+    }
+    return Element.extend(element);
+  }
+});
 
-  pointerX: function(event) {
-    return event.pageX || (event.clientX +
-      (document.documentElement.scrollLeft || document.body.scrollLeft));
-  },
+Event.Methods = (function() {
+  var isButton;
+
+  if (Prototype.Browser.IE) {
+    var buttonMap = { 0: 1, 1: 4, 2: 2 };
+    isButton = function(event, code) {
+      return event.button == buttonMap[code];
+    };
+
+  } else if (Prototype.Browser.WebKit) {
+    isButton = function(event, code) {
+      switch (code) {
+        case 0: return event.which == 1 && !event.metaKey;
+        case 1: return event.which == 1 && event.metaKey;
+        default: return false;
+      }
+    };
 
-  pointerY: function(event) {
-    return event.pageY || (event.clientY +
-      (document.documentElement.scrollTop || document.body.scrollTop));
-  },
+  } else {
+    isButton = function(event, code) {
+      return event.which ? (event.which === code + 1) : (event.button === code);
+    };
+  }
 
-  stop: function(event) {
-    if (event.preventDefault) {
+  return {
+    isLeftClick:   function(event) { return isButton(event, 0) },
+    isMiddleClick: function(event) { return isButton(event, 1) },
+    isRightClick:  function(event) { return isButton(event, 2) },
+
+    element: function(event) {
+      var node = Event.extend(event).target;
+      return Element.extend(node.nodeType == Node.TEXT_NODE ? node.parentNode : node);
+    },
+
+    findElement: function(event, expression) {
+      var element = Event.element(event);
+      if (!expression) return element;
+      var elements = [element].concat(element.ancestors());
+      return Selector.findElement(elements, expression, 0);
+    },
+
+    pointer: function(event) {
+      return {
+        x: event.pageX || (event.clientX +
+          (document.documentElement.scrollLeft || document.body.scrollLeft)),
+        y: event.pageY || (event.clientY +
+          (document.documentElement.scrollTop || document.body.scrollTop))
+      };
+    },
+
+    pointerX: function(event) { return Event.pointer(event).x },
+    pointerY: function(event) { return Event.pointer(event).y },
+
+    stop: function(event) {
+      Event.extend(event);
       event.preventDefault();
       event.stopPropagation();
-    } else {
-      event.returnValue = false;
-      event.cancelBubble = true;
+      event.stopped = true;
     }
-  },
+  };
+})();
 
-  // find the first node with the given tagName, starting from the
-  // node the event was triggered on; traverses the DOM upwards
-  findElement: function(event, tagName) {
-    var element = Event.element(event);
-    while (element.parentNode && (!element.tagName ||
-        (element.tagName.toUpperCase() != tagName.toUpperCase())))
-      element = element.parentNode;
-    return element;
-  },
+Event.extend = (function() {
+  var methods = Object.keys(Event.Methods).inject({ }, function(m, name) {
+    m[name] = Event.Methods[name].methodize();
+    return m;
+  });
+
+  if (Prototype.Browser.IE) {
+    Object.extend(methods, {
+      stopPropagation: function() { this.cancelBubble = true },
+      preventDefault:  function() { this.returnValue = false },
+      inspect: function() { return "[object Event]" }
+    });
+
+    return function(event) {
+      if (!event) return false;
+      if (event._extendedByPrototype) return event;
+
+      event._extendedByPrototype = Prototype.emptyFunction;
+      var pointer = Event.pointer(event);
+      Object.extend(event, {
+        target: event.srcElement,
+        relatedTarget: Event.relatedTarget(event),
+        pageX:  pointer.x,
+        pageY:  pointer.y
+      });
+      return Object.extend(event, methods);
+    };
+
+  } else {
+    Event.prototype = Event.prototype || document.createEvent("HTMLEvents").__proto__;
+    Object.extend(Event.prototype, methods);
+    return Prototype.K;
+  }
+})();
+
+Object.extend(Event, (function() {
+  var cache = Event.cache;
+
+  function getEventID(element) {
+    if (element._eventID) return element._eventID;
+    arguments.callee.id = arguments.callee.id || 1;
+    return element._eventID = ++arguments.callee.id;
+  }
+
+  function getDOMEventName(eventName) {
+    if (eventName && eventName.include(':')) return "dataavailable";
+    return eventName;
+  }
+
+  function getCacheForID(id) {
+    return cache[id] = cache[id] || { };
+  }
+
+  function getWrappersForEventName(id, eventName) {
+    var c = getCacheForID(id);
+    return c[eventName] = c[eventName] || [];
+  }
+
+  function createWrapper(element, eventName, handler) {
+    var id = getEventID(element);
+    var c = getWrappersForEventName(id, eventName);
+    if (c.pluck("handler").include(handler)) return false;
+
+    var wrapper = function(event) {
+      if (!Event || !Event.extend ||
+        (event.eventName && event.eventName != eventName))
+          return false;
+
+      Event.extend(event);
+      handler.call(element, event);
+    };
+
+    wrapper.handler = handler;
+    c.push(wrapper);
+    return wrapper;
+  }
+
+  function findWrapper(id, eventName, handler) {
+    var c = getWrappersForEventName(id, eventName);
+    return c.find(function(wrapper) { return wrapper.handler == handler });
+  }
+
+  function destroyWrapper(id, eventName, handler) {
+    var c = getCacheForID(id);
+    if (!c[eventName]) return false;
+    c[eventName] = c[eventName].without(findWrapper(id, eventName, handler));
+  }
+
+  function destroyCache() {
+    for (var id in cache)
+      for (var eventName in cache[id])
+        cache[id][eventName] = null;
+  }
+
+  if (window.attachEvent) {
+    window.attachEvent("onunload", destroyCache);
+  }
+
+  return {
+    observe: function(element, eventName, handler) {
+      element = $(element);
+      var name = getDOMEventName(eventName);
+
+      var wrapper = createWrapper(element, eventName, handler);
+      if (!wrapper) return element;
+
+      if (element.addEventListener) {
+        element.addEventListener(name, wrapper, false);
+      } else {
+        element.attachEvent("on" + name, wrapper);
+      }
 
