Changeset 226 for trunk/trax/data

Timestamp:

06/21/06 11:53:01 (6 years ago)

Author:

john

Message:

updated scriptaculous js files

Location:

trunk/trax/data/public/javascripts

Files:

• application.js (added)
• builder.js (added)
• controls.js (modified) (20 diffs)
• dragdrop.js (modified) (7 diffs)
• effects.js (modified) (13 diffs)
• prototype.js (modified) (50 diffs)
• scriptaculous.js (added)
• slider.js (added)

trunk/trax/data/public/javascripts/controls.js

@@ -1 @@
-// $Id$
 // Copyright (c) 2005 Thomas Fuchs (http://script.aculo.us, http://mir.aculo.us)
 //           (c) 2005 Ivan Krstic (http://blogs.law.harvard.edu/ivan)
-// 
-// 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.
-
-Element.collectTextNodesIgnoreClass = function(element, ignoreclass) {
-  var children = $(element).childNodes;
-  var text     = "";
-  var classtest = new RegExp("^([^ ]+ )*" + ignoreclass+ "( [^ ]+)*$","i");
-  
-  for (var i = 0; i < children.length; i++) {
-    if(children[i].nodeType==3) {
-      text+=children[i].nodeValue;
-    } else {
-      if((!children[i].className.match(classtest)) && children[i].hasChildNodes())
-        text += Element.collectTextNodesIgnoreClass(children[i], ignoreclass);
-    }
-  }
-  
-  return text;
-}
+//           (c) 2005 Jon Tirsen (http://www.tirsen.com)
+// Contributors:
+//  Richard Livsey
+//  Rahul Bhargava
+//  Rob Wills
+//  
+// See scriptaculous.js for full license.
 
 // Autocompleter.Base handles all the autocompletion functionality 
@@ -48 +18 @@
 // the text inside the monitored textbox changes. This method 
 // should get the text for which to provide autocompletion by
-// invoking this.getEntry(), NOT by directly accessing
+// invoking this.getToken(), NOT by directly accessing
 // this.element.value. This is to allow incremental tokenized
 // autocompletion. Specific auto-completion logic (AJAX, etc)
@@ -59 +29 @@
 // will incrementally autocomplete with a comma as the token.
 // Additionally, ',' in the above example can be replaced with
-// a token array, e.g. { tokens: new Array (',', '\n') } which
+// a token array, e.g. { tokens: [',', '\n'] } which
 // enables autocompletion on multiple tokens. This is most 
 // useful when one of the tokens is \n (a newline), as it 
@@ -67 +37 @@
 Autocompleter.Base = function() {};
 Autocompleter.Base.prototype = {
-  base_initialize: function(element, update, options) {
+  baseInitialize: function(element, update, options) {
     this.element     = $(element); 
     this.update      = $(update);  
-    this.has_focus   = false; 
+    this.hasFocus    = false; 
     this.changed     = false; 
     this.active      = false; 
     this.index       = 0;     
-    this.entry_count = 0;
+    this.entryCount  = 0;
 
     if (this.setOptions)
@@ -80 +50 @@
     else
       this.options = options || {};
-     
-    this.options.tokens       = this.options.tokens || new Array();
+
+    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.min_chars    = this.options.min_chars || 1;
+    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';
-          var offsets = Position.cumulativeOffset(element);
-          update.style.left = offsets[0] + 'px';
-          update.style.top  = (offsets[1] + element.offsetHeight) + 'px';
-          update.style.width = element.offsetWidth + 'px';
+        Position.clone(element, update, {setHeight: false, offsetTop: element.offsetHeight});
       }
-      new Effect.Appear(update,{duration:0.15});
+      Effect.Appear(update,{duration:0.15});
     };
     this.options.onHide = this.options.onHide || 
     function(element, update){ new Effect.Fade(update,{duration:0.15}) };
-    
-    if(this.options.indicator)
-      this.indicator = $(this.options.indicator);
 
     if (typeof(this.options.tokens) == 'string') 
       this.options.tokens = new Array(this.options.tokens);
-       
+
     this.observer = null;
     
+    this.element.setAttribute('autocomplete','off');
+
     Element.hide(this.update);
-    
+
     Event.observe(this.element, "blur", this.onBlur.bindAsEventListener(this));
     Event.observe(this.element, "keypress", this.onKeyPress.bindAsEventListener(this));
@@ -113 +80 @@
 
   show: function() {
-    if(this.update.style.display=='none') this.options.onShow(this.element, this.update);
-    if(!this.iefix && (navigator.appVersion.indexOf('MSIE')>0) && this.update.style.position=='absolute') {
+    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) &&
+      (Element.getStyle(this.update, 'position')=='absolute')) {
       new Insertion.After(this.update, 
        '<iframe id="' + this.update.id + '_iefix" '+
-       'style="display:none;filter:progid:DXImageTransform.Microsoft.Alpha(opacity=0);" ' +
+       'style="display:none;position:absolute;filter:progid:DXImageTransform.Microsoft.Alpha(opacity=0);" ' +
        'src="javascript:false;" frameborder="0" scrolling="no"></iframe>');
       this.iefix = $(this.update.id+'_iefix');
     }
-    if(this.iefix) {
-      Position.clone(this.update, this.iefix);
-      this.iefix.style.zIndex = 1;
-      this.update.style.zIndex = 2;
-      Element.show(this.iefix);
-    }
+    if(this.iefix) setTimeout(this.fixIEOverlapping.bind(this), 50);
   },
   
+  fixIEOverlapping: function() {
+    Position.clone(this.update, this.iefix);
+    this.iefix.style.zIndex = 1;
+    this.update.style.zIndex = 2;
+    Element.show(this.iefix);
+  },
+
   hide: function() {
-    if(this.update.style.display=='') this.options.onHide(this.element, this.update);
+    this.stopIndicator();
+    if(Element.getStyle(this.update, 'display')!='none') this.options.onHide(this.element, this.update);
     if(this.iefix) Element.hide(this.iefix);
   },
-  
+
   startIndicator: function() {
-    if(this.indicator) Element.show(this.indicator);
-  },
-  
+    if(this.options.indicator) Element.show(this.options.indicator);
+  },
+
   stopIndicator: function() {
-    if(this.indicator) Element.hide(this.indicator);
+    if(this.options.indicator) Element.hide(this.options.indicator);
   },
 
@@ -147 +120 @@
        case Event.KEY_TAB:
        case Event.KEY_RETURN:
-         this.select_entry();
+         this.selectEntry();
          Event.stop(event);
        case Event.KEY_ESC:
          this.hide();
          this.active = false;
+         Event.stop(event);
          return;
        case Event.KEY_LEFT:
@@ -157 +131 @@
          return;
        case Event.KEY_UP:
-         this.mark_previous();
+         this.markPrevious();
          this.render();
          if(navigator.appVersion.indexOf('AppleWebKit')>0) Event.stop(event);
          return;
        case Event.KEY_DOWN:
-         this.mark_next();
+         this.markNext();
          this.render();
          if(navigator.appVersion.indexOf('AppleWebKit')>0) Event.stop(event);
@@ -168 +142 @@
       }
      else 
-      if(event.keyCode==Event.KEY_TAB || event.keyCode==Event.KEY_RETURN) 
-        return;
-    
+       if(event.keyCode==Event.KEY_TAB || event.keyCode==Event.KEY_RETURN || 
+         (navigator.appVersion.indexOf('AppleWebKit') > 0 && event.keyCode == 0)) return;
+
     this.changed = true;
-    this.has_focus = true;
-    
+    this.hasFocus = true;
+
     if(this.observer) clearTimeout(this.observer);
       this.observer = 
         setTimeout(this.onObserverEvent.bind(this), this.options.frequency*1000);
   },
-  
+
+  activate: function() {
+    this.changed = false;
+    this.hasFocus = true;
+    this.getUpdatedChoices();
+  },
+
   onHover: function(event) {
     var element = Event.findElement(event, 'LI');
@@ -192 +172 @@
     var element = Event.findElement(event, 'LI');
     this.index = element.autocompleteIndex;
-    this.select_entry();
-    Event.stop(event);
+    this.selectEntry();
+    this.hide();
   },
   
@@ -199 +179 @@
     // needed to make click events working
     setTimeout(this.hide.bind(this), 250);
-    this.has_focus = false;
+    this.hasFocus = false;
     this.active = false;     
   }, 
   
   render: function() {
-    if(this.entry_count > 0) {
-      for (var i = 0; i < this.entry_count; i++)
+    if(this.entryCount > 0) {
+      for (var i = 0; i < this.entryCount; i++)
         this.index==i ? 
-          Element.addClassName(this.get_entry(i),"selected") : 
-          Element.removeClassName(this.get_entry(i),"selected");
+          Element.addClassName(this.getEntry(i),"selected") : 
+          Element.removeClassName(this.getEntry(i),"selected");
         
-      if(this.has_focus) { 
-        if(this.get_current_entry().scrollIntoView) 
-          this.get_current_entry().scrollIntoView(false);
-        
+      if(this.hasFocus) { 
         this.show();
         this.active = true;
       }
-    } else this.hide();
+    } else {
+      this.active = false;
+      this.hide();
+    }
   },
   
-  mark_previous: function() {
+  markPrevious: function() {
     if(this.index > 0) this.index--
-      else this.index = this.entry_count-1;
+      else this.index = this.entryCount-1;
   },
   
-  mark_next: function() {
-    if(this.index < this.entry_count-1) this.index++
+  markNext: function() {
+    if(this.index < this.entryCount-1) this.index++
       else this.index = 0;
   },
   
-  get_entry: function(index) {
+  getEntry: function(index) {
     return this.update.firstChild.childNodes[index];
   },
   
-  get_current_entry: function() {
-    return this.get_entry(this.index);
+  getCurrentEntry: function() {
+    return this.getEntry(this.index);
   },
   
-  select_entry: function() {
+  selectEntry: function() {
     this.active = false;
-    value = Element.collectTextNodesIgnoreClass(this.get_current_entry(), 'informal').unescapeHTML();
-    this.updateElement(value);
-    this.element.focus();
-  },
-
-  updateElement: function(value) {
-    var last_token_pos = this.findLastToken();
-    if (last_token_pos != -1) {
-      var new_value = this.element.value.substr(0, last_token_pos + 1);
-      var whitespace = this.element.value.substr(last_token_pos + 1).match(/^\s+/);
+    this.updateElement(this.getCurrentEntry());
+  },
+
+  updateElement: function(selectedElement) {
+    if (this.options.updateElement) {
+      this.options.updateElement(selectedElement);
+      return;
+    }
+    var value = '';
+    if (this.options.select) {
+      var nodes = document.getElementsByClassName(this.options.select, selectedElement) || [];
+      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+/);
       if (whitespace)
-        new_value += whitespace[0];
-      this.element.value = new_value + value;
+        newValue += whitespace[0];
+      this.element.value = newValue + value;
     } else {
       this.element.value = value;
-    } 
-  },
-  
+    }
+    this.element.focus();
+    
+    if (this.options.afterUpdateElement)
+      this.options.afterUpdateElement(this.element, selectedElement);
+  },
+
   updateChoices: function(choices) {
-    if(!this.changed && this.has_focus) {
+    if(!this.changed && this.hasFocus) {
       this.update.innerHTML = choices;
       Element.cleanWhitespace(this.update);
@@ -265 +258 @@
 
       if(this.update.firstChild && this.update.firstChild.childNodes) {
-        this.entry_count = 
+        this.entryCount = 
           this.update.firstChild.childNodes.length;
-        for (var i = 0; i < this.entry_count; i++) {
-          entry = this.get_entry(i);
+        for (var i = 0; i < this.entryCount; i++) {
+          var entry = this.getEntry(i);
           entry.autocompleteIndex = i;
           this.addObservers(entry);
         }
       } else { 
-        this.entry_count = 0;
+        this.entryCount = 0;
       }
-      
+
       this.stopIndicator();
-      
+
       this.index = 0;
       this.render();
@@ -290 +283 @@
   onObserverEvent: function() {
     this.changed = false;   
-    if(this.getEntry().length>=this.options.min_chars) {
+    if(this.getToken().length>=this.options.minChars) {
       this.startIndicator();
       this.getUpdatedChoices();
@@ -299 +292 @@
   },
 
-  getEntry: function() {
-    var token_pos = this.findLastToken();
-    if (token_pos != -1)
-      var ret = this.element.value.substr(token_pos + 1).replace(/^\s+/,'').replace(/\s+$/,'');
+  getToken: function() {
+    var tokenPos = this.findLastToken();
+    if (tokenPos != -1)
+      var ret = this.element.value.substr(tokenPos + 1).replace(/^\s+/,'').replace(/\s+$/,'');
     else
       var ret = this.element.value;
-    
+
     return /\n/.test(ret) ? '' : ret;
   },
 
   findLastToken: function() {
-    var last_token_pos = -1;
+    var lastTokenPos = -1;
 
     for (var i=0; i<this.options.tokens.length; i++) {
-      var this_token_pos = this.element.value.lastIndexOf(this.options.tokens[i]);
-      if (this_token_pos > last_token_pos)
-        last_token_pos = this_token_pos;
-    }
-    return last_token_pos;
+      var thisTokenPos = this.element.value.lastIndexOf(this.options.tokens[i]);
+      if (thisTokenPos > lastTokenPos)
+        lastTokenPos = thisTokenPos;
+    }
+    return lastTokenPos;
   }
 }
@@ -324 +317 @@
 Object.extend(Object.extend(Ajax.Autocompleter.prototype, Autocompleter.Base.prototype), {
   initialize: function(element, update, url, options) {
-      this.base_initialize(element, update, options);
+    this.baseInitialize(element, update, options);
     this.options.asynchronous  = true;
-    this.options.onComplete    = this.onComplete.bind(this)
-    this.options.method        = 'post';
+    this.options.onComplete    = this.onComplete.bind(this);
     this.options.defaultParams = this.options.parameters || null;
     this.url                   = url;
   },
-  
+
   getUpdatedChoices: function() {
-    entry = encodeURIComponent(this.element.name) + '=' + 
-      encodeURIComponent(this.getEntry());
-      
+    entry = encodeURIComponent(this.options.paramName) + '=' + 
+      encodeURIComponent(this.getToken());
+
     this.options.parameters = this.options.callback ?
       this.options.callback(this.element, entry) : entry;
-        
+
     if(this.options.defaultParams) 
       this.options.parameters += '&' + this.options.defaultParams;
-    
+
     new Ajax.Request(this.url, this.options);
   },
-  
+
   onComplete: function(request) {
     this.updateChoices(request.responseText);
@@ -363 +355 @@
 // - choices - How many autocompletion choices to offer
 //
-// - partial_search - If false, the autocompleter will match entered
+// - partialSearch - If false, the autocompleter will match entered
 //                    text only at the beginning of strings in the 
 //                    autocomplete array. Defaults to true, which will
@@ -369 +361 @@
 //                    strings in the autocomplete array. If you want to
 //                    search anywhere in the string, additionally set
-//                    the option full_search to true (default: off).
-//
-// - full_search - Search anywhere in autocomplete array strings.
-//
-// - partial_chars - How many characters to enter before triggering
-//                   a partial match (unlike min_chars, which defines
+//                    the option fullSearch to true (default: off).
+//
+// - fullSsearch - Search anywhere in autocomplete array strings.
+//
+// - partialChars - How many characters to enter before triggering
+//                   a partial match (unlike minChars, which defines
 //                   how many characters are required to do any match
 //                   at all). Defaults to 2.
 //
-// - ignore_case - Whether to ignore case when autocompleting.
+// - ignoreCase - Whether to ignore case when autocompleting.
 //                 Defaults to true.
 //
@@ -389 +381 @@
 Autocompleter.Local.prototype = Object.extend(new Autocompleter.Base(), {
   initialize: function(element, update, array, options) {
-    this.base_initialize(element, update, options);
+    this.baseInitialize(element, update, options);
     this.options.array = array;
   },
@@ -400 +392 @@
     this.options = Object.extend({
       choices: 10,
-      partial_search: true,
-      partial_chars: 2,
-      ignore_case: true,
-      full_search: false,
+      partialSearch: true,
+      partialChars: 2,
+      ignoreCase: true,
+      fullSearch: false,
       selector: function(instance) {
-        var ret       = new Array(); // Beginning matches
-        var partial   = new Array(); // Inside matches
-        var entry     = instance.getEntry();
+        var ret       = []; // Beginning matches
+        var partial   = []; // Inside matches
+        var entry     = instance.getToken();
         var count     = 0;
-        
+
         for (var i = 0; i < instance.options.array.length &&  
-            ret.length < instance.options.choices ; i++) { 
+          ret.length < instance.options.choices ; i++) { 
+
           var elem = instance.options.array[i];
-          var found_pos = instance.options.ignore_case ? 
+          var foundPos = instance.options.ignoreCase ? 
             elem.toLowerCase().indexOf(entry.toLowerCase()) : 
             elem.indexOf(entry);
 