-  observers: false,
+      return element;
+    },
 
-  _observeAndCache: function(element, name, observer, useCapture) {
-    if (!this.observers) this.observers = [];
-    if (element.addEventListener) {
-      this.observers.push([element, name, observer, useCapture]);
-      element.addEventListener(name, observer, useCapture);
-    } else if (element.attachEvent) {
-      this.observers.push([element, name, observer, useCapture]);
-      element.attachEvent('on' + name, observer);
+    stopObserving: function(element, eventName, handler) {
+      element = $(element);
+      var id = getEventID(element), name = getDOMEventName(eventName);
+
+      if (!handler && eventName) {
+        getWrappersForEventName(id, eventName).each(function(wrapper) {
+          element.stopObserving(eventName, wrapper.handler);
+        });
+        return element;
+
+      } else if (!eventName) {
+        Object.keys(getCacheForID(id)).each(function(eventName) {
+          element.stopObserving(eventName);
+        });
+        return element;
+      }
+
+      var wrapper = findWrapper(id, eventName, handler);
+      if (!wrapper) return element;
+
+      if (element.removeEventListener) {
+        element.removeEventListener(name, wrapper, false);
+      } else {
+        element.detachEvent("on" + name, wrapper);
+      }
+
+      destroyWrapper(id, eventName, handler);
+
+      return element;
+    },
+
+    fire: function(element, eventName, memo) {
+      element = $(element);
+      if (element == document && document.createEvent && !element.dispatchEvent)
+        element = document.documentElement;
+
+      var event;
+      if (document.createEvent) {
+        event = document.createEvent("HTMLEvents");
+        event.initEvent("dataavailable", true, true);
+      } else {
+        event = document.createEventObject();
+        event.eventType = "ondataavailable";
+      }
+
+      event.eventName = eventName;
+      event.memo = memo || { };
+
+      if (document.createEvent) {
+        element.dispatchEvent(event);
+      } else {
+        element.fireEvent(event.eventType, event);
+      }
+
+      return Event.extend(event);
     }
-  },
+  };
+})());
+
+Object.extend(Event, Event.Methods);
+
+Element.addMethods({
+  fire:          Event.fire,
+  observe:       Event.observe,
+  stopObserving: Event.stopObserving
+});
+
+Object.extend(document, {
+  fire:          Element.Methods.fire.methodize(),
+  observe:       Element.Methods.observe.methodize(),
+  stopObserving: Element.Methods.stopObserving.methodize(),
+  loaded:        false
+});
+
+(function() {
+  /* Support for the DOMContentLoaded event is based on work by Dan Webb,
+     Matthias Miller, Dean Edwards and John Resig. */
 
-  unloadCache: function() {
-    if (!Event.observers) return;
-    for (var i = 0; i < Event.observers.length; i++) {
-      Event.stopObserving.apply(this, Event.observers[i]);
-      Event.observers[i][0] = null;
+  var timer;
+
+  function fireContentLoadedEvent() {
+    if (document.loaded) return;
+    if (timer) window.clearInterval(timer);
+    document.fire("dom:loaded");
+    document.loaded = true;
+  }
+
+  if (document.addEventListener) {
+    if (Prototype.Browser.WebKit) {
+      timer = window.setInterval(function() {
+        if (/loaded|complete/.test(document.readyState))
+          fireContentLoadedEvent();
+      }, 0);
+
+      Event.observe(window, "load", fireContentLoadedEvent);
+
+    } else {
+      document.addEventListener("DOMContentLoaded",
+        fireContentLoadedEvent, false);
     }
-    Event.observers = false;
-  },
 
-  observe: function(element, name, observer, useCapture) {
-    var element = $(element);
-    useCapture = useCapture || false;
+  } else {
+    document.write("<script id=__onDOMContentLoaded defer src=//:><\/script>");
+    $("__onDOMContentLoaded").onreadystatechange = function() {
+      if (this.readyState == "complete") {
+        this.onreadystatechange = null;
+        fireContentLoadedEvent();
+      }
+    };
+  }
+})();
+/*------------------------------- DEPRECATED -------------------------------*/
+
+Hash.toQueryString = Object.toQueryString;
+
+var Toggle = { display: Element.toggle };
 
-    if (name == 'keypress' &&
-        (navigator.appVersion.match(/Konqueror|Safari|KHTML/)
-        || element.attachEvent))
-      name = 'keydown';
+Element.Methods.childOf = Element.Methods.descendantOf;
 
-    this._observeAndCache(element, name, observer, useCapture);
+var Insertion = {
+  Before: function(element, content) {
+    return Element.insert(element, {before:content});
   },
 
-  stopObserving: function(element, name, observer, useCapture) {
-    var element = $(element);
-    useCapture = useCapture || false;
+  Top: function(element, content) {
+    return Element.insert(element, {top:content});
+  },
 
-    if (name == 'keypress' &&
-        (navigator.appVersion.match(/Konqueror|Safari|KHTML/)
-        || element.detachEvent))
-      name = 'keydown';
+  Bottom: function(element, content) {
+    return Element.insert(element, {bottom:content});
+  },
 
-    if (element.removeEventListener) {
-      element.removeEventListener(name, observer, useCapture);
-    } else if (element.detachEvent) {
-      element.detachEvent('on' + name, observer);
-    }
+  After: function(element, content) {
+    return Element.insert(element, {after:content});
   }
-});
+};
 
-/* prevent memory leaks in IE */
-Event.observe(window, 'unload', Event.unloadCache, false);
+var $continue = new Error('"throw $continue" is deprecated, use "return" instead');
+
+// This should be moved to script.aculo.us; notice the deprecated methods
+// further below, that map to the newer Element methods.
 var Position = {
   // set to true if needed, warning: firefox performance problems
   // NOT neeeded for page scrolling, only if draggable contained in
@@ -1771,58 +4029,13 @@ var Position = {
                 || 0;
   },
 
-  realOffset: function(element) {
-    var valueT = 0, valueL = 0;
-    do {
-      valueT += element.scrollTop  || 0;
-      valueL += element.scrollLeft || 0;
-      element = element.parentNode;
-    } while (element);
-    return [valueL, valueT];
-  },
-
-  cumulativeOffset: function(element) {
-    var valueT = 0, valueL = 0;
-    do {
-      valueT += element.offsetTop  || 0;
-      valueL += element.offsetLeft || 0;
-      element = element.offsetParent;
-    } while (element);
-    return [valueL, valueT];
-  },
-
-  positionedOffset: function(element) {
-    var valueT = 0, valueL = 0;
-    do {
-      valueT += element.offsetTop  || 0;
-      valueL += element.offsetLeft || 0;
-      element = element.offsetParent;
-      if (element) {
-        p = Element.getStyle(element, 'position');
-        if (p == 'relative' || p == 'absolute') break;
-      }
-    } while (element);
-    return [valueL, valueT];
-  },
-
-  offsetParent: function(element) {
-    if (element.offsetParent) return element.offsetParent;
-    if (element == document.body) return element;
-
-    while ((element = element.parentNode) && element != document.body)
-      if (Element.getStyle(element, 'position') != 'static')
-        return element;
-
-    return document.body;
-  },
-
   // caches x/y coordinate pair to use with overlap
   within: function(element, x, y) {
     if (this.includeScrollOffsets)
       return this.withinIncludingScrolloffsets(element, x, y);
     this.xcomp = x;
     this.ycomp = y;
-    this.offset = this.cumulativeOffset(element);
+    this.offset = Element.cumulativeOffset(element);
 
     return (y >= this.offset[1] &&
             y <  this.offset[1] + element.offsetHeight &&
@@ -1831,11 +4044,11 @@ var Position = {
   },
 
   withinIncludingScrolloffsets: function(element, x, y) {
-    var offsetcache = this.realOffset(element);
+    var offsetcache = Element.cumulativeScrollOffset(element);
 
     this.xcomp = x + offsetcache[0] - this.deltaX;
     this.ycomp = y + offsetcache[1] - this.deltaY;
-    this.offset = this.cumulativeOffset(element);
+    this.offset = Element.cumulativeOffset(element);
 
     return (this.ycomp >= this.offset[1] &&
             this.ycomp <  this.offset[1] + element.offsetHeight &&
@@ -1854,132 +4067,104 @@ var Position = {
         element.offsetWidth;
   },
 
-  clone: function(source, target) {
-    source = $(source);
-    target = $(target);
-    target.style.position = 'absolute';
-    var offsets = this.cumulativeOffset(source);
-    target.style.top    = offsets[1] + 'px';
-    target.style.left   = offsets[0] + 'px';
-    target.style.width  = source.offsetWidth + 'px';
-    target.style.height = source.offsetHeight + 'px';
-  },
+  // Deprecation layer -- use newer Element methods now (1.5.2).
 