-          while (found_pos != -1) {
-            if (found_pos == 0 && elem.length != entry.length) { 
+          while (foundPos != -1) {
+            if (foundPos == 0 && elem.length != entry.length) { 
               ret.push("<li><strong>" + elem.substr(0, entry.length) + "</strong>" + 
                 elem.substr(entry.length) + "</li>");
               break;
-            } else if (entry.length >= instance.options.partial_chars && 
-              instance.options.partial_search && found_pos != -1) {
-              if (instance.options.full_search || /\s/.test(elem.substr(found_pos-1,1))) {
-                partial.push("<li>" + elem.substr(0, found_pos) + "<strong>" +
-                  elem.substr(found_pos, entry.length) + "</strong>" + elem.substr(
-                  found_pos + entry.length) + "</li>");
+            } else if (entry.length >= instance.options.partialChars && 
+              instance.options.partialSearch && foundPos != -1) {
+              if (instance.options.fullSearch || /\s/.test(elem.substr(foundPos-1,1))) {
+                partial.push("<li>" + elem.substr(0, foundPos) + "<strong>" +
+                  elem.substr(foundPos, entry.length) + "</strong>" + elem.substr(
+                  foundPos + entry.length) + "</li>");
                 break;
               }
             }
 
-            found_pos = instance.options.ignore_case ? 
-              elem.toLowerCase().indexOf(entry.toLowerCase(), found_pos + 1) : 
-              elem.indexOf(entry, found_pos + 1);
+            foundPos = instance.options.ignoreCase ? 
+              elem.toLowerCase().indexOf(entry.toLowerCase(), foundPos + 1) : 
+              elem.indexOf(entry, foundPos + 1);
 
           }
@@ -445 +438 @@
   }
 });
+
+// AJAX in-place editor
+//
+// see documentation on http://wiki.script.aculo.us/scriptaculous/show/Ajax.InPlaceEditor
+
+// 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
+// waits 1 ms (with setTimeout) until it does the activation
+Field.scrollFreeActivate = function(field) {
+  setTimeout(function() {
+    Field.activate(field);
+  }, 1);
+}
+
+Ajax.InPlaceEditor = Class.create();
+Ajax.InPlaceEditor.defaultHighlightColor = "#FFFF99";
+Ajax.InPlaceEditor.prototype = {
+  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;
+      }
+    }
+    
+    if (this.options.externalControl) {
+      this.options.externalControl = $(this.options.externalControl);
+    }
+    
+    this.originalBackground = Element.getStyle(this.element, 'background-color');
+    if (!this.originalBackground) {
+      this.originalBackground = "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);
+    }
+    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 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;
+    } 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;
+    }
+    
+    if(this.options.loadTextURL) {
+      this.loadExternalText();
+    }
+    this.form.appendChild(this.editField);
+  },
+  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;
+    }
+    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]);
+    }
+    return false;
+  },
+  onLoading: function() {
+    this.saving = true;
+    this.removeForm();
+    this.leaveHover();
+    this.showSaving();
+  },
+  showSaving: function() {
+    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);
+  },
+  removeForm: function() {
+    if(this.form) {
+      if (this.form.parentNode) Element.remove(this.form);
+      this.form = null;
+    }
+  },
+  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)
+  },
+  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
+    });
+  },
+  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);
+    }
+    this.editing = false;
+    this.saving = false;
+    this.oldInnerHTML = null;
+    this.onLeaveEditMode();
+  },
+  onComplete: function(transport) {
+    this.leaveEditMode();
+    this.options.onComplete.bind(this)(transport, this.element);
+  },
+  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);
+    }
+  }
+};
+
+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;
+    }
+
+    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);
+    }
+  }
+});
+
+// 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 = {
+  initialize: function(element, delay, callback) {
+    this.delay     = delay || 0.5;
+    this.element   = $(element);
+    this.callback  = callback;
+    this.timer     = null;
+    this.lastValue = $F(this.element); 
+    Event.observe(this.element,'keyup',this.delayedListener.bindAsEventListener(this));
+  },
+  delayedListener: function(event) {
+    if(this.lastValue == $F(this.element)) return;
+    if(this.timer) clearTimeout(this.timer);
+    this.timer = setTimeout(this.onTimerEvent.bind(this), this.delay * 1000);
+    this.lastValue = $F(this.element);
+  },
+  onTimerEvent: function() {
+    this.timer = null;
+    this.callback(this.element, $F(this.element));
+  }
+};

trunk/trax/data/public/javascripts/dragdrop.js

@@ -1 @@
-// $Id$
 // Copyright (c) 2005 Thomas Fuchs (http://script.aculo.us, http://mir.aculo.us)
-// 
-// Element.Class part Copyright (c) 2005 by Rick Olson
-// 
-// 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.
-
-Element.Class = {
-    // Element.toggleClass(element, className) toggles the class being on/off
-    // Element.toggleClass(element, className1, className2) toggles between both classes,
-    //   defaulting to className1 if neither exist
-    toggle: function(element, className) {
-      if(Element.Class.has(element, className)) {
-        Element.Class.remove(element, className);
-        if(arguments.length == 3) Element.Class.add(element, arguments[2]);
-      } else {
-        Element.Class.add(element, className);
-        if(arguments.length == 3) Element.Class.remove(element, arguments[2]);
-      }
-    },
-
-    // gets space-delimited classnames of an element as an array
-    get: function(element) {
-      element = $(element);
-      return element.className.split(' ');
-    },
-
-    // functions adapted from original functions by Gavin Kistner
-    remove: function(element) {
-      element = $(element);
-      var regEx;
-      for(var i = 1; i < arguments.length; i++) {
-        regEx = new RegExp("^" + arguments[i] + "\\b\\s*|\\s*\\b" + arguments[i] + "\\b", 'g');
-        element.className = element.className.replace(regEx, '')
-      }
-    },
-
-    add: function(element) {
-      element = $(element);
-      for(var i = 1; i < arguments.length; i++) {
-        Element.Class.remove(element, arguments[i]);
-        element.className += (element.className.length > 0 ? ' ' : '') + arguments[i];
-      }
-    },
-
-    // returns true if all given classes exist in said element
-    has: function(element) {
-      element = $(element);
-      if(!element || !element.className) return false;
-      var regEx;
-      for(var i = 1; i < arguments.length; i++) {
-        regEx = new RegExp("\\b" + arguments[i] + "\\b");
-        if(!regEx.test(element.className)) return false;
-      }
-      return true;
-    },
-    
-    // expects arrays of strings and/or strings as optional paramters
-    // Element.Class.has_any(element, ['classA','classB','classC'], 'classD')
-    has_any: function(element) {
-      element = $(element);
-      if(!element || !element.className) return false;
-      var regEx;
-      for(var i = 1; i < arguments.length; i++) {
-        if((typeof arguments[i] == 'object') && 
-          (arguments[i].constructor == Array)) {
-          for(var j = 0; j < arguments[i].length; j++) {
-            regEx = new RegExp("\\b" + arguments[i][j] + "\\b");
-            if(regEx.test(element.className)) return true;
-          }
-        } else {
-          regEx = new RegExp("\\b" + arguments[i] + "\\b");
-          if(regEx.test(element.className)) return true;
-        }
-      }
-      return false;
-    },
-    
-    childrenWith: function(element, className) {
-      var children = $(element).getElementsByTagName('*');
-      var elements = new Array();
-      
-      for (var i = 0; i < children.length; i++) {
-        if (Element.Class.has(children[i], className)) {
-          elements.push(children[i]);
-          break;
-        }
-      }
-      
-      return elements;
-    }
-}
+//           (c) 2005 Sammi Williams (http://www.oriontransfer.co.nz, sammi@oriontransfer.co.nz)
+//  
+// See scriptaculous.js for full license.
 
 /*--------------------------------------------------------------------------*/
 
 var Droppables = {
-  drops: false,
-  
+  drops: [],
+
   remove: function(element) {
-    for(var i = 0; i < this.drops.length; i++)
-      if(this.drops[i].element == element)
-        this.drops.splice(i,1);
-  },
-  
+    this.drops = this.drops.reject(function(d) { return d.element==$(element) });
+  },
+
   add: function(element) {
-    var element = $(element);
+    element = $(element);
     var options = Object.extend({
       greedy:     true,
-      hoverclass: null  
+      hoverclass: null,
+      tree:       false
     }, arguments[1] || {});
-    
+
     // cache containers
     if(options.containment) {
-      options._containers = new Array();
+      options._containers = [];
       var containment = options.containment;
       if((typeof containment == 'object') && 
         (containment.constructor == Array)) {
-        for(var i=0; i<containment.length; i++)
-          options._containers.push($(containment[i]));
+        containment.each( function(c) { options._containers.push($(c)) });
       } else {
         options._containers.push($(containment));
       }
-      options._containers_length = 
-        options._containers.length-1;
-    }
-    
+    }
+    
+    if(options.accept) options.accept = [options.accept].flatten();
+
     Element.makePositioned(element); // fix IE
-    
     options.element = element;
-    
-    // activate the droppable    
-    if(!this.drops) this.drops = [];
+
     this.drops.push(options);
   },
   
-  is_contained: function(element, drop) {
-    var containers = drop._containers;
-    var parentNode = element.parentNode;
-    var i = drop._containers_length;
-    do { if(parentNode==containers[i]) return true; } while (i--);
-    return false;
-  },
-  
-  is_affected: function(pX, pY, element, drop) {
+  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 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) &&
       ((!drop._containers) ||
-        this.is_contained(element, drop)) &&
+        this.isContained(element, drop)) &&
       ((!drop.accept) ||
-        (Element.Class.has_any(element, drop.accept))) &&
-      Position.within(drop.element, pX, pY) );
-  },
-  
+        (Element.classNames(element).detect( 
+          function(v) { return drop.accept.include(v) } ) )) &&
+      Position.within(drop.element, point[0], point[1]) );
+  },
+
   deactivate: function(drop) {
-    Element.Class.remove(drop.element, drop.hoverclass);
+    if(drop.hoverclass)
+      Element.removeClassName(drop.element, drop.hoverclass);
     this.last_active = null;
   },
-  
+
   activate: function(drop) {
+    if(drop.hoverclass)
+      Element.addClassName(drop.element, drop.hoverclass);
+    this.last_active = drop;
+  },
+
+  show: function(point, element) {
+    if(!this.drops.length) return;
+    var affected = [];
+    
     if(this.last_active) this.deactivate(this.last_active);
-    if(drop.hoverclass) {
-      Element.Class.add(drop.element, drop.hoverclass);
-      this.last_active = drop;
-    }
-  },
-  
-  show: function(event, element) {
-    if(!this.drops) return;
-    var pX = Event.pointerX(event);
-    var pY = Event.pointerY(event);
-    Position.prepare();
-    
-    var i = this.drops.length-1; do {
-      var drop = this.drops[i];
-      if(this.is_affected(pX, pY, element, drop)) {
-        if(drop.onHover)
-           drop.onHover(element, drop.element, Position.overlap(drop.overlap, drop.element));
-        if(drop.greedy) { 
-          this.activate(drop);
-          return;
-        }
-      }
-    } while (i--);
-  },
-  
+    this.drops.each( function(drop) {
+      if(Droppables.isAffected(point, element, drop))
+        affected.push(drop);
+    });
+        
+    if(affected.length>0) {
+      drop = Droppables.findDeepestChild(affected);
+      Position.within(drop.element, point[0], point[1]);
+      if(drop.onHover)
+        drop.onHover(element, drop.element, Position.overlap(drop.overlap, drop.element));
+      
+      Droppables.activate(drop);
+    }
+  },
+
   fire: function(event, element) {
     if(!this.last_active) return;
     Position.prepare();
-    
-    if (this.is_affected(Event.pointerX(event), Event.pointerY(event), element, this.last_active))
+
+    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);
-    
-  },
-  
+        this.last_active.onDrop(element, this.last_active.element, event);
+  },
+
   reset: function() {
     if(this.last_active)
@@ -217 +119 @@
 }
 
-Draggables = {
-  observers: new Array(),
+var Draggables = {
+  drags: [],
+  observers: [],
+  
+  register: function(draggable) {
+    if(this.drags.length == 0) {
+      this.eventMouseUp   = this.endDrag.bindAsEventListener(this);
+      this.eventMouseMove = this.updateDrag.bindAsEventListener(this);
+      this.eventKeypress  = this.keyPress.bindAsEventListener(this);
+      
+      Event.observe(document, "mouseup", this.eventMouseUp);
+      Event.observe(document, "mousemove", this.eventMouseMove);
+      Event.observe(document, "keypress", this.eventKeypress);
+    }
+    this.drags.push(draggable);
+  },
+  
+  unregister: function(draggable) {
+    this.drags = this.drags.reject(function(d) { return d==draggable });
+    if(this.drags.length == 0) {
+      Event.stopObserving(document, "mouseup", this.eventMouseUp);
+      Event.stopObserving(document, "mousemove", this.eventMouseMove);
+      Event.stopObserving(document, "keypress", this.eventKeypress);
+    }
+  },
+  
+  activate: function(draggable) {
+    window.focus(); // allows keypress events if window isn't currently focused, fails for Safari
+    this.activeDraggable = draggable;
+  },
+  
+  deactivate: function() {
+    this.activeDraggable = null;
+  },
+  
+  updateDrag: function(event) {
+    if(!this.activeDraggable) return;
+    var pointer = [Event.pointerX(event), Event.pointerY(event)];
+    // Mozilla-based browsers fire successive mousemove events with
+    // 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.activeDraggable) return;
+    this._lastPointer = null;
+    this.activeDraggable.endDrag(event);
+    this.activeDraggable = null;
+  },
+  
+  keyPress: function(event) {
+    if(this.activeDraggable)
+      this.activeDraggable.keyPress(event);
+  },
+  
   addObserver: function(observer) {
-    this.observers.push(observer);    
-  },
-  removeObserver: function(element) {  // element instead of obsever fixes mem leaks
-    for(var i = 0; i < this.observers.length; i++)
-      if(this.observers[i].element && (this.observers[i].element == element))
-        this.observers.splice(i,1);
-  },
-  notify: function(eventName, draggable) {  // 'onStart', 'onEnd'
-    for(var i = 0; i < this.observers.length; i++)
-      this.observers[i][eventName](draggable);
+    this.observers.push(observer);
+    this._cacheObserverCallbacks();
+  },
+  
+  removeObserver: function(element) {  // element instead of observer fixes mem leaks
+    this.observers = this.observers.reject( function(o) { return o.element==element });
+    this._cacheObserverCallbacks();
+  },
+  
+  notify: function(eventName, draggable, event) {  // 'onStart', 'onEnd', 'onDrag'
+    if(this[eventName+'Count'] > 0)
+      this.observers.each( function(o) {
+        if(o[eventName]) o[eventName](eventName, draggable, event);
+      });
+  },
+  
+  _cacheObserverCallbacks: function() {
+    ['onStart','onEnd','onDrag'].each( function(eventName) {
+      Draggables[eventName+'Count'] = Draggables.observers.select(
+        function(o) { return o[eventName]; }
+      ).length;
+    });
   }
 }
@@ -235 +204 @@
 /*--------------------------------------------------------------------------*/
 
-Draggable = Class.create();
+var Draggable = Class.create();
 Draggable.prototype = {
   initialize: function(element) {
     var options = Object.extend({
       handle: false,
-      starteffect: function(element) { 
-        new Effect.Opacity(element, {duration:0.2, from:1.0, to:0.7}); 
+      starteffect: function(element) {
+        element._opacity = Element.getOpacity(element); 
+        new Effect.Opacity(element, {duration:0.2, from:element._opacity, to:0.7}); 
       },
       reverteffect: function(element, top_offset, left_offset) {
-        new Effect.MoveBy(element, -top_offset, -left_offset, {duration:0.4});
+        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});
       },
-      endeffect: function(element) { 
-         new Effect.Opacity(element, {duration:0.2, from:0.7, to:1.0}); 
+      endeffect: function(element) {
+        var toOpacity = typeof element._opacity == 'number' ? element._opacity : 1.0
+        new Effect.Opacity(element, {duration:0.2, from:0.7, to:toOpacity}); 
       },
       zindex: 1000,
-      revert: false
+      revert: false,
+      scroll: false,
+      scrollSensitivity: 20,
+      scrollSpeed: 15,
+      snap: false   // false, or xy or [x,y] or function(x,y){ return [x,y] }
     }, arguments[1] || {});
-    
-    this.element      = $(element);
-    this.handle       = options.handle ? $(options.handle) : this.element;
-    
-    Element.makePositioned(this.element); // fix IE
-    
-    this.offsetX      = 0;
-    this.offsetY      = 0;
-    this.originalLeft = this.currentLeft();
-    this.originalTop  = this.currentTop();
-    this.originalX    = this.element.offsetLeft;
-    this.originalY    = this.element.offsetTop;
-    this.originalZ    = parseInt(this.element.style.zIndex || "0");
-    
-    this.options      = options;
-    
-    this.active       = false;
-    this.dragging     = false;   
-    
-    this.eventMouseDown = this.startDrag.bindAsEventListener(this);
-    this.eventMouseUp   = this.endDrag.bindAsEventListener(this);
-    this.eventMouseMove = this.update.bindAsEventListener(this);
-    this.eventKeypress  = this.keyPress.bindAsEventListener(this);
-    
+
+    this.element = $(element);
+    
+    if(options.handle && (typeof options.handle == 'string')) {
+      var h = Element.childrenWithClassName(this.element, options.handle, true);
+      if(h.length>0) this.handle = h[0];
+    }
+    if(!this.handle) this.handle = $(options.handle);
+    if(!this.handle) this.handle = this.element;
+    
+    if(options.scroll && !options.scroll.scrollTo && !options.scroll.outerHTML)
+      options.scroll = $(options.scroll);
+
+    Element.makePositioned(this.element); // fix IE    
+
+    this.delta    = this.currentDelta();
+    this.options  = options;
+    this.dragging = false;   
+
+    this.eventMouseDown = this.initDrag.bindAsEventListener(this);
     Event.observe(this.handle, "mousedown", this.eventMouseDown);
-    Event.observe(document, "mouseup", this.eventMouseUp);
-    Event.observe(document, "mousemove", this.eventMouseMove);
-    Event.observe(document, "keypress", this.eventKeypress);
-  },
+    
+    Draggables.register(this);
+  },
+  
   destroy: function() {
     Event.stopObserving(this.handle, "mousedown", this.eventMouseDown);
-    Event.stopObserving(document, "mouseup", this.eventMouseUp);
-    Event.stopObserving(document, "mousemove", this.eventMouseMove);
-    Event.stopObserving(document, "keypress", this.eventKeypress);
-  },
-  currentLeft: function() {
-    return parseInt(this.element.style.left || '0');
-  },
-  currentTop: function() {
-    return parseInt(this.element.style.top || '0')
-  },
+    Draggables.unregister(this);
+  },
+  
+  currentDelta: function() {
+    return([
+      parseInt(Element.getStyle(this.element,'left') || '0'),
+      parseInt(Element.getStyle(this.element,'top') || '0')]);
+  },
+  
+  initDrag: function(event) {
+    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(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]) });
+      
+      Draggables.activate(this);
+      Event.stop(event);
+    }
+  },
+  
   startDrag: function(event) {
-    if(Event.isLeftClick(event)) {
-      this.active = true;
-      
-      var style = this.element.style;
-      this.originalY = this.element.offsetTop  - this.currentTop()  - this.originalTop;
-      this.originalX = this.element.offsetLeft - this.currentLeft() - this.originalLeft;
-      this.offsetY =  event.clientY - this.originalY - this.originalTop;
-      this.offsetX =  event.clientX - this.originalX - this.originalLeft;
-      
-      Event.stop(event);
-    }
-  },
+    this.dragging = true;
+    
+    if(this.options.zindex) {
+      this.originalZ = parseInt(Element.getStyle(this.element,'z-index') || 0);
+      this.element.style.zIndex = this.options.zindex;
+    }
+    
+    if(this.options.ghosting) {
+      this._clone = this.element.cloneNode(true);
+      Position.absolutize(this.element);
+      this.element.parentNode.insertBefore(this._clone, this.element);
+    }
+    
+    if(this.options.scroll) {
+      if (this.options.scroll == window) {
+        var where = this._getWindowScroll(this.options.scroll);
+        this.originalScrollLeft = where.left;
+        this.originalScrollTop = where.top;
+      } else {
+        this.originalScrollLeft = this.options.scroll.scrollLeft;
+        this.originalScrollTop = this.options.scroll.scrollTop;
+      }
+    }
+    
+    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);
+    Draggables.notify('onDrag', this, event);
+    this.draw(pointer);
+    if(this.options.change) this.options.change(this);
+    
+    if(this.options.scroll) {
+      this.stopScrolling();
+      
+      var p;
+      if (this.options.scroll == window) {
+        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.push(p[0]+this.options.scroll.offsetWidth);
+        p.push(p[1]+this.options.scroll.offsetHeight);
+      }
+      var speed = [0,0];
+      if(pointer[0] < (p[0]+this.options.scrollSensitivity)) speed[0] = pointer[0]-(p[0]+this.options.scrollSensitivity);
+      if(pointer[1] < (p[1]+this.options.scrollSensitivity)) speed[1] = pointer[1]-(p[1]+this.options.scrollSensitivity);
+      if(pointer[0] > (p[2]-this.options.scrollSensitivity)) speed[0] = pointer[0]-(p[2]-this.options.scrollSensitivity);
+      if(pointer[1] > (p[3]-this.options.scrollSensitivity)) speed[1] = pointer[1]-(p[3]-this.options.scrollSensitivity);
+      this.startScrolling(speed);
+    }
+    
+    // fix AppleWebKit rendering
+    if(navigator.appVersion.indexOf('AppleWebKit')>0) window.scrollBy(0,0);
+    
+    Event.stop(event);
+  },
+  
   finishDrag: function(event, success) {
-    this.active = false;
     this.dragging = false;
-    
+
+    if(this.options.ghosting) {
+      Position.relativize(this.element);
+      Element.remove(this._clone);
+      this._clone = null;
+    }
+
     if(success) Droppables.fire(event, this.element);
-    Draggables.notify('onEnd', this);
-    
+    Draggables.notify('onEnd', this, event);
+
     var revert = this.options.revert;
     if(revert && typeof revert == 'function') revert = revert(this.element);
-      
+    
+    var d = this.currentDelta();
     if(revert && this.options.reverteffect) {
       this.options.reverteffect(this.element, 
-      this.currentTop()-this.originalTop,
-      this.currentLeft()-this.originalLeft);
+        d[1]-this.delta[1], d[0]-this.delta[0]);
     } else {
-      this.originalLeft = this.currentLeft();
-      this.originalTop  = this.currentTop();
-    }
-    
-    this.element.style.zIndex = this.originalZ;
-      
+      this.delta = d;
+    }
+
+    if(this.options.zindex)
+      this.element.style.zIndex = this.originalZ;
+
     if(this.options.endeffect) 
       this.options.endeffect(this.element);
-      
+
+    Draggables.deactivate(this);
     Droppables.reset();
   },
+  
   keyPress: function(event) {
-    if(this.active) {
-      if(event.keyCode==Event.KEY_ESC) {
-        this.finishDrag(event, false);
-        Event.stop(event);
-      }
-    }
-  },
+    if(event.keyCode!=Event.KEY_ESC) return;
+    this.finishDrag(event, false);
+    Event.stop(event);
+  },
+  
   endDrag: function(event) {
-    if(this.active && this.dragging) {
-      this.finishDrag(event, true);
-      Event.stop(event);
-    }
-    this.active = false;
-    this.dragging = false;
-  },
-  draw: function(event) {
+    if(!this.dragging) return;
+    this.stopScrolling();
+    this.finishDrag(event, true);
+    Event.stop(event);
+  },
+  
+  draw: function(point) {
+    var pos = Position.cumulativeOffset(this.element);
+    var d = this.currentDelta();
+    pos[0] -= d[0]; pos[1] -= d[1];
+    
+    if(this.options.scroll && (this.options.scroll != window)) {
+      pos[0] -= this.options.scroll.scrollLeft-this.originalScrollLeft;
+      pos[1] -= this.options.scroll.scrollTop-this.originalScrollTop;
+    }
+    
+    var p = [0,1].map(function(i){ 
+      return (point[i]-pos[i]-this.offset[i]) 
+    }.bind(this));
+    
+    if(this.options.snap) {
+      if(typeof this.options.snap == 'function') {
+        p = this.options.snap(p[0],p[1],this);
+      } else {
+      if(this.options.snap instanceof Array) {
+        p = p.map( function(v, i) {
+          return Math.round(v/this.options.snap[i])*this.options.snap[i] }.bind(this))
+      } else {
+        p = p.map( function(v) {
+          return Math.round(v/this.options.snap)*this.options.snap }.bind(this))
+      }
+    }}
+    
     var style = this.element.style;
-    this.originalX = this.element.offsetLeft - this.currentLeft() - this.originalLeft;
-    this.originalY = this.element.offsetTop  - this.currentTop()  - this.originalTop;
     if((!this.options.constraint) || (this.options.constraint=='horizontal'))
-      style.left = ((event.clientX - this.originalX) - this.offsetX) + "px";
+      style.left = p[0] + "px";
     if((!this.options.constraint) || (this.options.constraint=='vertical'))
-      style.top  = ((event.clientY - this.originalY) - this.offsetY) + "px";
+      style.top  = p[1] + "px";
     if(style.visibility=="hidden") style.visibility = ""; // fix gecko rendering
   },
-  update: function(event) {
-   if(this.active) {
-      if(!this.dragging) {
-        var style = this.element.style;
-        this.dragging = true;
-        if(style.position=="") style.position = "relative";
-        style.zIndex = this.options.zindex;
-        Draggables.notify('onStart', this);
-        if(this.options.starteffect) this.options.starteffect(this.element);
-      }
-      
-      Droppables.show(event, this.element);
-      this.draw(event);
-      if(this.options.change) this.options.change(this);
-      
-      // fix AppleWebKit rendering
-      if(navigator.appVersion.indexOf('AppleWebKit')>0) window.scrollBy(0,0); 
-      
-      Event.stop(event);
-   }
+  
+  stopScrolling: function() {
+    if(this.scrollInterval) {
+      clearInterval(this.scrollInterval);
+      this.scrollInterval = null;
+      Draggables._lastScrollPointer = null;
+    }
+  },
+  
+  startScrolling: function(speed) {
+    this.scrollSpeed = [speed[0]*this.options.scrollSpeed,speed[1]*this.options.scrollSpeed];
+    this.lastScrolled = new Date();
+    this.scrollInterval = setInterval(this.scroll.bind(this), 10);
+  },
+  
+  scroll: function() {
+    var current = new Date();
+    var delta = current - this.lastScrolled;
+    this.lastScrolled = current;
+    if(this.options.scroll == window) {
+      with (this._getWindowScroll(this.options.scroll)) {
+        if (this.scrollSpeed[0] || this.scrollSpeed[1]) {
+          var d = delta / 1000;
+          this.options.scroll.scrollTo( left + d*this.scrollSpeed[0], top + d*this.scrollSpeed[1] );
+        }
+      }
+    } else {
+      this.options.scroll.scrollLeft += this.scrollSpeed[0] * delta / 1000;
+      this.options.scroll.scrollTop  += this.scrollSpeed[1] * delta / 1000;
+    }
+    
+    Position.prepare();
+    Droppables.show(Draggables._lastPointer, this.element);
+    Draggables.notify('onDrag', this);
+    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);
+  },
+  
+  _getWindowScroll: function(w) {
+    var T, L, W, H;
+    with (w.document) {
+      if (w.document.documentElement && documentElement.scrollTop) {
+        T = documentElement.scrollTop;
+        L = documentElement.scrollLeft;
+      } else if (w.document.body) {
+        T = body.scrollTop;
+        L = body.scrollLeft;
+      }
+      if (w.innerWidth) {
+        W = w.innerWidth;
+        H = w.innerHeight;
+      } else if (w.document.documentElement && documentElement.clientWidth) {
+        W = documentElement.clientWidth;
+        H = documentElement.clientHeight;
+      } else {
+        W = body.offsetWidth;
+        H = body.offsetHeight
+      }
+    }
+    return { top: T, left: L, width: W, height: H };
   }
 }
@@ -383 +506 @@
 /*--------------------------------------------------------------------------*/
 
-SortableObserver = Class.create();
+var SortableObserver = Class.create();
 SortableObserver.prototype = {
   initialize: function(element, observer) {
@@ -390 +513 @@
     this.lastValue = Sortable.serialize(this.element);
   },
+  
   onStart: function() {
     this.lastValue = Sortable.serialize(this.element);
   },
-  onEnd: function() {    
+  
+  onEnd: function() {
+    Sortable.unmark();
     if(this.lastValue != Sortable.serialize(this.element))
       this.observer(this.element)
@@ -399 +525 @@
 }
 
-Sortable = {
-  sortables: new Array(),
-  options: function(element){
-    var element = $(element);
-    for(var i=0;i<this.sortables.length;i++)
-      if(this.sortables[i].element == element)
-        return this.sortables[i];
-    return null;        
-  },
+var Sortable = {
+  sortables: {},
+  
+  _findRootElement: function(element) {
+    while (element.tagName != "BODY") {  
+      if(element.id && Sortable.sortables[element.id]) return element;
+      element = element.parentNode;
+    }
+  },
+
+  options: function(element) {
+    element = Sortable._findRootElement($(element));
+    if(!element) return;
+    return Sortable.sortables[element.id];
+  },
+  
   destroy: function(element){
-    var element = $(element);
-    for(var i=0;i<this.sortables.length;i++) {
-      if(this.sortables[i].element == element) {
-        var s = this.sortables[i];
-        Draggables.removeObserver(s.element);
-        for(var j=0;j<s.droppables.length;j++)
-          Droppables.remove(s.droppables[j]);
-        for(var j=0;j<s.draggables.length;j++)
-          s.draggables[j].destroy();
-        this.sortables.splice(i,1);
-      }
-    }
-  },
+    var s = Sortable.options(element);
+    
+    if(s) {
+      Draggables.removeObserver(s.element);
+      s.droppables.each(function(d){ Droppables.remove(d) });
+      s.draggables.invoke('destroy');
+      
+      delete Sortable.sortables[s.element.id];
+    }
+  },
+
   create: function(element) {
-    var element = $(element);
+    element = $(element);
     var options = Object.extend({ 
       element:     element,
       tag:         'li',       // assumes li children, override with tag: 'tagname'
+      dropOnEmpty: false,
+      tree:        false,
+      treeTag:     'ul',
       overlap:     'vertical', // one of 'vertical', 'horizontal'
       constraint:  'vertical', // one of 'vertical', 'horizontal', false
@@ -433 +567 @@
       only:        false,
       hoverclass:  null,
-      onChange:    function() {},
-      onUpdate:    function() {}
+      ghosting:    false,
+      scroll:      false,
+      scrollSensitivity: 20,
+      scrollSpeed: 15,
+      format:      /^[^_]*_(.*)$/,
+      onChange:    Prototype.emptyFunction,
+      onUpdate:    Prototype.emptyFunction
     }, arguments[1] || {});
-    
+
     // clear any old sortable with same element
     this.destroy(element);
-    
+
     // build options for the draggables
     var options_for_draggable = {
       revert:      true,
+      scroll:      options.scroll,
+      scrollSpeed: options.scrollSpeed,
+      scrollSensitivity: options.scrollSensitivity,
+      ghosting:    options.ghosting,
       constraint:  options.constraint,
-      handle:      handle };
+      handle:      options.handle };
+
     if(options.starteffect)
       options_for_draggable.starteffect = options.starteffect;
+
     if(options.reverteffect)
       options_for_draggable.reverteffect = options.reverteffect;
+    else
+      if(options.ghosting) options_for_draggable.reverteffect = function(element) {
+        element.style.top  = 0;
+        element.style.left = 0;
+      };
+
     if(options.endeffect)
       options_for_draggable.endeffect = options.endeffect;
+
     if(options.zindex)
       options_for_draggable.zindex = options.zindex;
-    
+
     // build options for the droppables  
     var options_for_droppable = {
       overlap:     options.overlap,
       containment: options.containment,
+      tree:        options.tree,
       hoverclass:  options.hoverclass,
-      onHover: function(element, dropon, overlap) { 
-        if(overlap>0.5) {
-          if(dropon.previousSibling != element) {
-            var oldParentNode = element.parentNode;
-            element.style.visibility = "hidden"; // fix gecko rendering
-            dropon.parentNode.insertBefore(element, dropon);
-            if(dropon.parentNode!=oldParentNode && oldParentNode.sortable) 
-              oldParentNode.sortable.onChange(element);
-            if(dropon.parentNode.sortable)
-              dropon.parentNode.sortable.onChange(element);
-          }
-        } else {                
-          var nextElement = dropon.nextSibling || null;
-          if(nextElement != element) {
-            var oldParentNode = element.parentNode;
-            element.style.visibility = "hidden"; // fix gecko rendering
-            dropon.parentNode.insertBefore(element, nextElement);
-            if(dropon.parentNode!=oldParentNode && oldParentNode.sortable) 
-              oldParentNode.sortable.onChange(element);
-            if(dropon.parentNode.sortable)
-              dropon.parentNode.sortable.onChange(element);
+      onHover:     Sortable.onHover
+      //greedy:      !options.dropOnEmpty
+    }
+    
+    var options_for_tree = {
+      onHover:      Sortable.onEmptyHover,
+      overlap:      options.overlap,
+      containment:  options.containment,
+      hoverclass:   options.hoverclass
+    }
+
+    // fix for gecko engine
+    Element.cleanWhitespace(element); 
+
+    options.draggables = [];
+    options.droppables = [];
+
+    // drop on empty handling
+    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.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[element.id] = options;
+
+    // for onupdate
+    Draggables.addObserver(new SortableObserver(element, options.onUpdate));
+
+  },
+
+  // return all suitable-for-sortable elements in a guaranteed order
+  findElements: function(element, options) {
+    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(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;
+        element.style.visibility = "hidden"; // fix gecko rendering
+        dropon.parentNode.insertBefore(element, dropon);
+        if(dropon.parentNode!=oldParentNode) 
+          Sortable.options(oldParentNode).onChange(element);
+        Sortable.options(dropon.parentNode).onChange(element);
+      }
+    } else {
+      Sortable.mark(dropon, 'after');
+      var nextElement = dropon.nextSibling || null;
+      if(nextElement != element) {
+        var oldParentNode = element.parentNode;
+        element.style.visibility = "hidden"; // fix gecko rendering
+        dropon.parentNode.insertBefore(element, nextElement);
+        if(dropon.parentNode!=oldParentNode) 
+          Sortable.options(oldParentNode).onChange(element);
+        Sortable.options(dropon.parentNode).onChange(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});
+      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;
           }
         }
       }
-    }
-
-    // fix for gecko engine
-    Element.cleanWhitespace(element); 
-    
-    options.draggables = [];
-    options.droppables = [];
-    
-    // make it so 
-    var elements = element.childNodes;
-    for (var i = 0; i < elements.length; i++) 
-      if(elements[i].tagName && elements[i].tagName==options.tag.toUpperCase() &&
-        (!options.only || (Element.Class.has(elements[i], options.only)))) {
-        
-        // handles are per-draggable
-        var handle = options.handle ? 
-          Element.Class.childrenWith(elements[i], options.handle)[0] : elements[i];
-        
-        options.draggables.push(new Draggable(elements[i], Object.extend(options_for_draggable, { handle: handle })));
-        
-        Droppables.add(elements[i], options_for_droppable);
-        options.droppables.push(elements[i]);
-        
-      }
-      
-    // keep reference
-    this.sortables.push(options);
-    
-    // for onupdate
-    Draggables.addObserver(new SortableObserver(element, options.onUpdate));
-
-  },
-  serialize: function(element) {
-    var element = $(element);
+      
+      dropon.insertBefore(element, child);
+      
+      Sortable.options(oldParentNode).onChange(element);
+      droponOptions.onChange(element);
+    }
+  },
+
+  unmark: function() {
+    if(Sortable._marker) Element.hide(Sortable._marker);
+  },
+
+  mark: function(dropon, position) {
+    // mark on ghosting only
+    var sortable = Sortable.options(dropon.parentNode);
+    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';
+      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';
+    
+    if(position=='after')
+      if(sortable.overlap == 'horizontal') 
+        Sortable._marker.style.left = (offsets[0]+dropon.clientWidth) + 'px';
+      else
+        Sortable._marker.style.top = (offsets[1]+dropon.clientHeight) + 'px';
+    
+    Element.show(Sortable._marker);
+  },
+  
+  _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: new Array,
+        position: parent.children.length,
+        container: Sortable._findChildrenElement(children[i], options.treeTag.toUpperCase())
+      }
+      
+      /* 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; 
+  },
+
+  /* Finds the first element of the given tag type within a parent element.
+    Used for finding the first LI[ST] within a L[IST]I[TEM].*/
+  _findChildrenElement: function (element, containerTag) {
+    if (element && element.hasChildNodes)
+      for (var i = 0; i < element.childNodes.length; ++i)
+        if (element.childNodes[i].tagName == containerTag)
+          return element.childNodes[i];
+  
+    return null;
+  },
+
+  tree: function(element) {
+    element = $(element);
     var sortableOptions = this.options(element);
     var options = Object.extend({
-      tag:  sortableOptions.tag,
+      tag: sortableOptions.tag,
+      treeTag: sortableOptions.treeTag,
       only: sortableOptions.only,
-      name: element.id
+      name: element.id,
+      format: sortableOptions.format
     }, arguments[1] || {});
     