-  page: function(forElement) {
-    var valueT = 0, valueL = 0;
+  cumulativeOffset: Element.Methods.cumulativeOffset,
 
-    var element = forElement;
-    do {
-      valueT += element.offsetTop  || 0;
-      valueL += element.offsetLeft || 0;
+  positionedOffset: Element.Methods.positionedOffset,
 
-      // Safari fix
-      if (element.offsetParent==document.body)
-        if (Element.getStyle(element,'position')=='absolute') break;
+  absolutize: function(element) {
+    Position.prepare();
+    return Element.absolutize(element);
+  },
 
-    } while (element = element.offsetParent);
+  relativize: function(element) {
+    Position.prepare();
+    return Element.relativize(element);
+  },
 
-    element = forElement;
-    do {
-      valueT -= element.scrollTop  || 0;
-      valueL -= element.scrollLeft || 0;
-    } while (element = element.parentNode);
+  realOffset: Element.Methods.cumulativeScrollOffset,
 
-    return [valueL, valueT];
-  },
+  offsetParent: Element.Methods.getOffsetParent,
 
-  clone: function(source, target) {
-    var options = Object.extend({
-      setLeft:    true,
-      setTop:     true,
-      setWidth:   true,
-      setHeight:  true,
-      offsetTop:  0,
-      offsetLeft: 0
-    }, arguments[2] || {})
+  page: Element.Methods.viewportOffset,
 
-    // find page position of source
-    source = $(source);
-    var p = Position.page(source);
+  clone: function(source, target, options) {
+    options = options || { };
+    return Element.clonePosition(target, source, options);
+  }
+};
 
-    // find coordinate system to use
-    target = $(target);
-    var delta = [0, 0];
-    var parent = null;
-    // delta [0,0] will do fine with position: fixed elements,
-    // position:absolute needs offsetParent deltas
-    if (Element.getStyle(target,'position') == 'absolute') {
-      parent = Position.offsetParent(target);
-      delta = Position.page(parent);
-    }
+/*--------------------------------------------------------------------------*/
 
-    // correct by body offsets (fixes Safari)
-    if (parent == document.body) {
-      delta[0] -= document.body.offsetLeft;
-      delta[1] -= document.body.offsetTop;
+if (!document.getElementsByClassName) document.getElementsByClassName = function(instanceMethods){
+  function iter(name) {
+    return name.blank() ? null : "[contains(concat(' ', @class, ' '), ' " + name + " ')]";
+  }
+
+  instanceMethods.getElementsByClassName = Prototype.BrowserFeatures.XPath ?
+  function(element, className) {
+    className = className.toString().strip();
+    var cond = /\s/.test(className) ? $w(className).map(iter).join('') : iter(className);
+    return cond ? document._getElementsByXPath('.//*' + cond, element) : [];
+  } : function(element, className) {
+    className = className.toString().strip();
+    var elements = [], classNames = (/\s/.test(className) ? $w(className) : null);
+    if (!classNames && !className) return elements;
+
+    var nodes = $(element).getElementsByTagName('*');
+    className = ' ' + className + ' ';
+
+    for (var i = 0, child, cn; child = nodes[i]; i++) {
+      if (child.className && (cn = ' ' + child.className + ' ') && (cn.include(className) ||
+          (classNames && classNames.all(function(name) {
+            return !name.toString().blank() && cn.include(' ' + name + ' ');
+          }))))
+        elements.push(Element.extend(child));
     }
+    return elements;
+  };
 
-    // set position
-    if(options.setLeft)   target.style.left  = (p[0] - delta[0] + options.offsetLeft) + 'px';
-    if(options.setTop)    target.style.top   = (p[1] - delta[1] + options.offsetTop) + 'px';
-    if(options.setWidth)  target.style.width = source.offsetWidth + 'px';
-    if(options.setHeight) target.style.height = source.offsetHeight + 'px';
-  },
+  return function(className, parentElement) {
+    return $(parentElement || document.body).getElementsByClassName(className);
+  };
+}(Element.Methods);
 
-  absolutize: function(element) {
-    element = $(element);
-    if (element.style.position == 'absolute') return;
-    Position.prepare();
+/*--------------------------------------------------------------------------*/
 
-    var offsets = Position.positionedOffset(element);
-    var top     = offsets[1];
-    var left    = offsets[0];
-    var width   = element.clientWidth;
-    var height  = element.clientHeight;
+Element.ClassNames = Class.create();
+Element.ClassNames.prototype = {
+  initialize: function(element) {
+    this.element = $(element);
+  },
 
-    element._originalLeft   = left - parseFloat(element.style.left  || 0);
-    element._originalTop    = top  - parseFloat(element.style.top || 0);
-    element._originalWidth  = element.style.width;
-    element._originalHeight = element.style.height;
+  _each: function(iterator) {
+    this.element.className.split(/\s+/).select(function(name) {
+      return name.length > 0;
+    })._each(iterator);
+  },
 
-    element.style.position = 'absolute';
-    element.style.top    = top + 'px';;
-    element.style.left   = left + 'px';;
-    element.style.width  = width + 'px';;
-    element.style.height = height + 'px';;
+  set: function(className) {
+    this.element.className = className;
   },
 
-  relativize: function(element) {
-    element = $(element);
-    if (element.style.position == 'relative') return;
-    Position.prepare();
+  add: function(classNameToAdd) {
+    if (this.include(classNameToAdd)) return;
+    this.set($A(this).concat(classNameToAdd).join(' '));
+  },
 
-    element.style.position = 'relative';
-    var top  = parseFloat(element.style.top  || 0) - (element._originalTop || 0);
-    var left = parseFloat(element.style.left || 0) - (element._originalLeft || 0);
+  remove: function(classNameToRemove) {
+    if (!this.include(classNameToRemove)) return;
+    this.set($A(this).without(classNameToRemove).join(' '));
+  },
 