-    var items = $(element).childNodes;
-    var queryComponents = new Array();
- 
-    for(var i=0; i<items.length; i++)
-      if(items[i].tagName && items[i].tagName==options.tag.toUpperCase() &&
-        (!options.only || (Element.Class.has(items[i], options.only))))
-        queryComponents.push(
-          encodeURIComponent(options.name) + "[]=" + 
-          encodeURIComponent(items[i].id.split("_")[1]));
-
-    return queryComponents.join("&");
+    var root = {
+      id: null,
+      parent: null,
+      children: new Array,
+      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] || {});
+    
+    return $(this.findElements(element, options) || []).map( function(item) {
+      return item.id.match(options.format) ? item.id.match(options.format)[1] : '';
+    });
+  },
+
+  setSequence: function(element, new_sequence) {
+    element = $(element);
+    var options = Object.extend(this.options(element), arguments[2] || {});
+    
+    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];
+        n.parentNode.removeChild(n);
+    });
+   
+    new_sequence.each(function(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);
+    
+    if (options.tree) {
+      return Sortable.tree(element, arguments[1]).children.map( function (item) {
+        return [name + Sortable._constructIndex(item) + "=" + 
+                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) {
+  if (type == 'vertical' || type == 'height')
+    return element.offsetHeight;
+  else
+    return element.offsetWidth;
+}

trunk/trax/data/public/javascripts/effects.js

@@ -1 @@
-// $Id$
 // Copyright (c) 2005 Thomas Fuchs (http://script.aculo.us, http://mir.aculo.us)
-//
-// Parts (c) 2005 Justin Palmer (http://encytemedia.com/)
-// Parts (c) 2005 Mark Pilgrim (http://diveintomark.org/)
-// 
-// 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.
-
-
-Effect = {}
-Effect2 = Effect; // deprecated
+// Contributors:
+//  Justin Palmer (http://encytemedia.com/)
+//  Mark Pilgrim (http://diveintomark.org/)
+//  Martin Bialasinki
+//  
+// See scriptaculous.js for full license.  
+
+// 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 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();  
+    }  
+  }  
+  return(color.length==7 ? color : (arguments[0] || this));  
+}
+
+/*--------------------------------------------------------------------------*/
+
+Element.collectTextNodes = function(element) {  
+  return $A($(element).childNodes).collect( function(node) {
+    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) {
+    return (node.nodeType==3 ? node.nodeValue : 
+      ((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 $(element).style.opacity || '';
+}  
+
+Element.childrenWithClassName = function(element, className, findFirst) {
+  var classNameRegExp = new RegExp("(^|\\s)" + className + "(\\s|$)");
+  var results = $A($(element).getElementsByTagName('*'))[findFirst ? 'detect' : 'select']( function(c) { 
+    return (c.className && c.className.match(classNameRegExp));
+  });
+  if(!results) results = [];
+  return results;
+}
+
+Element.forceRerendering = function(element) {
+  try {
+    element = $(element);
+    var n = document.createTextNode(' ');
+    element.appendChild(n);
+    element.removeChild(n);
+  } catch(e) { }
+};
+
+/*--------------------------------------------------------------------------*/
+
+Array.prototype.call = function() {
+  var args = arguments;
+  this.each(function(f){ f.apply(this, args) });
+}
+
+/*--------------------------------------------------------------------------*/
+
+var Effect = {
+  tagifyText: function(element) {
+    var tagifyStyle = 'position:relative';
+    if(/MSIE/.test(navigator.userAgent)) tagifyStyle += ';zoom:1';
+    element = $(element);
+    $A(element.childNodes).each( function(child) {
+      if(child.nodeType==3) {
+        child.nodeValue.toArray().each( function(character) {
+          element.insertBefore(
+            Builder.node('span',{style: tagifyStyle},
+              character == ' ' ? String.fromCharCode(160) : character), 
+              child);
+        });
+        Element.remove(child);
+      }
+    });
+  },
+  multiple: function(element, effect) {
+    var elements;
+    if(((typeof element == 'object') || 
+        (typeof element == 'function')) && 
+       (element.length))
+      elements = element;
+    else
+      elements = $(element).childNodes;
+      
+    var options = Object.extend({
+      speed: 0.1,
+      delay: 0.0
+    }, arguments[2] || {});
+    var masterDelay = options.delay;
+
+    $A(elements).each( function(element, index) {
+      new effect(element, Object.extend(options, { delay: index * options.speed + masterDelay }));
+    });
+  },
+  PAIRS: {
+    'slide':  ['SlideDown','SlideUp'],
+    'blind':  ['BlindDown','BlindUp'],
+    'appear': ['Appear','Fade']
+  },
+  toggle: function(element, effect) {
+    element = $(element);
+    effect = (effect || 'appear').toLowerCase();
+    var options = Object.extend({
+      queue: { position:'end', scope:(element.id || 'global'), limit: 1 }
+    }, arguments[2] || {});
+    Effect[element.visible() ? 
+      Effect.PAIRS[effect][1] : Effect.PAIRS[effect][0]](element, options);
+  }
+};
+
+var Effect2 = Effect; // deprecated
 
 /* ------------- transitions ------------- */
@@ -42 +172 @@
 }
 Effect.Transitions.flicker = function(pos) {
-  return ((-Math.cos(pos*Math.PI)/4) + 0.75) + Math.random(0.25);
+  return ((-Math.cos(pos*Math.PI)/4) + 0.75) + Math.random()/4;
 }
 Effect.Transitions.wobble = function(pos) {
@@ -58 +188 @@
 }
 
-/* ------------- element ext -------------- */
-
-Element.makePositioned = function(element) {
-  element = $(element);
-  if(element.style.position == "")
-    element.style.position = "relative";
-}
-
-Element.makeClipping = function(element) {
-  element = $(element);
-  element._overflow = element.style.overflow || 'visible';
-  if(element._overflow!='hidden') element.style.overflow = 'hidden';
-}
-
-Element.undoClipping = function(element) {
-  element = $(element);
-  if(element._overflow!='hidden') element.style.overflow = element._overflow;
-}
-
 /* ------------- core effects ------------- */
+
+Effect.ScopedQueue = Class.create();
+Object.extend(Object.extend(Effect.ScopedQueue.prototype, Enumerable), {
+  initialize: function() {
+    this.effects  = [];
+    this.interval = null;
+  },
+  _each: function(iterator) {
+    this.effects._each(iterator);
+  },
+  add: function(effect) {
+    var timestamp = new Date().getTime();
+    
+    var position = (typeof effect.options.queue == 'string') ? 
+      effect.options.queue : effect.options.queue.position;
+    
+    switch(position) {
+      case 'front':
+        // move unstarted effects after this effect  
+        this.effects.findAll(function(e){ return e.state=='idle' }).each( function(e) {
+            e.startOn  += effect.finishOn;
+            e.finishOn += effect.finishOn;
+          });
+        break;
+      case 'end':
+        // start effect after last queued effect has finished
+        timestamp = this.effects.pluck('finishOn').max() || timestamp;
+        break;
+    }
+    
+    effect.startOn  += timestamp;
+    effect.finishOn += timestamp;
+
+    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);
+  },
+  remove: function(effect) {
+    this.effects = this.effects.reject(function(e) { return e==effect });
+    if(this.effects.length == 0) {
+      clearInterval(this.interval);
+      this.interval = null;
+    }
+  },
+  loop: function() {
+    var timePos = new Date().getTime();
+    this.effects.invoke('loop', timePos);
+  }
+});
+
+Effect.Queues = {
+  instances: $H(),
+  get: function(queueName) {
+    if(typeof queueName != 'string') return queueName;
+    
+    if(!this.instances[queueName])
+      this.instances[queueName] = new Effect.ScopedQueue();
+      
+    return this.instances[queueName];
+  }
+}
+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 = {
-  setOptions: function(options) {
-    this.options = Object.extend({
-      transition: Effect.Transitions.sinoidal,
-      duration:   1.0,   // seconds
-      fps:        25.0,  // max. 100fps
-      sync:       false, // true for combining
-      from:       0.0,
-      to:         1.0
-    }, options || {});
-  },
+  position: null,
   start: function(options) {
-    this.setOptions(options || {});
+    this.options      = Object.extend(Object.extend({},Effect.DefaultOptions), options || {});
     this.currentFrame = 0;
-    this.startOn      = new Date().getTime();
+    this.state        = 'idle';
+    this.startOn      = this.options.delay*1000;
     this.finishOn     = this.startOn + (this.options.duration*1000);
-    if(this.options.beforeStart) this.options.beforeStart(this);
-    if(!this.options.sync) this.loop();  
-  },
-  loop: function() {
-    var timePos = new Date().getTime();
-    if(timePos >= this.finishOn) {
-      this.render(1.0);
-      if(this.finish) this.finish(); 
-      if(this.options.afterFinish) this.options.afterFinish(this);
-      return;  
+    this.event('beforeStart');
+    if(!this.options.sync)
+      Effect.Queues.get(typeof this.options.queue == 'string' ? 
+        'global' : this.options.queue.scope).add(this);
+  },
+  loop: function(timePos) {
+    if(timePos >= this.startOn) {
+      if(timePos >= this.finishOn) {
+        this.render(1.0);
+        this.cancel();
+        this.event('beforeFinish');
+        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) {
+        this.render(pos);
+        this.currentFrame = frame;
+      }
     }
-    var pos   = (timePos - this.startOn) / (this.finishOn - this.startOn);
-    var frame = Math.round(pos * this.options.fps * this.options.duration);
-    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');
     }
-    this.timeout = setTimeout(this.loop.bind(this), 10);
-  },
-  render: function(pos) {
-    if(this.options.transition) pos = this.options.transition(pos);
-    pos *= (this.options.to-this.options.from);
-    pos += this.options.from; 
-    if(this.options.beforeUpdate) this.options.beforeUpdate(this);
-    if(this.update) this.update(pos);
-    if(this.options.afterUpdate) this.options.afterUpdate(this);  
+    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.timeout) clearTimeout(this.timeout);
+    if(!this.options.sync)
+      Effect.Queues.get(typeof this.options.queue == 'string' ? 
+        '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);
+  },
+  inspect: function() {
+    return '#<Effect:' + $H(this).inspect() + ',options:' + $H(this.options).inspect() + '>';
   }
 }
@@ -135 +336 @@
   },
   update: function(position) {
-    for (var i = 0; i < this.effects.length; i++)
-      this.effects[i].render(position);  
+    this.effects.invoke('render', position);
   },
   finish: function(position) {
-    for (var i = 0; i < this.effects.length; i++)
-      if(this.effects[i].finish) this.effects[i].finish(position);
+    this.effects.each( function(effect) {
+      effect.render(1.0);
+      effect.cancel();
+      effect.event('beforeFinish');
+      if(effect.finish) effect.finish(position);
+      effect.event('afterFinish');
+    });
   }
 });
 
-// Internet Explorer caveat: works only on elements the have
-// a 'layout', meaning having a given width or height. 
-// There is no way to safely set this automatically.
 Effect.Opacity = Class.create();
 Object.extend(Object.extend(Effect.Opacity.prototype, Effect.Base.prototype), {
   initialize: function(element) {
     this.element = $(element);
-    options = Object.extend({
-      from: 0.0,
+    // make this work on IE on elements without 'layout'
+    if(/MSIE/.test(navigator.userAgent) && (!this.element.hasLayout))
+      this.element.setStyle({zoom: 1});
+    var options = Object.extend({
+      from: this.element.getOpacity() || 0.0,
       to:   1.0
     }, arguments[1] || {});
@@ -158 +363 @@
   },
   update: function(position) {
-    this.setOpacity(position);
-  }, 
-  setOpacity: function(opacity) {
-    opacity = (opacity == 1) ? 0.99999 : opacity;
-    this.element.style.opacity = opacity;
-    this.element.style.filter = "alpha(opacity:"+opacity*100+")";
+    this.element.setOpacity(position);
   }
 });
 
-Effect.MoveBy = Class.create();
-Object.extend(Object.extend(Effect.MoveBy.prototype, Effect.Base.prototype), {
-  initialize: function(element, toTop, toLeft) {
-    this.element      = $(element);
-    this.originalTop  = parseFloat(this.element.style.top || '0');
-    this.originalLeft = parseFloat(this.element.style.left || '0');
-    this.toTop        = toTop;
-    this.toLeft       = toLeft;
-    Element.makePositioned(this.element);
-    this.start(arguments[3]);
+Effect.Move = Class.create();
+Object.extend(Object.extend(Effect.Move.prototype, Effect.Base.prototype), {
+  initialize: function(element) {
+    this.element = $(element);
+    var options = Object.extend({
+      x:    0,
+      y:    0,
+      mode: 'relative'
+    }, 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
+      this.options.x = this.options.x - this.originalLeft;
+      this.options.y = this.options.y - this.originalTop;
+    }
   },
   update: function(position) {
-    topd  = this.toTop  * position + this.originalTop;
-    leftd = this.toLeft * position + this.originalLeft;
-    this.setPosition(topd, leftd);
-  },
-  setPosition: function(topd, leftd) {
-    this.element.style.top  = topd  + "px";
-    this.element.style.left = leftd + "px";
+    this.element.setStyle({
+      left: this.options.x  * position + this.originalLeft + 'px',
+      top:  this.options.y  * position + this.originalTop  + 'px'
+    });
   }
 });
+
+// for backwards compatibility
+Effect.MoveBy = function(element, toTop, toLeft) {
+  return new Effect.Move(element, 
+    Object.extend({ x: toLeft, y: toTop }, arguments[3] || {}));
+};
 