-    element.style.top    = top + 'px';
-    element.style.left   = left + 'px';
-    element.style.height = element._originalHeight;
-    element.style.width  = element._originalWidth;
+  toString: function() {
+    return $A(this).join(' ');
   }
-}
+};
 
-// Safari returns margins on body which is incorrect if the child is absolutely
-// positioned.  For performance reasons, redefine Position.cumulativeOffset for
-// KHTML/WebKit only.
-if (/Konqueror|Safari|KHTML/.test(navigator.userAgent)) {
-  Position.cumulativeOffset = function(element) {
-    var valueT = 0, valueL = 0;
-    do {
-      valueT += element.offsetTop  || 0;
-      valueL += element.offsetLeft || 0;
-      if (element.offsetParent == document.body)
-        if (Element.getStyle(element, 'position') == 'absolute') break;
+Object.extend(Element.ClassNames.prototype, Enumerable);
 
-      element = element.offsetParent;
-    } while (element);
+/*--------------------------------------------------------------------------*/
 
-    return [valueL, valueT];
-  }
-}
\ No newline at end of file
+Element.addMethods();
\ No newline at end of file
diff --git a/usr/local/www/javascript/scriptaculous/scriptaculous.js b/usr/local/www/javascript/scriptaculous/scriptaculous.js
index 33bc015..6cfe36e 100644
--- a/usr/local/www/javascript/scriptaculous/scriptaculous.js
+++ b/usr/local/www/javascript/scriptaculous/scriptaculous.js
@@ -1,4 +1,6 @@
-// Copyright (c) 2005 Thomas Fuchs (http://script.aculo.us, http://mir.aculo.us)
+// script.aculo.us scriptaculous.js v1.8.1, Thu Jan 03 22:07:12 -0500 2008
+
+// Copyright (c) 2005-2007 Thomas Fuchs (http://script.aculo.us, http://mir.aculo.us)
 // 
 // Permission is hereby granted, free of charge, to any person obtaining
 // a copy of this software and associated documentation files (the
@@ -18,27 +20,36 @@
 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+//
+// For details, see the script.aculo.us web site: http://script.aculo.us/
 
 var Scriptaculous = {
-  Version: '1.6',
+  Version: '1.8.1',
   require: function(libraryName) {
     // inserting via DOM fails in Safari 2.0, so brute force approach
-    document.write('<script type="text/javascript" src="'+libraryName+'"></scr'+'ipt>');
+    document.write('<script type="text/javascript" src="'+libraryName+'"><\/script>');
   },
+  REQUIRED_PROTOTYPE: '1.6.0',
   load: function() {
+    function convertVersionString(versionString){
+      var r = versionString.split('.');
+      return parseInt(r[0])*100000 + parseInt(r[1])*1000 + parseInt(r[2]);
+    }
+ 
     if((typeof Prototype=='undefined') || 
        (typeof Element == 'undefined') || 
        (typeof Element.Methods=='undefined') ||
-       parseFloat(Prototype.Version.split(".")[0] + "." +
-                  Prototype.Version.split(".")[1]) < 1.5)
-       throw("script.aculo.us requires the Prototype JavaScript framework >= 1.5.0");
+       (convertVersionString(Prototype.Version) < 
+        convertVersionString(Scriptaculous.REQUIRED_PROTOTYPE)))
+       throw("script.aculo.us requires the Prototype JavaScript framework >= " +
+        Scriptaculous.REQUIRED_PROTOTYPE);
     
     $A(document.getElementsByTagName("script")).findAll( function(s) {
       return (s.src && s.src.match(/scriptaculous\.js(\?.*)?$/))
     }).each( function(s) {
       var path = s.src.replace(/scriptaculous\.js(\?.*)?$/,'');
       var includes = s.src.match(/\?.*load=([a-z,]*)/);
-      (includes ? includes[1] : 'builder,effects,dragdrop,controls,slider').split(',').each(
+      (includes ? includes[1] : 'builder,effects,dragdrop,controls,slider,sound').split(',').each(
        function(include) { Scriptaculous.require(path+include+'.js') });
     });
   }
diff --git a/usr/local/www/javascript/scriptaculous/slider.js b/usr/local/www/javascript/scriptaculous/slider.js
index c0f1fc0..cc46fe3 100644
--- a/usr/local/www/javascript/scriptaculous/slider.js
+++ b/usr/local/www/javascript/scriptaculous/slider.js
@@ -1,28 +1,11 @@
-// Copyright (c) 2005 Marty Haught, Thomas Fuchs 
-//
-// See http://script.aculo.us for more info
-// 
-// Permission is hereby granted, free of charge, to any person obtaining
-// a copy of this software and associated documentation files (the
-// "Software"), to deal in the Software without restriction, including
-// without limitation the rights to use, copy, modify, merge, publish,
-// distribute, sublicense, and/or sell copies of the Software, and to
-// permit persons to whom the Software is furnished to do so, subject to
-// the following conditions:
-// 
-// The above copyright notice and this permission notice shall be
-// included in all copies or substantial portions of the Software.
+// script.aculo.us slider.js v1.8.1, Thu Jan 03 22:07:12 -0500 2008
+
+// Copyright (c) 2005-2007 Marty Haught, Thomas Fuchs 
 //
-// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
-// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
-// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
-// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
-// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
-// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
-// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+// script.aculo.us is freely distributable under the terms of an MIT-style license.
+// For details, see the script.aculo.us web site: http://script.aculo.us/
 
-if(!Control) var Control = {};
-Control.Slider = Class.create();
+if (!Control) var Control = { };
 
 // options:
 //  axis: 'vertical', or 'horizontal' (default)
@@ -30,18 +13,18 @@ Control.Slider = Class.create();
 // callbacks:
 //  onChange(value)
 //  onSlide(value)
-Control.Slider.prototype = {
+Control.Slider = Class.create({
   initialize: function(handle, track, options) {
     var slider = this;
     
-    if(handle instanceof Array) {
+    if (Object.isArray(handle)) {
       this.handles = handle.collect( function(e) { return $(e) });
     } else {
       this.handles = [$(handle)];
     }
     
     this.track   = $(track);
-    this.options = options || {};
+    this.options = options || { };
 
     this.axis      = this.options.axis || 'horizontal';
     this.increment = this.options.increment || 1;
@@ -64,17 +47,22 @@ Control.Slider.prototype = {
     this.alignY = parseInt(this.options.alignY || '0');
     
     this.trackLength = this.maximumOffset() - this.minimumOffset();
-    this.handleLength = this.isVertical() ? this.handles[0].offsetHeight : this.handles[0].offsetWidth;
+
+    this.handleLength = this.isVertical() ? 
+      (this.handles[0].offsetHeight != 0 ? 
+        this.handles[0].offsetHeight : this.handles[0].style.height.replace(/px$/,"")) : 
+      (this.handles[0].offsetWidth != 0 ? this.handles[0].offsetWidth : 
+        this.handles[0].style.width.replace(/px$/,""));
 
     this.active   = false;
     this.dragging = false;
     this.disabled = false;
 
-    if(this.options.disabled) this.setDisabled();
+    if (this.options.disabled) this.setDisabled();
 
     // Allowed values array
     this.allowedValues = this.options.values ? this.options.values.sortBy(Prototype.K) : false;
-    if(this.allowedValues) {
+    if (this.allowedValues) {
       this.minimum = this.allowedValues.min();
       this.maximum = this.allowedValues.max();
     }
@@ -87,16 +75,15 @@ Control.Slider.prototype = {
     this.handles.each( function(h,i) {
       i = slider.handles.length-1-i;
       slider.setValue(parseFloat(
-        (slider.options.sliderValue instanceof Array ? 
+        (Object.isArray(slider.options.sliderValue) ? 
           slider.options.sliderValue[i] : slider.options.sliderValue) || 
          slider.range.start), i);
-      Element.makePositioned(h); // fix IE
-      Event.observe(h, "mousedown", slider.eventMouseDown);
+      h.makePositioned().observe("mousedown", slider.eventMouseDown);
     });
     
-    Event.observe(this.track, "mousedown", this.eventMouseDown);
-    Event.observe(document, "mouseup", this.eventMouseUp);
-    Event.observe(document, "mousemove", this.eventMouseMove);
+    this.track.observe("mousedown", this.eventMouseDown);
+    document.observe("mouseup", this.eventMouseUp);
+    document.observe("mousemove", this.eventMouseMove);
     
     this.initialized = true;
   },
@@ -116,36 +103,36 @@ Control.Slider.prototype = {
     this.disabled = false;
   },  
   getNearestValue: function(value){
-    if(this.allowedValues){
-      if(value >= this.allowedValues.max()) return(this.allowedValues.max());
-      if(value <= this.allowedValues.min()) return(this.allowedValues.min());
+    if (this.allowedValues){
+      if (value >= this.allowedValues.max()) return(this.allowedValues.max());
+      if (value <= this.allowedValues.min()) return(this.allowedValues.min());
       
       var offset = Math.abs(this.allowedValues[0] - value);
       var newValue = this.allowedValues[0];
       this.allowedValues.each( function(v) {
         var currentOffset = Math.abs(v - value);
-        if(currentOffset <= offset){
+        if (currentOffset <= offset){
           newValue = v;
           offset = currentOffset;
         } 
       });
       return newValue;
     }
-    if(value > this.range.end) return this.range.end;
-    if(value < this.range.start) return this.range.start;
+    if (value > this.range.end) return this.range.end;
+    if (value < this.range.start) return this.range.start;
     return value;
   },
   setValue: function(sliderValue, handleIdx){
-    if(!this.active) {
-      this.activeHandle    = this.handles[handleIdx];
-      this.activeHandleIdx = handleIdx;
+    if (!this.active) {
+      this.activeHandleIdx = handleIdx || 0;
+      this.activeHandle    = this.handles[this.activeHandleIdx];
       this.updateStyles();
     }
     handleIdx = handleIdx || this.activeHandleIdx || 0;
-    if(this.initialized && this.restricted) {
-      if((handleIdx>0) && (sliderValue<this.values[handleIdx-1]))
+    if (this.initialized && this.restricted) {
+      if ((handleIdx>0) && (sliderValue<this.values[handleIdx-1]))
         sliderValue = this.values[handleIdx-1];
-      if((handleIdx < (this.handles.length-1)) && (sliderValue>this.values[handleIdx+1]))
+      if ((handleIdx < (this.handles.length-1)) && (sliderValue>this.values[handleIdx+1]))
         sliderValue = this.values[handleIdx+1];
     }
     sliderValue = this.getNearestValue(sliderValue);
@@ -156,7 +143,7 @@ Control.Slider.prototype = {
       this.translateToPx(sliderValue);
     
     this.drawSpans();
-    if(!this.dragging || !this.event) this.updateFinished();
+    if (!this.dragging || !this.event) this.updateFinished();
   },
   setValueBy: function(delta, handleIdx) {
     this.setValue(this.values[handleIdx || this.activeHandleIdx || 0] + delta, 
@@ -180,25 +167,28 @@ Control.Slider.prototype = {
     return(this.isVertical() ? this.alignY : this.alignX);
   },
   maximumOffset: function(){
-    return(this.isVertical() ?
-      this.track.offsetHeight - this.alignY : this.track.offsetWidth - this.alignX);
+    return(this.isVertical() ? 
+      (this.track.offsetHeight != 0 ? this.track.offsetHeight :
+        this.track.style.height.replace(/px$/,"")) - this.alignY : 
+      (this.track.offsetWidth != 0 ? this.track.offsetWidth : 
+        this.track.style.width.replace(/px$/,"")) - this.alignX);
   },  
   isVertical:  function(){
     return (this.axis == 'vertical');
   },
   drawSpans: function() {
     var slider = this;
-    if(this.spans)
+    if (this.spans)
       $R(0, this.spans.length-1).each(function(r) { slider.setSpan(slider.spans[r], slider.getRange(r)) });
-    if(this.options.startSpan)
+    if (this.options.startSpan)
       this.setSpan(this.options.startSpan,
         $R(0, this.values.length>1 ? this.getRange(0).min() : this.value ));
-    if(this.options.endSpan)
+    if (this.options.endSpan)
       this.setSpan(this.options.endSpan, 
         $R(this.values.length>1 ? this.getRange(this.spans.length-1).max() : this.value, this.maximum));
   },
   setSpan: function(span, range) {
-    if(this.isVertical()) {
+    if (this.isVertical()) {
       span.style.top = this.translateToPx(range.start);
       span.style.height = this.translateToPx(range.end - range.start + this.range.start);
     } else {
@@ -211,13 +201,14 @@ Control.Slider.prototype = {
     Element.addClassName(this.activeHandle, 'selected');
   },
   startDrag: function(event) {
-    if(Event.isLeftClick(event)) {
-      if(!this.disabled){
+    if (Event.isLeftClick(event)) {
+      if (!this.disabled){
         this.active = true;
         