 Effect.Scale = Class.create();
@@ -193 +410 @@
   initialize: function(element, percent) {
     this.element = $(element)
-    options = Object.extend({
+    var options = Object.extend({
       scaleX: true,
       scaleY: true,
@@ -199 +416 @@
       scaleFromCenter: false,
       scaleMode: 'box',        // 'box' or 'contents' or {} with provided values
-      scaleFrom: 100.0
+      scaleFrom: 100.0,
+      scaleTo:   percent
     }, arguments[2] || {});
-    this.originalTop    = this.element.offsetTop;
-    this.originalLeft   = this.element.offsetLeft;
-    if(this.element.style.fontSize=="") this.sizeEm = 1.0;
-    if(this.element.style.fontSize && this.element.style.fontSize.indexOf("em")>0)
-      this.sizeEm      = parseFloat(this.element.style.fontSize);
-    this.factor = (percent/100.0) - (options.scaleFrom/100.0);
-    if(options.scaleMode=='box') {
-      this.originalHeight = this.element.clientHeight;
-      this.originalWidth  = this.element.clientWidth; 
-    } else 
-    if(options.scaleMode=='contents') {
-      this.originalHeight = this.element.scrollHeight;
-      this.originalWidth  = this.element.scrollWidth;
-    } else {
-      this.originalHeight = options.scaleMode.originalHeight;
-      this.originalWidth  = options.scaleMode.originalWidth;
-    }
     this.start(options);
   },
-
+  setup: function() {
+    this.restoreAfterFinish = this.options.restoreAfterFinish || false;
+    this.elementPositioning = this.element.getStyle('position');
+    
+    this.originalStyle = {};
+    ['top','left','width','height','fontSize'].each( function(k) {
+      this.originalStyle[k] = this.element.style[k];
+    }.bind(this));
+      
+    this.originalTop  = this.element.offsetTop;
+    this.originalLeft = this.element.offsetLeft;
+    
+    var fontSize = this.element.getStyle('font-size') || '100%';
+    ['em','px','%'].each( function(fontSizeType) {
+      if(fontSize.indexOf(fontSizeType)>0) {
+        this.fontSize     = parseFloat(fontSize);
+        this.fontSizeType = fontSizeType;
+      }
+    }.bind(this));
+    
+    this.factor = (this.options.scaleTo - this.options.scaleFrom)/100;
+    
+    this.dims = null;
+    if(this.options.scaleMode=='box')
+      this.dims = [this.element.offsetHeight, this.element.offsetWidth];
+    if(/^content/.test(this.options.scaleMode))
+      this.dims = [this.element.scrollHeight, this.element.scrollWidth];
+    if(!this.dims)
+      this.dims = [this.options.scaleMode.originalHeight,
+                   this.options.scaleMode.originalWidth];
+  },
   update: function(position) {
-    currentScale = (this.options.scaleFrom/100.0) + (this.factor * position);
-    if(this.options.scaleContent && this.sizeEm) 
-      this.element.style.fontSize = this.sizeEm*currentScale + "em";
-    this.setDimensions(
-      this.originalWidth * currentScale, 
-      this.originalHeight * currentScale);
-  },
-
-  setDimensions: function(width, height) {
-    if(this.options.scaleX) this.element.style.width = width + 'px';
-    if(this.options.scaleY) this.element.style.height = height + 'px';
+    var currentScale = (this.options.scaleFrom/100.0) + (this.factor * position);
+    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);
+  },
+  finish: function(position) {
+    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) {
-      topd  = (height - this.originalHeight)/2;
-      leftd = (width  - this.originalWidth)/2;
-      if(this.element.style.position=='absolute') {
-        if(this.options.scaleY) this.element.style.top = this.originalTop-topd + "px";
-        if(this.options.scaleX) this.element.style.left = this.originalLeft-leftd + "px";
+      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';
       } else {
-        if(this.options.scaleY) this.element.style.top = -topd + "px";
-        if(this.options.scaleX) this.element.style.left = -leftd + "px";
+        if(this.options.scaleY) d.top = -topd + 'px';
+        if(this.options.scaleX) d.left = -leftd + 'px';
       }
     }
+    this.element.setStyle(d);
   }
 });
@@ -251 +484 @@
   initialize: function(element) {
     this.element = $(element);
-    
-    // try to parse current background color as default for endcolor
-    // browser stores this as: "rgb(255, 255, 255)", convert to "#ffffff" format
-    var endcolor = "#ffffff";
-    var current = this.element.style.backgroundColor;
-    if(current && current.slice(0,4) == "rgb(") {
-      endcolor = "#";
-      var cols = current.slice(4,current.length-1).split(',');
-      var i=0; do { endcolor += parseInt(cols[i]).toColorPart() } while (++i<3); }
-      
-    var options = Object.extend({
-      startcolor:   "#ffff99",
-      endcolor:     endcolor,
-      restorecolor: current 
-    }, arguments[1] || {});
-    
+    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; }
+    // Disable background image during the effect
+    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)
+      this.options.restorecolor = this.element.getStyle('background-color');
     // init color calculations
-    this.colors_base = [
-      parseInt(options.startcolor.slice(1,3),16),
-      parseInt(options.startcolor.slice(3,5),16),
-      parseInt(options.startcolor.slice(5),16) ];
-    this.colors_delta = [
-      parseInt(options.endcolor.slice(1,3),16)-this.colors_base[0],
-      parseInt(options.endcolor.slice(3,5),16)-this.colors_base[1],
-      parseInt(options.endcolor.slice(5),16)-this.colors_base[2] ];
-
-    this.start(options);
+    this._base  = $R(0,2).map(function(i){ return parseInt(this.options.startcolor.slice(i*2+1,i*2+3),16) }.bind(this));
+    this._delta = $R(0,2).map(function(i){ return parseInt(this.options.endcolor.slice(i*2+1,i*2+3),16)-this._base[i] }.bind(this));
   },
   update: function(position) {
-    var colors = [
-      Math.round(this.colors_base[0]+(this.colors_delta[0]*position)),
-      Math.round(this.colors_base[1]+(this.colors_delta[1]*position)),
-      Math.round(this.colors_base[2]+(this.colors_delta[2]*position)) ];
-    this.element.style.backgroundColor = "#" +
-      colors[0].toColorPart() + colors[1].toColorPart() + colors[2].toColorPart();
+    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)) });
   },
   finish: function() {
-    this.element.style.backgroundColor = this.options.restorecolor;
+    this.element.setStyle(Object.extend(this.oldStyle, {
+      backgroundColor: this.options.restorecolor
+    }));
   }
 });
@@ -296 +517 @@
   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 :
@@ -304 +529 @@
           document.documentElement.clientHeight : document.body.clientHeight);
     this.scrollStart = Position.deltaY;
-    this.delta  = (offsets[1] > max ? max : offsets[1]) - this.scrollStart;
-    this.start(arguments[1] || {});
+    this.delta = (offsets[1] > max ? max : offsets[1]) - this.scrollStart;
   },
   update: function(position) {
@@ -314 +538 @@
 });
 
-/* ------------- prepackaged effects ------------- */
+/* ------------- combination effects ------------- */
 
 Effect.Fade = function(element) {
-  options = Object.extend({
-  from: 1.0,
+  element = $(element);
+  var oldOpacity = element.getInlineOpacity();
+  var options = Object.extend({
+  from: element.getOpacity() || 1.0,
   to:   0.0,
-  afterFinish: function(effect) 
-    { Element.hide(effect.element);
-      effect.setOpacity(1); } 
-  }, arguments[1] || {});
+  afterFinishInternal: function(effect) { 
+    if(effect.options.to!=0) return;
+    effect.element.hide();
+    effect.element.setStyle({opacity: oldOpacity}); 
+  }}, arguments[1] || {});
   return new Effect.Opacity(element,options);
 }
 
 Effect.Appear = function(element) {
-  options = Object.extend({
-  from: 0.0,
+  element = $(element);
+  var options = Object.extend({
+  from: (element.getStyle('display') == 'none' ? 0.0 : element.getOpacity() || 0.0),
   to:   1.0,
-  beforeStart: function(effect)  
-    { effect.setOpacity(0);
-      Element.show(effect.element); },
-  afterUpdate: function(effect)  
-    { Element.show(effect.element); }
-  }, arguments[1] || {});
+  // force Safari to render floated elements properly
+  afterFinishInternal: function(effect) {
+    effect.element.forceRerendering();
+  },
+  beforeSetup: function(effect) {
+    effect.element.setOpacity(effect.options.from);
+    effect.element.show(); 
+  }}, arguments[1] || {});
   return new Effect.Opacity(element,options);
 }
 
 Effect.Puff = function(element) {
+  element = $(element);
+  var oldStyle = { opacity: element.getInlineOpacity(), position: element.getStyle('position') };
   return new Effect.Parallel(
-   [ new Effect.Scale(element, 200, { sync: true, scaleFromCenter: true }), 
-     new Effect.Opacity(element, { sync: true, to: 0.0, from: 1.0 } ) ], 
-     { duration: 1.0, 
-      afterUpdate: function(effect) 
-       { effect.effects[0].element.style.position = 'absolute'; },
-      afterFinish: function(effect)
-       { Element.hide(effect.effects[0].element); }
-     }
+   [ 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'}); },
+      afterFinishInternal: function(effect) {
+         effect.effects[0].element.hide();
+         effect.effects[0].element.setStyle(oldStyle); }
+     }, arguments[1] || {})
    );
 }
 
 Effect.BlindUp = function(element) {
-  Element.makeClipping(element);
+  element = $(element);
+  element.makeClipping();
   return new Effect.Scale(element, 0, 
     Object.extend({ scaleContent: false, 
       scaleX: false, 
-      afterFinish: function(effect) 
-        { 
-          Element.hide(effect.element);
-          Element.undoClipping(effect.element);
-        } 
+      restoreAfterFinish: true,
+      afterFinishInternal: function(effect) {
+        effect.element.hide();
+        effect.element.undoClipping();
+      } 
     }, arguments[1] || {})
   );
@@ -368 +603 @@
 
 Effect.BlindDown = function(element) {
-  $(element).style.height   = '0px';
-  Element.makeClipping(element);
-  Element.show(element);
+  element = $(element);
+  var elementDimensions = element.getDimensions();
   return new Effect.Scale(element, 100, 
     Object.extend({ scaleContent: false, 
-      scaleX: false, 
-      scaleMode: 'contents',
+      scaleX: false,
       scaleFrom: 0,
-      afterFinish: function(effect) {
-        Element.undoClipping(effect.element);
+      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] || {})
@@ -384 +624 @@
 
 Effect.SwitchOff = function(element) {
-  return new Effect.Appear(element,
-    { duration: 0.4,
-     transition: Effect.Transitions.flicker,
-     afterFinish: function(effect)
-      { effect.element.style.overflow = 'hidden';
-        new Effect.Scale(effect.element, 1, 
-         { duration: 0.3, scaleFromCenter: true,
-          scaleX: false, scaleContent: false,
-          afterUpdate: function(effect) { 
-           if(effect.element.style.position=="")
-             effect.element.style.position = 'relative'; },
-          afterFinish: function(effect) { Element.hide(effect.element); }
-         } )
+  element = $(element);
+  var oldOpacity = element.getInlineOpacity();
+  return new Effect.Appear(element, { 
+    duration: 0.4,
+    from: 0,
+    transition: Effect.Transitions.flicker,
+    afterFinishInternal: function(effect) {
+      new Effect.Scale(effect.element, 1, { 
+        duration: 0.3, scaleFromCenter: true,
+        scaleX: false, scaleContent: false, restoreAfterFinish: true,
+        beforeSetup: function(effect) { 
+          effect.element.makePositioned();
+          effect.element.makeClipping();
+        },
+        afterFinishInternal: function(effect) {
+          effect.element.hide();
+          effect.element.undoClipping();
+          effect.element.undoPositioned();
+          effect.element.setStyle({opacity: oldOpacity});
+        }
+      })
+    }
+  });
+}
+
+Effect.DropOut = function(element) {
+  element = $(element);
+  var oldStyle = {
+    top: element.getStyle('top'),
+    left: element.getStyle('left'),
+    opacity: element.getInlineOpacity() };
+  return new Effect.Parallel(
+    [ new Effect.Move(element, {x: 0, y: 100, sync: true }), 
+      new Effect.Opacity(element, { sync: true, to: 0.0 }) ],
+    Object.extend(
+      { duration: 0.5,
+        beforeSetup: function(effect) {
+          effect.effects[0].element.makePositioned(); 
+        },
+        afterFinishInternal: function(effect) {
+          effect.effects[0].element.hide();
+          effect.effects[0].element.undoPositioned();
+          effect.effects[0].element.setStyle(oldStyle);
+        } 
+      }, arguments[1] || {}));
+}
+
+Effect.Shake = function(element) {
+  element = $(element);
+  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) {
+    new Effect.Move(effect.element,
+      { x: -40, y: 0, duration: 0.1,  afterFinishInternal: function(effect) {
+    new Effect.Move(effect.element,
+      { x:  40, y: 0, duration: 0.1,  afterFinishInternal: function(effect) {
+    new Effect.Move(effect.element,
+      { x: -40, y: 0, duration: 0.1,  afterFinishInternal: function(effect) {
+    new Effect.Move(effect.element,
+      { x:  40, y: 0, duration: 0.1,  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);
+  }}) }}) }}) }}) }}) }});
+}
+
+Effect.SlideDown = function(element) {
+  element = $(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 elementDimensions = element.getDimensions();
+  return new Effect.Scale(element, 100, Object.extend({ 
+    scaleContent: false, 
+    scaleX: false, 
+    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(); },
+    afterUpdateInternal: function(effect) {
+      effect.element.firstChild.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.DropOut = function(element) {
-  return new Effect.Parallel(
-    [ new Effect.MoveBy(element, 100, 0, { sync: true }), 
-      new Effect.Opacity(element, { sync: true, to: 0.0, from: 1.0 } ) ], 
-    { duration: 0.5, 
-     afterFinish: function(effect)
-       { Element.hide(effect.effects[0].element); } 
-    });
-}
-
-Effect.Shake = function(element) {
-  return new Effect.MoveBy(element, 0, 20, 
-    { duration: 0.05, afterFinish: function(effect) {
-  new Effect.MoveBy(effect.element, 0, -40, 
-    { duration: 0.1, afterFinish: function(effect) { 
-  new Effect.MoveBy(effect.element, 0, 40, 
-    { duration: 0.1, afterFinish: function(effect) {  
-  new Effect.MoveBy(effect.element, 0, -40, 
-    { duration: 0.1, afterFinish: function(effect) {  
-  new Effect.MoveBy(effect.element, 0, 40, 
-    { duration: 0.1, afterFinish: function(effect) {  
-  new Effect.MoveBy(effect.element, 0, -20, 
-    { duration: 0.05, afterFinish: function(effect) {  
-  }}) }}) }}) }}) }}) }});
-}
-
-Effect.SlideDown = function(element) {
-  element = $(element);
-  element.style.height   = '0px';
-  Element.makeClipping(element);
-  Element.cleanWhitespace(element);
-  Element.makePositioned(element.firstChild);
-  Element.show(element);
-  return new Effect.Scale(element, 100, 
+      effect.element.firstChild.setStyle({bottom: oldInnerBottom}); }
+    }, arguments[1] || {})
+  );
+}
+  
+Effect.SlideUp = function(element) {
+  element = $(element);
+  element.cleanWhitespace();
+  var oldInnerBottom = $(element.firstChild).getStyle('bottom');
+  return new Effect.Scale(element, window.opera ? 0 : 1,
    Object.extend({ scaleContent: false, 
     scaleX: false, 
-    scaleMode: 'contents',
-    scaleFrom: 0,
-    afterUpdate: function(effect) 
-      { effect.element.firstChild.style.bottom = 
-          (effect.originalHeight - effect.element.clientHeight) + 'px'; },
-    afterFinish: function(effect) 
-      {  Element.undoClipping(effect.element); }
-    }, arguments[1] || {})
-  );
-}
-  
-Effect.SlideUp = function(element) {
-  element = $(element);
-  Element.makeClipping(element);
-  Element.cleanWhitespace(element);
-  Element.makePositioned(element.firstChild);
-  Element.show(element);
-  return new Effect.Scale(element, 0, 
-   Object.extend({ scaleContent: false, 
-    scaleX: false, 
-    afterUpdate: function(effect) 
-      { effect.element.firstChild.style.bottom = 
-          (effect.originalHeight - effect.element.clientHeight) + 'px'; },
-    afterFinish: function(effect)
-      { 
-        Element.hide(effect.element);
-        Element.undoClipping(effect.element);
-      }
+    scaleMode: 'box',
+    scaleFrom: 100,
+    restoreAfterFinish: true,
+    beforeStartInternal: function(effect) {
+      effect.element.makePositioned();
+      effect.element.firstChild.makePositioned();
+      if(window.opera) effect.element.setStyle({top: ''});
+      effect.element.makeClipping();
+      effect.element.show(); },  
+    afterUpdateInternal: function(effect) {
+      effect.element.firstChild.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] || {})
   );
 }
 
+// Bug in opera makes the TD containing this element expand for a instance after finish 
 Effect.Squish = function(element) {
- return new Effect.Scale(element, 0, 
-   { afterFinish: function(effect) { Element.hide(effect.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); }
+  });
 }
 
 Effect.Grow = function(element) {
   element = $(element);
-  var options = arguments[1] || {};
-  
-  var originalWidth = element.clientWidth;
-  var originalHeight = element.clientHeight;
-  element.style.overflow = 'hidden';
-  Element.show(element);
-  
-  var direction = options.direction || 'center';
-  var moveTransition = options.moveTransition || Effect.Transitions.sinoidal;
-  var scaleTransition = options.scaleTransition || Effect.Transitions.sinoidal;
-  var opacityTransition = options.opacityTransition || Effect.Transitions.full;
-  
+  var options = Object.extend({
+    direction: 'center',
+    moveTransition: Effect.Transitions.sinoidal,
+    scaleTransition: Effect.Transitions.sinoidal,
+    opacityTransition: Effect.Transitions.full
+  }, arguments[1] || {});
+  var oldStyle = {
+    top: element.style.top,
+    left: element.style.left,
+    height: element.style.height,
+    width: element.style.width,
+    opacity: element.getInlineOpacity() };
+
+  var dims = element.getDimensions();    
   var initialMoveX, initialMoveY;
   var moveX, moveY;
   
-  switch (direction) {
+  switch (options.direction) {
     case 'top-left':
       initialMoveX = initialMoveY = moveX = moveY = 0; 
       break;
     case 'top-right':
-      initialMoveX = originalWidth;
+      initialMoveX = dims.width;
       initialMoveY = moveY = 0;
-      moveX = -originalWidth;
+      moveX = -dims.width;
       break;
     case 'bottom-left':
       initialMoveX = moveX = 0;
-      initialMoveY = originalHeight;
-      moveY = -originalHeight;
+      initialMoveY = dims.height;
+      moveY = -dims.height;
       break;
     case 'bottom-right':
-      initialMoveX = originalWidth;
-      initialMoveY = originalHeight;
-      moveX = -originalWidth;
-      moveY = -originalHeight;
+      initialMoveX = dims.width;
+      initialMoveY = dims.height;
+      moveX = -dims.width;
+      moveY = -dims.height;
       break;
     case 'center':
-      initialMoveX = originalWidth / 2;
-      initialMoveY = originalHeight / 2;
-      moveX = -originalWidth / 2;
-      moveY = -originalHeight / 2;
+      initialMoveX = dims.width / 2;
+      initialMoveY = dims.height / 2;
+      moveX = -dims.width / 2;
+      moveY = -dims.height / 2;
       break;
   }
   
-  return new Effect.MoveBy(element, initialMoveY, initialMoveX, { 
+  return new Effect.Move(element, {
+    x: initialMoveX,
+    y: initialMoveY,
     duration: 0.01, 
-    beforeUpdate: function(effect) { $(element).style.height = '0px'; },
-    afterFinish: function(effect) {
+    beforeSetup: function(effect) {
+      effect.element.hide();
+      effect.element.makeClipping();
+      effect.element.makePositioned();
+    },
+    afterFinishInternal: function(effect) {
       new Effect.Parallel(
-        [ new Effect.Opacity(element, { sync: true, to: 1.0, from: 0.0, transition: opacityTransition }),
-          new Effect.MoveBy(element, moveY, moveX, { sync: true, transition: moveTransition }),
-          new Effect.Scale(element, 100, { 
-            scaleMode: { originalHeight: originalHeight, originalWidth: originalWidth }, 
-            sync: true, scaleFrom: 0, scaleTo: 100, transition: scaleTransition })],
-        options); }
-    });
+        [ new Effect.Opacity(effect.element, { sync: true, to: 1.0, from: 0.0, transition: options.opacityTransition }),
+          new Effect.Move(effect.element, { x: moveX, y: moveY, sync: true, transition: options.moveTransition }),
+          new Effect.Scale(effect.element, 100, {
+            scaleMode: { originalHeight: dims.height, originalWidth: dims.width }, 
+            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(); 
+             },
+             afterFinishInternal: function(effect) {
+               effect.effects[0].element.undoClipping();
+               effect.effects[0].element.undoPositioned();
+               effect.effects[0].element.setStyle(oldStyle); 
+             }
+           }, options)
+      )
+    }
+  });
 }
 
 Effect.Shrink = function(element) {
   element = $(element);
-  var options = arguments[1] || {};
-  
-  var originalWidth = element.clientWidth;
-  var originalHeight = element.clientHeight;
-  element.style.overflow = 'hidden';
-  Element.show(element);
-
-  var direction = options.direction || 'center';
-  var moveTransition = options.moveTransition || Effect.Transitions.sinoidal;
-  var scaleTransition = options.scaleTransition || Effect.Transitions.sinoidal;
-  var opacityTransition = options.opacityTransition || Effect.Transitions.none;
-  
+  var options = Object.extend({
+    direction: 'center',
+    moveTransition: Effect.Transitions.sinoidal,
+    scaleTransition: Effect.Transitions.sinoidal,
+    opacityTransition: Effect.Transitions.none
+  }, arguments[1] || {});
+  var oldStyle = {
+    top: element.style.top,
+    left: element.style.left,
+    height: element.style.height,
+    width: element.style.width,
+    opacity: element.getInlineOpacity() };
+
+  var dims = element.getDimensions();
   var moveX, moveY;
   
-  switch (direction) {
+  switch (options.direction) {
     case 'top-left':
       moveX = moveY = 0;
       break;
     case 'top-right':
-      moveX = originalWidth;
+      moveX = dims.width;
       moveY = 0;
       break;
     case 'bottom-left':
       moveX = 0;
-      moveY = originalHeight;
+      moveY = dims.height;
       break;
     case 'bottom-right':
-      moveX = originalWidth;
-      moveY = originalHeight;
+      moveX = dims.width;
+      moveY = dims.height;
       break;
     case 'center':  
-      moveX = originalWidth / 2;
-      moveY = originalHeight / 2;
+      moveX = dims.width / 2;
+      moveY = dims.height / 2;
       break;
   }
   
   return new Effect.Parallel(
-    [ new Effect.Opacity(element, { sync: true, to: 0.0, from: 1.0, transition: opacityTransition }),
-      new Effect.Scale(element, 0, { sync: true, transition: moveTransition }),
-      new Effect.MoveBy(element, moveY, moveX, { sync: true, transition: scaleTransition }) ],
-    options);
+    [ new Effect.Opacity(element, { sync: true, to: 0.0, from: 1.0, transition: options.opacityTransition }),
+      new Effect.Scale(element, window.opera ? 1 : 0, { sync: true, transition: options.scaleTransition, restoreAfterFinish: true}),
+      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(); },
+         afterFinishInternal: function(effect) {
+           effect.effects[0].element.hide();
+           effect.effects[0].element.undoClipping();
+           effect.effects[0].element.undoPositioned();
+           effect.effects[0].element.setStyle(oldStyle); }
+       }, options)
+  );
 }
 
 Effect.Pulsate = function(element) {
+  element = $(element);
   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)) };
   reverser.bind(transition);
   return new Effect.Opacity(element, 
-    Object.extend(Object.extend({  duration: 3.0,
-       afterFinish: function(effect) { Element.show(effect.element); }
+    Object.extend(Object.extend({  duration: 3.0, from: 0,
+      afterFinishInternal: function(effect) { effect.element.setStyle({opacity: oldOpacity}); }
     }, options), {transition: reverser}));
 }
 
 Effect.Fold = function(element) {
- $(element).style.overflow = 'hidden';
- return new Effect.Scale(element, 5, Object.extend({   
-   scaleContent: false,
-   scaleTo: 100,
-   scaleX: false,
-   afterFinish: function(effect) {
-   new Effect.Scale(element, 1, { 
-     scaleContent: false, 
-     scaleTo: 0,
-     scaleY: false,
-     afterFinish: function(effect) { Element.hide(effect.element) } });
- }}, arguments[1] || {}));
-}
-
-// old: new Effect.ContentZoom(element, percent)
-// new: Element.setContentZoom(element, percent) 
-
-Element.setContentZoom = function(element, percent) {
-  var element = $(element);
-  element.style.fontSize = (percent/100) + "em";  
-  if(navigator.appVersion.indexOf('AppleWebKit')>0) window.scrollBy(0,0);
-}
+  element = $(element);
+  var oldStyle = {
+    top: element.style.top,
+    left: element.style.left,
+    width: element.style.width,
+    height: element.style.height };
+  Element.makeClipping(element);
+  return new Effect.Scale(element, 5, Object.extend({   
+    scaleContent: false,
+    scaleX: false,
+    afterFinishInternal: function(effect) {
+    new Effect.Scale(element, 1, { 
+      scaleContent: false, 
+      scaleY: false,
+      afterFinishInternal: function(effect) {
+        effect.element.hide();
+        effect.element.undoClipping(); 
+        effect.element.setStyle(oldStyle);
+      } });
+  }}, arguments[1] || {}));
+};
+
+['setOpacity','getOpacity','getInlineOpacity','forceRerendering','setContentZoom',
+ 'collectTextNodes','collectTextNodesIgnoreClass','childrenWithClassName'].each( 
+  function(f) { Element.Methods[f] = Element[f]; }
+);
+
+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);
+};
+
+Element.addMethods();

trunk/trax/data/public/javascripts/prototype.js

@@ -1 @@
-// $Id$
-/*  Prototype JavaScript framework, version 1.3.0
+/*  Prototype JavaScript framework, version 1.5.0_rc0
  *  (c) 2005 Sam Stephenson <sam@conio.net>
  *
- *  THIS FILE IS AUTOMATICALLY GENERATED. When sending patches, please diff
- *  against the source tree, available from the Prototype darcs repository. 
- *
  *  Prototype is freely distributable under the terms of an MIT-style license.
- *
  *  For details, see the Prototype web site: http://prototype.conio.net/
  *
@@ -13 +8 @@
 
 var Prototype = {
-  Version: '1.3.0',
-  emptyFunction: function() {}
+  Version: '1.5.0_rc0',
+  ScriptFragment: '(?:<script.*?>)((\n|\r|.)*?)(?:<\/script>)',
+
+  emptyFunction: function() {},
+  K: function(x) {return x}
 }
 
 var Class = {
   create: function() {
-    return function() { 
+    return function() {
       this.initialize.apply(this, arguments);
     }
@@ -28 +26 @@
 
 Object.extend = function(destination, source) {
-  for (property in source) {
+  for (var property in source) {
     destination[property] = source[property];
   }
@@ -34 +32 @@
 }
 
-Object.prototype.extend = function(object) {
-  return Object.extend.apply(this, [this, object]);
-}
-
-Function.prototype.bind = function(object) {
-  var __method = this;
+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;
+  }
+}
+
+Function.prototype.bind = function() {
+  var __method = this, args = $A(arguments), object = args.shift();
   return function() {
-    __method.apply(object, arguments);
+    return __method.apply(object, args.concat($A(arguments)));
   }
 }
@@ -48 +53 @@
   var __method = this;
   return function(event) {
-    __method.call(object, event || window.event);
-  }
-}
-
-Number.prototype.toColorPart = function() {
-  var digits = this.toString(16);
-  if (this < 16) return '0' + digits;
-  return digits;
-}
+    return __method.call(object, event || window.event);
+  }
+}
+
+Object.extend(Number.prototype, {
+  toColorPart: function() {
+    var digits = this.toString(16);
+    if (this < 16) return '0' + digits;
+    return digits;
+  },
+
+  succ: function() {
+    return this + 1;
+  },
+
+  times: function(iterator) {
+    $R(0, this, true).each(iterator);
+    return this;
+  }
+});
 
 var Try = {
@@ -92 +108 @@
   onTimerEvent: function() {
     if (!this.currentlyExecuting) {
-      try { 
+      try {
         this.currentlyExecuting = true;
-        this.callback(); 
-      } finally { 
+        this.callback();
+      } finally {
         this.currentlyExecuting = false;
       }
@@ -101 +117 @@
   }
 }
-
-/*--------------------------------------------------------------------------*/
-
-function $() {
-  var elements = new Array();
-
-  for (var i = 0; i < arguments.length; i++) {
-    var element = arguments[i];
-    if (typeof element == 'string')
-      element = document.getElementById(element);
-
-    if (arguments.length == 1) 
-      return element;
-
-    elements.push(element);
-  }
-
-  return elements;
-}
-
-if (!Array.prototype.push) {
-  Array.prototype.push = function() {
-        var startLength = this.length;
-        for (var i = 0; i < arguments.length; i++)
-      this[startLength + i] = arguments[i];
-      return this.length;
-  }
-}
-
-if (!Function.prototype.apply) {
-  // Based on code from http://www.youngpup.net/
-  Function.prototype.apply = function(object, parameters) {
-    var parameterStrings = new Array();
-    if (!object)     object = window;
-    if (!parameters) parameters = new Array();
-    
-    for (var i = 0; i < parameters.length; i++)
-      parameterStrings[i] = 'parameters[' + i + ']';
-    
-    object.__apply__ = this;
-    var result = eval('object.__apply__(' + 
-      parameterStrings[i].join(', ') + ')');
-    object.__apply__ = null;
-    
+Object.extend(String.prototype, {
+  gsub: function(pattern, replacement) {
+    var result = '', source = this, match;
+    replacement = arguments.callee.prepareReplacement(replacement);
+
+    while (source.length > 0) {
+      if (match = source.match(pattern)) {
+        result += source.slice(0, match.index);
+        result += (replacement(match) || '').toString();
+        source  = source.slice(match.index + match[0].length);
+      } else {
+        result += source, source = '';
+      }
+    }
     return result;
-  }
-}
-
-String.prototype.extend({
+  },
+
+  sub: function(pattern, replacement, count) {
+    replacement = this.gsub.prepareReplacement(replacement);
+    count = count === undefined ? 1 : count;
+
+    return this.gsub(pattern, function(match) {
+      if (--count < 0) return match[0];
+      return replacement(match);
+    });
+  },
+
+  scan: function(pattern, iterator) {
+    this.gsub(pattern, iterator);
+    return this;
+  },
+
+  truncate: function(length, truncation) {
+    length = length || 30;
+    truncation = truncation === undefined ? '...' : truncation;
+    return this.length > length ?
+      this.slice(0, length - truncation.length) + truncation : this;
+  },
+
+  strip: function() {
+    return this.replace(/^\s+/, '').replace(/\s+$/, '');
+  },
+
   stripTags: function() {
     return this.replace(/<\/?[^>]+>/gi, '');
+  },
+
+  stripScripts: function() {
+    return this.replace(new RegExp(Prototype.ScriptFragment, 'img'), '');
+  },
+
+  extractScripts: function() {
+    var matchAll = new RegExp(Prototype.ScriptFragment, 'img');
+    var matchOne = new RegExp(Prototype.ScriptFragment, 'im');
+    return (this.match(matchAll) || []).map(function(scriptTag) {
+      return (scriptTag.match(matchOne) || ['', ''])[1];
+    });
+  },
+
+  evalScripts: function() {
+    return this.extractScripts().map(function(script) { return eval(script) });
   },
 