         var handle = Event.element(event);
         var pointer  = [Event.pointerX(event), Event.pointerY(event)];
-        if(handle==this.track) {
+        var track = handle;
+        if (track==this.track) {
           var offsets  = Position.cumulativeOffset(this.track); 
           this.event = event;
           this.setValue(this.translateToValue( 
@@ -230,25 +221,26 @@ Control.Slider.prototype = {
           // find the handle (prevents issues with Safari)
           while((this.handles.indexOf(handle) == -1) && handle.parentNode) 
             handle = handle.parentNode;
-        
-          this.activeHandle    = handle;
-          this.activeHandleIdx = this.handles.indexOf(this.activeHandle);
-          this.updateStyles();
-        
-          var offsets  = Position.cumulativeOffset(this.activeHandle);
-          this.offsetX = (pointer[0] - offsets[0]);
-          this.offsetY = (pointer[1] - offsets[1]);
+            
+          if (this.handles.indexOf(handle)!=-1) {
+            this.activeHandle    = handle;
+            this.activeHandleIdx = this.handles.indexOf(this.activeHandle);
+            this.updateStyles();
+            
+            var offsets  = Position.cumulativeOffset(this.activeHandle);
+            this.offsetX = (pointer[0] - offsets[0]);
+            this.offsetY = (pointer[1] - offsets[1]);
+          }
         }
       }
       Event.stop(event);
     }
   },
   update: function(event) {
-   if(this.active) {
-      if(!this.dragging) this.dragging = true;
+   if (this.active) {
+      if (!this.dragging) this.dragging = true;
       this.draw(event);
-      // fix AppleWebKit rendering
-      if(navigator.appVersion.indexOf('AppleWebKit')>0) window.scrollBy(0,0);
+      if (Prototype.Browser.WebKit) window.scrollBy(0,0);
       Event.stop(event);
    }
   },
@@ -259,11 +251,11 @@ Control.Slider.prototype = {
     pointer[1] -= this.offsetY + offsets[1];
     this.event = event;
     this.setValue(this.translateToValue( this.isVertical() ? pointer[1] : pointer[0] ));
-    if(this.initialized && this.options.onSlide)
+    if (this.initialized && this.options.onSlide)
       this.options.onSlide(this.values.length>1 ? this.values : this.value, this);
   },
   endDrag: function(event) {
-    if(this.active && this.dragging) {
+    if (this.active && this.dragging) {
       this.finishDrag(event, true);
       Event.stop(event);
     }
@@ -276,8 +268,8 @@ Control.Slider.prototype = {
     this.updateFinished();
   },
   updateFinished: function() {
-    if(this.initialized && this.options.onChange) 
+    if (this.initialized && this.options.onChange) 
       this.options.onChange(this.values.length>1 ? this.values : this.value, this);
     this.event = null;
   }
-}
\ No newline at end of file
+});
diff --git a/usr/local/www/javascript/scriptaculous/sound.js b/usr/local/www/javascript/scriptaculous/sound.js
new file mode 100644
index 0000000..eba3843
--- /dev/null
+++ b/usr/local/www/javascript/scriptaculous/sound.js
@@ -0,0 +1,55 @@
+// script.aculo.us sound.js v1.8.1, Thu Jan 03 22:07:12 -0500 2008
+
+// Copyright (c) 2005-2007 Thomas Fuchs (http://script.aculo.us, http://mir.aculo.us)
+//
+// Based on code created by Jules Gravinese (http://www.webveteran.com/)
+//
+// script.aculo.us is freely distributable under the terms of an MIT-style license.
+// For details, see the script.aculo.us web site: http://script.aculo.us/
+
+Sound = {
+  tracks: {},
+  _enabled: true,
+  template:
+    new Template('<embed style="height:0" id="sound_#{track}_#{id}" src="#{url}" loop="false" autostart="true" hidden="true"/>'),
+  enable: function(){
+    Sound._enabled = true;
+  },
+  disable: function(){
+    Sound._enabled = false;
+  },
+  play: function(url){
+    if(!Sound._enabled) return;
+    var options = Object.extend({
+      track: 'global', url: url, replace: false
+    }, arguments[1] || {});
+    
+    if(options.replace && this.tracks[options.track]) {
+      $R(0, this.tracks[options.track].id).each(function(id){
+        var sound = $('sound_'+options.track+'_'+id);
+        sound.Stop && sound.Stop();
+        sound.remove();
+      })
+      this.tracks[options.track] = null;
+    }
+      
+    if(!this.tracks[options.track])
+      this.tracks[options.track] = { id: 0 }
+    else
+      this.tracks[options.track].id++;
+      
+    options.id = this.tracks[options.track].id;
+    $$('body')[0].insert( 
+      Prototype.Browser.IE ? new Element('bgsound',{
+        id: 'sound_'+options.track+'_'+options.id,
+        src: options.url, loop: 1, autostart: true
+      }) : Sound.template.evaluate(options));
+  }
+};
+
+if(Prototype.Browser.Gecko && navigator.userAgent.indexOf("Win") > 0){
+  if(navigator.plugins && $A(navigator.plugins).detect(function(p){ return p.name.indexOf('QuickTime') != -1 }))
+    Sound.template = new Template('<object id="sound_#{track}_#{id}" width="0" height="0" type="audio/mpeg" data="#{url}"/>')
+  else
+    Sound.play = function(){}
+}
diff --git a/usr/local/www/javascript/scriptaculous/unittest.js b/usr/local/www/javascript/scriptaculous/unittest.js
index 7c6d2f8..7eed8a5 100644
--- a/usr/local/www/javascript/scriptaculous/unittest.js
+++ b/usr/local/www/javascript/scriptaculous/unittest.js
@@ -1,38 +1,27 @@
-// Copyright (c) 2005 Thomas Fuchs (http://script.aculo.us, http://mir.aculo.us)
-//           (c) 2005 Jon Tirsen (http://www.tirsen.com)
-//           (c) 2005 Michael Schuerig (http://www.schuerig.de/michael/)
-//
-// Permission is hereby granted, free of charge, to any person obtaining
-// a copy of this software and associated documentation files (the
-// "Software"), to deal in the Software without restriction, including
-// without limitation the rights to use, copy, modify, merge, publish,
-// distribute, sublicense, and/or sell copies of the Software, and to
-// permit persons to whom the Software is furnished to do so, subject to
-// the following conditions:
-// 
-// The above copyright notice and this permission notice shall be
-// included in all copies or substantial portions of the Software.
-// 
-// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
-// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
-// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
-// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
-// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
-// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
-// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+// script.aculo.us unittest.js v1.8.1, Thu Jan 03 22:07:12 -0500 2008
 
+// Copyright (c) 2005-2007 Thomas Fuchs (http://script.aculo.us, http://mir.aculo.us)
+//           (c) 2005-2007 Jon Tirsen (http://www.tirsen.com)
+//           (c) 2005-2007 Michael Schuerig (http://www.schuerig.de/michael/)
+//
+// script.aculo.us is freely distributable under the terms of an MIT-style license.
+// For details, see the script.aculo.us web site: http://script.aculo.us/
 
 // experimental, Firefox-only
 Event.simulateMouse = function(element, eventName) {
   var options = Object.extend({
     pointerX: 0,
     pointerY: 0,
-    buttons: 0
+    buttons:  0,
+    ctrlKey:  false,
+    altKey:   false,
+    shiftKey: false,
+    metaKey:  false
   }, arguments[2] || {});
   var oEvent = document.createEvent("MouseEvents");
   oEvent.initMouseEvent(eventName, true, true, document.defaultView, 
     options.buttons, options.pointerX, options.pointerY, options.pointerX, options.pointerY, 
-    false, false, false, false, 0, $(element));
+    options.ctrlKey, options.altKey, options.shiftKey, options.metaKey, 0, $(element));
   
   if(this.mark) Element.remove(this.mark);
   this.mark = document.createElement('div');
@@ -98,6 +87,7 @@ Test.Unit.Logger.prototype = {
     this.lastLogLine = document.createElement('tr');
     this.statusCell = document.createElement('td');
     this.nameCell = document.createElement('td');
+    this.nameCell.className = "nameCell";
     this.nameCell.appendChild(document.createTextNode(testName));
     this.messageCell = document.createElement('td');
     this.lastLogLine.appendChild(this.statusCell);
@@ -110,6 +100,7 @@ Test.Unit.Logger.prototype = {
     this.lastLogLine.className = status;
     this.statusCell.innerHTML = status;
     this.messageCell.innerHTML = this._toHTML(summary);
+    this.addLinksToResults();
   },
   message: function(message) {
     if (!this.log) return;
@@ -131,6 +122,16 @@ Test.Unit.Logger.prototype = {
   },
   _toHTML: function(txt) {
     return txt.escapeHTML().replace(/\n/g,"<br/>");
+  },
+  addLinksToResults: function(){ 
+    $$("tr.failed .nameCell").each( function(td){ // todo: limit to children of this.log
+      td.title = "Run only this test"
+      Event.observe(td, 'click', function(){ window.location.search = "?tests=" + td.innerHTML;});
+    });
+    $$("tr.passed .nameCell").each( function(td){ // todo: limit to children of this.log
+      td.title = "Run all tests"
+      Event.observe(td, 'click', function(){ window.location.search = "";});
+    });
   }
 }
 
@@ -141,6 +142,7 @@ Test.Unit.Runner.prototype = {
       testLog: 'testlog'
     }, arguments[1] || {});
     this.options.resultsURL = this.parseResultsURLQueryParameter();
+    this.options.tests      = this.parseTestsQueryParameter();
     if (this.options.testLog) {
       this.options.testLog = $(this.options.testLog) || null;
     }
@@ -158,7 +160,11 @@ Test.Unit.Runner.prototype = {
         this.tests = [];
         for(var testcase in testcases) {
           if(/^test/.test(testcase)) {
-            this.tests.push(new Test.Unit.Testcase(testcase, testcases[testcase], testcases["setup"], testcases["teardown"]));
+            this.tests.push(
+               new Test.Unit.Testcase(
+                 this.options.context ? ' -> ' + this.options.titles[testcase] : testcase, 
+                 testcases[testcase], testcases["setup"], testcases["teardown"]
+               ));
           }
         }
       }
@@ -170,6 +176,11 @@ Test.Unit.Runner.prototype = {
   parseResultsURLQueryParameter: function() {
     return window.location.search.parseQuery()["resultsURL"];
   },
+  parseTestsQueryParameter: function(){
+    if (window.location.search.parseQuery()["tests"]){
+        return window.location.search.parseQuery()["tests"].split(',');
+    };
+  },
   // Returns:
   //  "ERROR" if there was an error,
   //  "FAILURE" if there was a failure, or
@@ -229,6 +240,7 @@ Test.Unit.Runner.prototype = {
       errors     +=   this.tests[i].errors;
     }
     return (
+      (this.options.context ? this.options.context + ': ': '') + 
       this.tests.length + " tests, " + 
       assertions + " assertions, " + 
       failures   + " failures, " +
@@ -258,6 +270,9 @@ Test.Unit.Assertions.prototype = {
     this.failures++;
     this.messages.push("Failure: " + message);
   },
+  info: function(message) {
+    this.messages.push("Info: " + message);
+  },
   error: function(error) {
     this.errors++;
     this.messages.push(error.name + ": "+ error.message + "(" + Test.Unit.inspect(error) +")");
@@ -280,6 +295,13 @@ Test.Unit.Assertions.prototype = {
         '", actual "' + Test.Unit.inspect(actual) + '"'); }
     catch(e) { this.error(e); }
   },
+  assertInspect: function(expected, actual) {
+    var message = arguments[2] || "assertInspect";
+    try { (expected == actual.inspect()) ? this.pass() :
+      this.fail(message + ': expected "' + Test.Unit.inspect(expected) + 
+        '", actual "' + Test.Unit.inspect(actual) + '"'); }
+    catch(e) { this.error(e); }
+  },
   assertEnumEqual: function(expected, actual) {
     var message = arguments[2] || "assertEnumEqual";
     try { $A(expected).length == $A(actual).length && 
@@ -294,12 +316,33 @@ Test.Unit.Assertions.prototype = {
       this.fail(message + ': got "' + Test.Unit.inspect(actual) + '"'); }
     catch(e) { this.error(e); }
   },
+  assertIdentical: function(expected, actual) { 
+    var message = arguments[2] || "assertIdentical"; 
+    try { (expected === actual) ? this.pass() : 
+      this.fail(message + ': expected "' + Test.Unit.inspect(expected) +  
+        '", actual "' + Test.Unit.inspect(actual) + '"'); } 
+    catch(e) { this.error(e); } 
+  },
+  assertNotIdentical: function(expected, actual) { 
+    var message = arguments[2] || "assertNotIdentical"; 
+    try { !(expected === actual) ? this.pass() : 
+      this.fail(message + ': expected "' + Test.Unit.inspect(expected) +  
+        '", actual "' + Test.Unit.inspect(actual) + '"'); } 
+    catch(e) { this.error(e); } 
+  },
   assertNull: function(obj) {
     var message = arguments[1] || 'assertNull'
     try { (obj==null) ? this.pass() : 
       this.fail(message + ': got "' + Test.Unit.inspect(obj) + '"'); }
     catch(e) { this.error(e); }
   },
+  assertMatch: function(expected, actual) {
+    var message = arguments[2] || 'assertMatch';
+    var regex = new RegExp(expected);
+    try { (regex.exec(actual)) ? this.pass() :
+      this.fail(message + ' : regex: "' +  Test.Unit.inspect(expected) + ' did not match: ' + Test.Unit.inspect(actual) + '"'); }
+    catch(e) { this.error(e); }
+  },
   assertHidden: function(element) {
     var message = arguments[1] || 'assertHidden';
     this.assertEqual("none", element.style.display, message);
@@ -308,6 +351,22 @@ Test.Unit.Assertions.prototype = {
     var message = arguments[1] || 'assertNotNull';
     this.assert(object != null, message);
   },
+  assertType: function(expected, actual) {
+    var message = arguments[2] || 'assertType';
+    try { 
+      (actual.constructor == expected) ? this.pass() : 
+      this.fail(message + ': expected "' + Test.Unit.inspect(expected) +  
+        '", actual "' + (actual.constructor) + '"'); }
+    catch(e) { this.error(e); }
+  },
+  assertNotOfType: function(expected, actual) {
+    var message = arguments[2] || 'assertNotOfType';
+    try { 
+      (actual.constructor != expected) ? this.pass() : 
+      this.fail(message + ': expected "' + Test.Unit.inspect(expected) +  
+        '", actual "' + (actual.constructor) + '"'); }
+    catch(e) { this.error(e); }
+  },
   assertInstanceOf: function(expected, actual) {
     var message = arguments[2] || 'assertInstanceOf';
     try { 
@@ -322,6 +381,63 @@ Test.Unit.Assertions.prototype = {
       this.fail(message + ": object was an instance of the not expected type"); }
     catch(e) { this.error(e); } 
   },
+  assertRespondsTo: function(method, obj) {
+    var message = arguments[2] || 'assertRespondsTo';
+    try {
+      (obj[method] && typeof obj[method] == 'function') ? this.pass() : 
+      this.fail(message + ": object doesn't respond to [" + method + "]"); }
+    catch(e) { this.error(e); }
+  },
+  assertReturnsTrue: function(method, obj) {
+    var message = arguments[2] || 'assertReturnsTrue';
+    try {
+      var m = obj[method];
+      if(!m) m = obj['is'+method.charAt(0).toUpperCase()+method.slice(1)];
+      m() ? this.pass() : 
+      this.fail(message + ": method returned false"); }
+    catch(e) { this.error(e); }
+  },
+  assertReturnsFalse: function(method, obj) {
+    var message = arguments[2] || 'assertReturnsFalse';
+    try {
+      var m = obj[method];
+      if(!m) m = obj['is'+method.charAt(0).toUpperCase()+method.slice(1)];
+      !m() ? this.pass() : 
+      this.fail(message + ": method returned true"); }
+    catch(e) { this.error(e); }
+  },
+  assertRaise: function(exceptionName, method) {
+    var message = arguments[2] || 'assertRaise';
+    try { 
+      method();
+      this.fail(message + ": exception expected but none was raised"); }
+    catch(e) {
+      ((exceptionName == null) || (e.name==exceptionName)) ? this.pass() : this.error(e); 
+    }
+  },
+  assertElementsMatch: function() {
+    var expressions = $A(arguments), elements = $A(expressions.shift());
+    if (elements.length != expressions.length) {
+      this.fail('assertElementsMatch: size mismatch: ' + elements.length + ' elements, ' + expressions.length + ' expressions');
+      return false;
+    }
+    elements.zip(expressions).all(function(pair, index) {
+      var element = $(pair.first()), expression = pair.last();
+      if (element.match(expression)) return true;
+      this.fail('assertElementsMatch: (in index ' + index + ') expected ' + expression.inspect() + ' but got ' + element.inspect());
+    }.bind(this)) && this.pass();
+  },
+  assertElementMatches: function(element, expression) {
+    this.assertElementsMatch([element], expression);
+  },
+  benchmark: function(operation, iterations) {
+    var startAt = new Date();
+    (iterations || 1).times(operation);
+    var timeTaken = ((new Date())-startAt);
+    this.info((arguments[2] || 'Operation') + ' finished ' + 
+       iterations + ' iterations in ' + (timeTaken/1000)+'s' );
+    return timeTaken;
+  },
   _isVisible: function(element) {
     element = $(element);
     if(!element.parentNode) return true;
@@ -336,6 +452,14 @@ Test.Unit.Assertions.prototype = {
   },
   assertVisible: function(element) {
     this.assert(this._isVisible(element), Test.Unit.inspect(element) + " was not visible. " + ("" || arguments[1]));
+  },
+  benchmark: function(operation, iterations) {
+    var startAt = new Date();
+    (iterations || 1).times(operation);
+    var timeTaken = ((new Date())-startAt);
+    this.info((arguments[2] || 'Operation') + ' finished ' + 
+       iterations + ' iterations in ' + (timeTaken/1000)+'s' );
+    return timeTaken;
   }
 }
 