@@ -164 +190 @@
     var div = document.createElement('div');
     div.innerHTML = this.stripTags();
-    return div.childNodes[0].nodeValue;
+    return div.childNodes[0] ? 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;
+    });
+  },
+
+  toArray: function() {
+    return this.split('');
+  },
+
+  camelize: function() {
+    var oStringList = this.split('-');
+    if (oStringList.length == 1) return oStringList[0];
+
+    var camelizedString = this.indexOf('-') == 0
+      ? oStringList[0].charAt(0).toUpperCase() + oStringList[0].substring(1)
+      : oStringList[0];
+
+    for (var i = 1, len = oStringList.length; i < len; i++) {
+      var s = oStringList[i];
+      camelizedString += s.charAt(0).toUpperCase() + s.substring(1);
+    }
+
+    return camelizedString;
+  },
+
+  inspect: function() {
+    return "'" + this.replace(/\\/g, '\\\\').replace(/'/g, '\\\'') + "'";
   }
 });
+
+String.prototype.gsub.prepareReplacement = function(replacement) {
+  if (typeof replacement == 'function') 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 = {
+  initialize: function(template, pattern) {
+    this.template = template.toString();
+    this.pattern  = pattern || Template.Pattern;
+  },
+
+  evaluate: function(object) {
+    return this.template.gsub(this.pattern, function(match) {
+      var before = match[1];
+      if (before == '\\') return match[2];
+      return before + (object[match[3]] || '').toString();
+    });
+  }
+}
+
+var $break    = new Object();
+var $continue = new Object();
+
+var Enumerable = {
+  each: function(iterator) {
+    var index = 0;
+    try {
+      this._each(function(value) {
+        try {
+          iterator(value, index++);
+        } catch (e) {
+          if (e != $continue) throw e;
+        }
+      });
+    } catch (e) {
+      if (e != $break) throw e;
+    }
+  },
+
+  all: function(iterator) {
+    var result = true;
+    this.each(function(value, index) {
+      result = result && !!(iterator || Prototype.K)(value, index);
+      if (!result) throw $break;
+    });
+    return result;
+  },
+
+  any: function(iterator) {
+    var result = true;
+    this.each(function(value, index) {
+      if (result = !!(iterator || Prototype.K)(value, index))
+        throw $break;
+    });
+    return result;
+  },
+
+  collect: function(iterator) {
+    var results = [];
+    this.each(function(value, index) {
+      results.push(iterator(value, index));
+    });
+    return results;
+  },
+
+  detect: function (iterator) {
+    var result;
+    this.each(function(value, index) {
+      if (iterator(value, index)) {
+        result = value;
+        throw $break;
+      }
+    });
+    return result;
+  },
+
+  findAll: function(iterator) {
+    var results = [];
+    this.each(function(value, index) {
+      if (iterator(value, index))
+        results.push(value);
+    });
+    return results;
+  },
+
+  grep: function(pattern, iterator) {
+    var results = [];
+    this.each(function(value, index) {
+      var stringValue = value.toString();
+      if (stringValue.match(pattern))
+        results.push((iterator || Prototype.K)(value, index));
+    })
+    return results;
+  },
+
+  include: function(object) {
+    var found = false;
+    this.each(function(value) {
+      if (value == object) {
+        found = true;
+        throw $break;
+      }
+    });
+    return found;
+  },
+
+  inject: function(memo, iterator) {
+    this.each(function(value, index) {
+      memo = iterator(memo, value, index);
+    });
+    return memo;
+  },
+
+  invoke: function(method) {
+    var args = $A(arguments).slice(1);
+    return this.collect(function(value) {
+      return value[method].apply(value, args);
+    });
+  },
+
+  max: function(iterator) {
+    var result;
+    this.each(function(value, index) {
+      value = (iterator || Prototype.K)(value, index);
+      if (result == undefined || value >= result)
+        result = value;
+    });
+    return result;
+  },
+
+  min: function(iterator) {
+    var result;
+    this.each(function(value, index) {
+      value = (iterator || Prototype.K)(value, index);
+      if (result == undefined || value < result)
+        result = value;
+    });
+    return result;
+  },
+
+  partition: function(iterator) {
+    var trues = [], falses = [];
+    this.each(function(value, index) {
+      ((iterator || Prototype.K)(value, index) ?
+        trues : falses).push(value);
+    });
+    return [trues, falses];
+  },
+
+  pluck: function(property) {
+    var results = [];
+    this.each(function(value, index) {
+      results.push(value[property]);
+    });
+    return results;
+  },
+
+  reject: function(iterator) {
+    var results = [];
+    this.each(function(value, index) {
+      if (!iterator(value, index))
+        results.push(value);
+    });
+    return results;
+  },
+
+  sortBy: function(iterator) {
+    return this.collect(function(value, index) {
+      return {value: value, criteria: iterator(value, index)};
+    }).sort(function(left, right) {
+      var a = left.criteria, b = right.criteria;
+      return a < b ? -1 : a > b ? 1 : 0;
+    }).pluck('value');
+  },
+
+  toArray: function() {
+    return this.collect(Prototype.K);
+  },
+
+  zip: function() {
+    var iterator = Prototype.K, args = $A(arguments);
+    if (typeof args.last() == 'function')
+      iterator = args.pop();
+
+    var collections = [this].concat(args).map($A);
+    return this.map(function(value, index) {
+      return iterator(collections.pluck(index));
+    });
+  },
+
+  inspect: function() {
+    return '#<Enumerable:' + this.toArray().inspect() + '>';
+  }
+}
+
+Object.extend(Enumerable, {
+  map:     Enumerable.collect,
+  find:    Enumerable.detect,
+  select:  Enumerable.findAll,
+  member:  Enumerable.include,
+  entries: Enumerable.toArray
+});
+var $A = Array.from = function(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]);
+    return results;
+  }
+}
+
+Object.extend(Array.prototype, Enumerable);
+
+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++)
+      iterator(this[i]);
+  },
+
+  clear: function() {
+    this.length = 0;
+    return this;
+  },
+
+  first: function() {
+    return this[0];
+  },
+
+  last: function() {
+    return this[this.length - 1];
+  },
+
+  compact: function() {
+    return this.select(function(value) {
+      return value != undefined || value != null;
+    });
+  },
+
+  flatten: function() {
+    return this.inject([], function(array, value) {
+      return array.concat(value && value.constructor == Array ?
+        value.flatten() : [value]);
+    });
+  },
+
+  without: function() {
+    var values = $A(arguments);
+    return this.select(function(value) {
+      return !values.include(value);
+    });
+  },
+
+  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();
+  },
+
+  inspect: function() {
+    return '[' + this.map(Object.inspect).join(', ') + ']';
+  }
+});
+var Hash = {
+  _each: function(iterator) {
+    for (var key in this) {
+      var value = this[key];
+      if (typeof value == 'function') continue;
+
+      var pair = [key, value];
+      pair.key = key;
+      pair.value = value;
+      iterator(pair);
+    }
+  },
+
+  keys: function() {
+    return this.pluck('key');
+  },
+
+  values: function() {
+    return this.pluck('value');
+  },
+
+  merge: function(hash) {
+    return $H(hash).inject($H(this), function(mergedHash, pair) {
+      mergedHash[pair.key] = pair.value;
+      return mergedHash;
+    });
+  },
+
+  toQueryString: function() {
+    return this.map(function(pair) {
+      return pair.map(encodeURIComponent).join('=');
+    }).join('&');
+  },
+
+  inspect: function() {
+    return '#<Hash:{' + this.map(function(pair) {
+      return pair.map(Object.inspect).join(': ');
+    }).join(', ') + '}>';
+  }
+}
+
+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, {
+  initialize: function(start, end, exclusive) {
+    this.start = start;
+    this.end = end;
+    this.exclusive = exclusive;
+  },
+
+  _each: function(iterator) {
+    var value = this.start;
+    do {
+      iterator(value);
+      value = value.succ();
+    } while (this.include(value));
+  },
+
+  include: function(value) {
+    if (value < this.start)
+      return false;
+    if (this.exclusive)
+      return value < this.end;
+    return value <= this.end;
+  }
+});
+
+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: [],
+
+  _each: function(iterator) {
+    this.responders._each(iterator);
+  },
+
+  register: function(responderToAdd) {
+    if (!this.include(responderToAdd))
+      this.responders.push(responderToAdd);
+  },
+
+  unregister: function(responderToRemove) {
+    this.responders = this.responders.without(responderToRemove);
+  },
+
+  dispatch: function(callback, request, transport, json) {
+    this.each(function(responder) {
+      if (responder[callback] && typeof responder[callback] == 'function') {
+        try {
+          responder[callback].apply(responder, [request, transport, json]);
+        } catch (e) {}
+      }
+    });
+  }
+};
+
+Object.extend(Ajax.Responders, Enumerable);
+
+Ajax.Responders.register({
+  onCreate: function() {
+    Ajax.activeRequestCount++;
+  },
+
+  onComplete: function() {
+    Ajax.activeRequestCount--;
+  }
+});
 
 Ajax.Base = function() {};
@@ -184 +638 @@
       method:       'post',
       asynchronous: true,
+      contentType:  'application/x-www-form-urlencoded',
       parameters:   ''
-    }.extend(options || {});
+    }
+    Object.extend(this.options, options || {});
   },
 
   responseIsSuccess: function() {
     return this.transport.status == undefined
-        || this.transport.status == 0 
+        || this.transport.status == 0
         || (this.transport.status >= 200 && this.transport.status < 300);
   },
@@ -200 +656 @@
 
 Ajax.Request = Class.create();
-Ajax.Request.Events = 
+Ajax.Request.Events =
   ['Uninitialized', 'Loading', 'Loaded', 'Interactive', 'Complete'];
 
-Ajax.Request.prototype = (new Ajax.Base()).extend({
+Ajax.Request.prototype = Object.extend(new Ajax.Base(), {
   initialize: function(url, options) {
     this.transport = Ajax.getTransport();
@@ -215 +671 @@
 
     try {
-      if (this.options.method == 'get')
-        url += '?' + parameters;
-
-      this.transport.open(this.options.method, url,
+      this.url = url;
+      if (this.options.method == 'get' && parameters.length > 0)
+        this.url += (this.url.match(/\?/) ? '&' : '?') + parameters;
+
+      Ajax.Responders.dispatch('onCreate', this, this.transport);
+
+      this.transport.open(this.options.method, this.url,
         this.options.asynchronous);
 
@@ -232 +691 @@
 
     } catch (e) {
+      this.dispatchException(e);
     }
   },
 
   setRequestHeaders: function() {
-    var requestHeaders = 
+    var requestHeaders =
       ['X-Requested-With', 'XMLHttpRequest',
-       'X-Prototype-Version', Prototype.Version];
+       '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');
+      requestHeaders.push('Content-type', this.options.contentType);
 
       /* Force "Connection: close" for Mozilla browsers to work around
        * a bug where XMLHttpReqeuest sends an incorrect Content-length
-       * header. See Mozilla Bugzilla #246651. 
+       * header. See Mozilla Bugzilla #246651.
        */
       if (this.transport.overrideMimeType)
@@ -265 +725 @@
   },
 
+  header: function(name) {
+    try {
+      return this.transport.getResponseHeader(name);
+    } catch (e) {}
+  },
+
+  evalJSON: function() {
+    try {
+      return eval('(' + this.header('X-JSON') + ')');
+    } catch (e) {}
+  },
+
+  evalResponse: function() {
+    try {
+      return eval(this.transport.responseText);
+    } catch (e) {
+      this.dispatchException(e);
+    }
+  },
+
   respondToReadyState: function(readyState) {
     var event = Ajax.Request.Events[readyState];
-
-    if (event == 'Complete' && this.responseIsFailure())
-      (this.options['on' + this.transport.status]
-       || this.options.onFailure
-       || Prototype.emptyFunction)(this.transport);
-
-    (this.options['on' + event] || Prototype.emptyFunction)(this.transport);    
+    var transport = this.transport, json = this.evalJSON();
+
+    if (event == 'Complete') {
+      try {
+        (this.options['on' + this.transport.status]
+         || this.options['on' + (this.responseIsSuccess() ? 'Success' : 'Failure')]
+         || Prototype.emptyFunction)(transport, json);
+      } catch (e) {
+        this.dispatchException(e);
+      }
+
+      if ((this.header('Content-type') || '').match(/^text\/javascript/i))
+        this.evalResponse();
+    }
+
+    try {
+      (this.options['on' + event] || Prototype.emptyFunction)(transport, json);
+      Ajax.Responders.dispatch('on' + event, this, transport, json);
+    } catch (e) {
+      this.dispatchException(e);
+    }
+
+    /* Avoid memory leak in MSIE: clean up the oncomplete event handler */
+    if (event == 'Complete')
+      this.transport.onreadystatechange = Prototype.emptyFunction;
+  },
+
+  dispatchException: function(exception) {
+    (this.options.onException || Prototype.emptyFunction)(this, exception);
+    Ajax.Responders.dispatch('onException', this, exception);
   }
 });
 
 Ajax.Updater = Class.create();
-Ajax.Updater.ScriptFragment = '(?:<script.*?>)((\n|.)*?)(?:<\/script>)';
-
-Ajax.Updater.prototype.extend(Ajax.Request.prototype).extend({
+
+Object.extend(Object.extend(Ajax.Updater.prototype, Ajax.Request.prototype), {
   initialize: function(container, url, options) {
     this.containers = {
@@ -292 +794 @@
 
     var onComplete = this.options.onComplete || Prototype.emptyFunction;
-    this.options.onComplete = (function() {
+    this.options.onComplete = (function(transport, object) {
       this.updateContent();
-      onComplete(this.transport);      
+      onComplete(transport, object);
     }).bind(this);
 
@@ -303 +805 @@
     var receiver = this.responseIsSuccess() ?
       this.containers.success : this.containers.failure;
-
-    var match    = new RegExp(Ajax.Updater.ScriptFragment, 'img');
-    var response = this.transport.responseText.replace(match, '');
-    var scripts  = this.transport.responseText.match(match);
+    var response = this.transport.responseText;
+
+    if (!this.options.evalScripts)
+      response = response.stripScripts();
 
     if (receiver) {
@@ -312 +814 @@
         new this.options.insertion(receiver, response);
       } else {
-        receiver.innerHTML = response;
+        Element.update(receiver, response);
       }
     }
@@ -318 +820 @@
     if (this.responseIsSuccess()) {
       if (this.onComplete)
-        setTimeout((function() {this.onComplete(
-          this.transport)}).bind(this), 10);
-    }
-
-    if (this.options.evalScripts && scripts) {
-      match = new RegExp(Ajax.Updater.ScriptFragment, 'im');
-      setTimeout((function() {
-        for (var i = 0; i < scripts.length; i++)
-          eval(scripts[i].match(match)[1]);
-      }).bind(this), 10);
+        setTimeout(this.onComplete.bind(this), 10);
     }
   }
@@ -333 +826 @@
 
 Ajax.PeriodicalUpdater = Class.create();
-Ajax.PeriodicalUpdater.prototype = (new Ajax.Base()).extend({
+Ajax.PeriodicalUpdater.prototype = Object.extend(new Ajax.Base(), {
   initialize: function(container, url, options) {
     this.setOptions(options);
@@ -339 +832 @@
 
     this.frequency = (this.options.frequency || 2);
-    this.decay = 1;
+    this.decay = (this.options.decay || 1);
 
     this.updater = {};
@@ -356 +849 @@
     this.updater.onComplete = undefined;
     clearTimeout(this.timer);
-    (this.onComplete || Ajax.emptyFunction).apply(this, arguments);
+    (this.onComplete || Prototype.emptyFunction).apply(this, arguments);
   },
 
   updateComplete: function(request) {
     if (this.options.decay) {
-      this.decay = (request.responseText == this.lastText ? 
+      this.decay = (request.responseText == this.lastText ?
         this.decay * this.options.decay : 1);
 
       this.lastText = request.responseText;
     }
-    this.timer = setTimeout(this.onTimerEvent.bind(this), 
+    this.timer = setTimeout(this.onTimerEvent.bind(this),
       this.decay * this.frequency * 1000);
   },
@@ -374 +867 @@
   }
 });
-
-document.getElementsByClassName = function(className) {
-  var children = document.getElementsByTagName('*') || document.all;
-  var elements = new Array();
-  
-  for (var i = 0; i < children.length; i++) {
-    var child = children[i];
-    var classNames = child.className.split(' ');
-    for (var j = 0; j < classNames.length; j++) {
-      if (classNames[j] == className) {
-        elements.push(child);
-        break;
-      }
-    }
-  }
-  
-  return elements;
+function $() {
+  var results = [], element;
+  for (var i = 0; i < arguments.length; i++) {
+    element = arguments[i];
+    if (typeof element == 'string')
+      element = document.getElementById(element);
+    results.push(Element.extend(element));
+  }
+  return results.length < 2 ? results[0] : results;
+}
+
+document.getElementsByClassName = function(className, parentElement) {
+  var children = ($(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 (!window.Element) {
+if (!window.Element)
   var Element = new Object();
-}
-
-Object.extend(Element, {
+
+Element.extend = function(element) {
+  if (!element) return;
+  if (_nativeExtensions) return element;
+
+  if (!element._extended && element.tagName && element != window) {
+    var methods = Element.Methods, cache = Element.extend.cache;
+    for (property in methods) {
+      var value = methods[property];
+      if (typeof value == 'function')
+        element[property] = cache.findOrStore(value);
+    }
+  }
+
+  element._extended = true;
+  return element;
+}
+
+Element.extend.cache = {
+  findOrStore: function(value) {
+    return this[value] = this[value] || function() {
+      return value.apply(null, [this].concat($A(arguments)));
+    }
+  }
+}
+
+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.style.display = 
-        (element.style.display == 'none' ? '' : 'none');
+      Element[Element.visible(element) ? 'hide' : 'show'](element);
     }
   },
@@ -426 +947 @@
     element.parentNode.removeChild(element);
   },
-   
+
+  update: function(element, html) {
+    $(element).innerHTML = html.stripScripts();
+    setTimeout(function() {html.evalScripts()}, 10);
+  },
+
+  replace: function(element, html) {
+    element = $(element);
+    if (element.outerHTML) {
+      element.outerHTML = html.stripScripts();
+    } else {
+      var range = element.ownerDocument.createRange();
+      range.selectNodeContents(element);
+      element.parentNode.replaceChild(
+        range.createContextualFragment(html.stripScripts()), element);
+    }
+    setTimeout(function() {html.evalScripts()}, 10);
+  },
+
   getHeight: function(element) {
     element = $(element);
-    return element.offsetHeight; 
+    return element.offsetHeight;
+  },
+
+  classNames: function(element) {
+    return new Element.ClassNames(element);
   },
 