@@ -344,7 +468,17 @@ Object.extend(Object.extend(Test.Unit.Testcase.prototype, Test.Unit.Assertions.p
   initialize: function(name, test, setup, teardown) {
     Test.Unit.Assertions.prototype.initialize.bind(this)();
     this.name           = name;
-    this.test           = test || function() {};
+    
+    if(typeof test == 'string') {
+      test = test.gsub(/(\.should[^\(]+\()/,'#{0}this,');
+      test = test.gsub(/(\.should[^\(]+)\(this,\)/,'#{1}(this)');
+      this.test = function() {
+        eval('with(this){'+test+'}');
+      }
+    } else {
+      this.test = test || function() {};
+    }
+    
     this.setup          = setup || function() {};
     this.teardown       = teardown || function() {};
     this.isWaiting      = false;
@@ -370,3 +504,65 @@ Object.extend(Object.extend(Test.Unit.Testcase.prototype, Test.Unit.Assertions.p
     catch(e) { this.error(e); }
   }
 });
+
+// *EXPERIMENTAL* BDD-style testing to please non-technical folk
+// This draws many ideas from RSpec http://rspec.rubyforge.org/
+
+Test.setupBDDExtensionMethods = function(){
+  var METHODMAP = {
+    shouldEqual:     'assertEqual',
+    shouldNotEqual:  'assertNotEqual',
+    shouldEqualEnum: 'assertEnumEqual',
+    shouldBeA:       'assertType',
+    shouldNotBeA:    'assertNotOfType',
+    shouldBeAn:      'assertType',
+    shouldNotBeAn:   'assertNotOfType',
+    shouldBeNull:    'assertNull',
+    shouldNotBeNull: 'assertNotNull',
+    
+    shouldBe:        'assertReturnsTrue',
+    shouldNotBe:     'assertReturnsFalse',
+    shouldRespondTo: 'assertRespondsTo'
+  };
+  var makeAssertion = function(assertion, args, object) { 
+   	this[assertion].apply(this,(args || []).concat([object]));
+  }
+  
+  Test.BDDMethods = {};   
+  $H(METHODMAP).each(function(pair) { 
+    Test.BDDMethods[pair.key] = function() { 
+       var args = $A(arguments); 
+       var scope = args.shift(); 
+       makeAssertion.apply(scope, [pair.value, args, this]); }; 
+  });
+  
+  [Array.prototype, String.prototype, Number.prototype, Boolean.prototype].each(
+    function(p){ Object.extend(p, Test.BDDMethods) }
+  );
+}
+
+Test.context = function(name, spec, log){
+  Test.setupBDDExtensionMethods();
+  
+  var compiledSpec = {};
+  var titles = {};
+  for(specName in spec) {
+    switch(specName){
+      case "setup":
+      case "teardown":
+        compiledSpec[specName] = spec[specName];
+        break;
+      default:
+        var testName = 'test'+specName.gsub(/\s+/,'-').camelize();
+        var body = spec[specName].toString().split('\n').slice(1);
+        if(/^\{/.test(body[0])) body = body.slice(1);
+        body.pop();
+        body = body.map(function(statement){ 
+          return statement.strip()
+        });
+        compiledSpec[testName] = body.join('\n');
+        titles[testName] = specName;
+    }
+  }
+  new Test.Unit.Runner(compiledSpec, { titles: titles, testLog: log || 'testlog', context: name });
+};
\ No newline at end of file