   hasClassName: function(element, className) {
-    element = $(element);
-    if (!element)
-      return;
-    var a = element.className.split(' ');
-    for (var i = 0; i < a.length; i++) {
-      if (a[i] == className)
-        return true;
-    }
-    return false;
+    if (!(element = $(element))) return;
+    return Element.classNames(element).include(className);
   },
 
   addClassName: function(element, className) {
-    element = $(element);
-    Element.removeClassName(element, className);
-    element.className += ' ' + className;
+    if (!(element = $(element))) return;
+    return Element.classNames(element).add(className);
   },
 
   removeClassName: function(element, className) {
-    element = $(element);
-    if (!element)
-      return;
-    var newClassName = '';
-    var a = element.className.split(' ');
-    for (var i = 0; i < a.length; i++) {
-      if (a[i] != className) {
-        if (i > 0)
-          newClassName += ' ';
-        newClassName += a[i];
-      }
-    }
-    element.className = newClassName;
-  },
-  
+    if (!(element = $(element))) return;
+    return Element.classNames(element).remove(className);
+  },
+
   // removes whitespace-only text node children
   cleanWhitespace: function(element) {
-    var element = $(element);
+    element = $(element);
     for (var i = 0; i < element.childNodes.length; i++) {
       var node = element.childNodes[i];
-      if (node.nodeType == 3 && !/\S/.test(node.nodeValue)) 
+      if (node.nodeType == 3 && !/\S/.test(node.nodeValue))
         Element.remove(node);
     }
-  }
-});
+  },
+
+  empty: function(element) {
+    return $(element).innerHTML.match(/^\s*$/);
+  },
+
+  childOf: function(element, ancestor) {
+    element = $(element), ancestor = $(ancestor);
+    while (element = element.parentNode)
+      if (element == ancestor) 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);
+  },
+
+  getStyle: function(element, style) {
+    element = $(element);
+    var value = element.style[style.camelize()];
+    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()];
+      }
+    }
+
+    if (window.opera && ['left', 'top', 'right', 'bottom'].include(style))
+      if (Element.getStyle(element, 'position') == 'static') value = 'auto';
+
+    return value == 'auto' ? null : value;
+  },
+
+  setStyle: function(element, style) {
+    element = $(element);
+    for (var name in style)
+      element.style[name.camelize()] = style[name];
+  },
+
+  getDimensions: function(element) {
+    element = $(element);
+    if (Element.getStyle(element, 'display') != 'none')
+      return {width: element.offsetWidth, height: element.offsetHeight};
+
+    // All *Width and *Height properties give 0 on elements with display none,
+    // so enable the element temporarily
+    var els = element.style;
+    var originalVisibility = els.visibility;
+    var originalPosition = els.position;
+    els.visibility = 'hidden';
+    els.position = 'absolute';
+    els.display = '';
+    var originalWidth = element.clientWidth;
+    var originalHeight = element.clientHeight;
+    els.display = 'none';
+    els.position = originalPosition;
+    els.visibility = originalVisibility;
+    return {width: originalWidth, height: originalHeight};
+  },
+
+  makePositioned: function(element) {
+    element = $(element);
+    var pos = Element.getStyle(element, 'position');
+    if (pos == 'static' || !pos) {
+      element._madePositioned = true;
+      element.style.position = 'relative';
+      // Opera returns the offset relative to the positioning context, when an
+      // element is position relative but top and left have not been defined
+      if (window.opera) {
+        element.style.top = 0;
+        element.style.left = 0;
+      }
+    }
+  },
+
+  undoPositioned: function(element) {
+    element = $(element);
+    if (element._madePositioned) {
+      element._madePositioned = undefined;
+      element.style.position =
+        element.style.top =
+        element.style.left =
+        element.style.bottom =
+        element.style.right = '';
+    }
+  },
+
+  makeClipping: function(element) {
+    element = $(element);
+    if (element._overflow) return;
+    element._overflow = element.style.overflow;
+    if ((Element.getStyle(element, 'overflow') || 'visible') != 'hidden')
+      element.style.overflow = 'hidden';
+  },
+
+  undoClipping: function(element) {
+    element = $(element);
+    if (element._overflow) return;
+    element.style.overflow = element._overflow;
+    element._overflow = undefined;
+  }
+}
+
+Object.extend(Element, Element.Methods);
+
+var _nativeExtensions = false;
+
+if(!HTMLElement && /Konqueror|Safari|KHTML/.test(navigator.userAgent)) {
+  var HTMLElement = {}
+  HTMLElement.prototype = document.createElement('div').__proto__;
+}
+
+Element.addMethods = function(methods) {
+  Object.extend(Element.Methods, methods || {});
+
+  if(typeof HTMLElement != 'undefined') {
+    var methods = Element.Methods, cache = Element.extend.cache;
+    for (property in methods) {
+      var value = methods[property];
+      if (typeof value == 'function')
+        HTMLElement.prototype[property] = cache.findOrStore(value);
+    }
+    _nativeExtensions = true;
+  }
+}
+
+Element.addMethods();
 
 var Toggle = new Object();
@@ -489 +1143 @@
   initialize: function(element, content) {
     this.element = $(element);
-    this.content = content;
-    
+    this.content = content.stripScripts();
+
     if (this.adjacency && this.element.insertAdjacentHTML) {
-      this.element.insertAdjacentHTML(this.adjacency, this.content);
+      try {
+        this.element.insertAdjacentHTML(this.adjacency, this.content);
+      } catch (e) {
+        var tagName = this.element.tagName.toLowerCase();
+        if (tagName == 'tbody' || tagName == 'tr') {
+          this.insertContent(this.contentFromAnonymousTable());
+        } else {
+          throw e;
+        }
+      }
     } else {
       this.range = this.element.ownerDocument.createRange();
       if (this.initializeRange) this.initializeRange();
-      this.fragment = this.range.createContextualFragment(this.content);
-      this.insertContent();
-    }
+      this.insertContent([this.range.createContextualFragment(this.content)]);
+    }
+
+    setTimeout(function() {content.evalScripts()}, 10);
+  },
+
+  contentFromAnonymousTable: function() {
+    var div = document.createElement('div');
+    div.innerHTML = '<table><tbody>' + this.content + '</tbody></table>';
+    return $A(div.childNodes[0].childNodes[0].childNodes);
   }
 }
@@ -505 +1175 @@
 
 Insertion.Before = Class.create();
-Insertion.Before.prototype = (new Abstract.Insertion('beforeBegin')).extend({
+Insertion.Before.prototype = Object.extend(new Abstract.Insertion('beforeBegin'), {
   initializeRange: function() {
     this.range.setStartBefore(this.element);
   },
-  
-  insertContent: function() {
-    this.element.parentNode.insertBefore(this.fragment, this.element);
+
+  insertContent: function(fragments) {
+    fragments.each((function(fragment) {
+      this.element.parentNode.insertBefore(fragment, this.element);
+    }).bind(this));
   }
 });
 
 Insertion.Top = Class.create();
-Insertion.Top.prototype = (new Abstract.Insertion('afterBegin')).extend({
+Insertion.Top.prototype = Object.extend(new Abstract.Insertion('afterBegin'), {
   initializeRange: function() {
     this.range.selectNodeContents(this.element);
     this.range.collapse(true);
   },
-  
-  insertContent: function() {  
-    this.element.insertBefore(this.fragment, this.element.firstChild);
+
+  insertContent: function(fragments) {
+    fragments.reverse(false).each((function(fragment) {
+      this.element.insertBefore(fragment, this.element.firstChild);
+    }).bind(this));
   }
 });
 
 Insertion.Bottom = Class.create();
-Insertion.Bottom.prototype = (new Abstract.Insertion('beforeEnd')).extend({
+Insertion.Bottom.prototype = Object.extend(new Abstract.Insertion('beforeEnd'), {
   initializeRange: function() {
     this.range.selectNodeContents(this.element);
     this.range.collapse(this.element);
   },
-  
-  insertContent: function() {
-    this.element.appendChild(this.fragment);
+
+  insertContent: function(fragments) {
+    fragments.each((function(fragment) {
+      this.element.appendChild(fragment);
+    }).bind(this));
   }
 });
 
 Insertion.After = Class.create();
-Insertion.After.prototype = (new Abstract.Insertion('afterEnd')).extend({
+Insertion.After.prototype = Object.extend(new Abstract.Insertion('afterEnd'), {
   initializeRange: function() {
     this.range.setStartAfter(this.element);
   },
-  
-  insertContent: function() {
-    this.element.parentNode.insertBefore(this.fragment, 
-      this.element.nextSibling);
+
+  insertContent: function(fragments) {
+    fragments.each((function(fragment) {
+      this.element.parentNode.insertBefore(fragment,
+        this.element.nextSibling);
+    }).bind(this));
   }
 });
 
+/*--------------------------------------------------------------------------*/
+
+Element.ClassNames = Class.create();
+Element.ClassNames.prototype = {
+  initialize: function(element) {
+    this.element = $(element);
+  },
+
+  _each: function(iterator) {
+    this.element.className.split(/\s+/).select(function(name) {
+      return name.length > 0;
+    })._each(iterator);
+  },
+
+  set: function(className) {
+    this.element.className = className;
+  },
+
+  add: function(classNameToAdd) {
+    if (this.include(classNameToAdd)) return;
+    this.set(this.toArray().concat(classNameToAdd).join(' '));
+  },
+
+  remove: function(classNameToRemove) {
+    if (!this.include(classNameToRemove)) return;
+    this.set(this.select(function(className) {
+      return className != classNameToRemove;
+    }).join(' '));
+  },
+
+  toString: function() {
+    return this.toArray().join(' ');
+  }
+}
+
+Object.extend(Element.ClassNames.prototype, Enumerable);
+var Selector = Class.create();
+Selector.prototype = {
+  initialize: function(expression) {
+    this.params = {classNames: []};
+    this.expression = expression.toString().strip();
+    this.parseExpression();
+    this.compileMatcher();
+  },
+
+  parseExpression: function() {
+    function abort(message) { throw 'Parse error in selector: ' + message; }
+
+    if (this.expression == '')  abort('empty 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];
+    }
+
+    if (expr == '*') return this.params.wildcard = true;
+
+    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());
+      }
+      expr = rest;
+    }
+
+    if (expr.length > 0) abort(expr.inspect());
+  },
+
+  buildMatchExpression: function() {
+    var params = this.params, conditions = [], clause;
+
+    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() + ')';
+        }
+
+        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';
+        }
+      });
+    }
+
+    return conditions.join(' && ');
+  },
+
+  compileMatcher: function() {
+    this.match = new Function('element', 'if (!element.tagName) return false; \
+      return ' + this.buildMatchExpression());
+  },
+
+  findElements: function(scope) {
+    var element;
+
+    if (element = $(this.params.id))
+      if (this.match(element))
+        if (!scope || Element.childOf(element, scope))
+          return [element];
+
+    scope = (scope || document).getElementsByTagName(this.params.tagName || '*');
+
+    var results = [];
+    for (var i = 0; i < scope.length; i++)
+      if (this.match(element = scope[i]))
+        results.push(Element.extend(element));
+
+    return results;
+  },
+
+  toString: function() {
+    return this.expression;
+  }
+}
+
+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() {
@@ -560 +1384 @@
     $(element).focus();
   },
-  
+
   present: function() {
     for (var i = 0; i < arguments.length; i++)
@@ -566 +1390 @@
     return true;
   },
-  
+
   select: function(element) {
     $(element).select();
   },
-   
+
   activate: function(element) {
-    $(element).focus();
-    $(element).select();
+    element = $(element);
+    element.focus();
+    if (element.select)
+      element.select();
   }
 }
@@ -583 +1409 @@
     var elements = Form.getElements($(form));
     var queryComponents = new Array();
-    
+
     for (var i = 0; i < elements.length; i++) {
       var queryComponent = Form.Element.serialize(elements[i]);
@@ -589 +1415 @@
         queryComponents.push(queryComponent);
     }
-    
+
     return queryComponents.join('&');
   },
-  
+
   getElements: function(form) {
-    var form = $(form);
+    form = $(form);
     var elements = new Array();
 
-    for (tagName in Form.Element.Serializers) {
+    for (var tagName in Form.Element.Serializers) {
       var tagElements = form.getElementsByTagName(tagName);
       for (var j = 0; j < tagElements.length; j++)
@@ -604 +1430 @@
     return elements;
   },
-  
+
   getInputs: function(form, typeName, name) {
-    var form = $(form);
+    form = $(form);
     var inputs = form.getElementsByTagName('input');
-    
+
     if (!typeName && !name)
       return inputs;
-      
+
     var matchingInputs = new Array();
     for (var i = 0; i < inputs.length; i++) {
       var input = inputs[i];
       if ((typeName && input.type != typeName) ||
-          (name && input.name != name)) 
+          (name && input.name != name))
         continue;
       matchingInputs.push(input);
@@ -641 +1467 @@
   },
 
+  findFirstElement: function(form) {
+    return Form.getElements(form).find(function(element) {
+      return element.type != 'hidden' && !element.disabled &&
+        ['input', 'select', 'textarea'].include(element.tagName.toLowerCase());
+    });
+  },
+
   focusFirstElement: function(form) {
-    var form = $(form);
-    var elements = Form.getElements(form);
-    for (var i = 0; i < elements.length; i++) {
-      var element = elements[i];
-      if (element.type != 'hidden' && !element.disabled) {
-        Field.activate(element);
-        break;
-      }
-    }
+    Field.activate(Form.findFirstElement(form));
   },
 
@@ -660 +1485 @@
 Form.Element = {
   serialize: function(element) {
-    var element = $(element);
+    element = $(element);
     var method = element.tagName.toLowerCase();
     var parameter = Form.Element.Serializers[method](element);
-    
-    if (parameter)
-      return encodeURIComponent(parameter[0]) + '=' + 
-        encodeURIComponent(parameter[1]);                   
-  },
-  
+
+    if (parameter) {
+      var key = encodeURIComponent(parameter[0]);
+      if (key.length == 0) return;
+
+      if (parameter[1].constructor != Array)
+        parameter[1] = [parameter[1]];
+
+      return parameter[1].map(function(value) {
+        return key + '=' + encodeURIComponent(value);
+      }).join('&');
+    }
+  },
+
   getValue: function(element) {
-    var element = $(element);
+    element = $(element);
     var method = element.tagName.toLowerCase();
     var parameter = Form.Element.Serializers[method](element);
-    
-    if (parameter) 
+
+    if (parameter)
       return parameter[1];
   }
@@ -687 +1520 @@
       case 'text':
         return Form.Element.Serializers.textarea(element);
-      case 'checkbox':  
+      case 'checkbox':
       case 'radio':
         return Form.Element.Serializers.inputSelector(element);
@@ -704 +1537 @@
 
   select: function(element) {
-    var value = '';
-    if (element.type == 'select-one') {
-      var index = element.selectedIndex;
-      if (index >= 0)
-        value = element.options[index].value || element.options[index].text;
-    } else {
-      value = new Array();
-      for (var i = 0; i < element.length; i++) {
-        var opt = element.options[i];
-        if (opt.selected)
-          value.push(opt.value || opt.text);
-      }
+    return Form.Element.Serializers[element.type == 'select-one' ?
+      'selectOne' : 'selectMany'](element);
+  },
+
+  selectOne: function(element) {
+    var value = '', opt, index = element.selectedIndex;
+    if (index >= 0) {
+      opt = element.options[index];
+      value = opt.value || opt.text;
+    }
+    return [element.name, value];
+  },
+
+  selectMany: function(element) {
+    var value = [];
+    for (var i = 0; i < element.length; i++) {
+      var opt = element.options[i];
+      if (opt.selected)
+        value.push(opt.value || opt.text);
     }
     return [element.name, value];
@@ -733 +1573 @@
     this.element   = $(element);
     this.callback  = callback;
-    
+
     this.lastValue = this.getValue();
     this.registerCallback();
   },
-  
+
   registerCallback: function() {
     setInterval(this.onTimerEvent.bind(this), this.frequency * 1000);
   },
-  
+
   onTimerEvent: function() {
     var value = this.getValue();
@@ -752 +1592 @@
 
 Form.Element.Observer = Class.create();
-Form.Element.Observer.prototype = (new Abstract.TimedObserver()).extend({
+Form.Element.Observer.prototype = Object.extend(new Abstract.TimedObserver(), {
   getValue: function() {
     return Form.Element.getValue(this.element);
@@ -759 +1599 @@
 
 Form.Observer = Class.create();
-Form.Observer.prototype = (new Abstract.TimedObserver()).extend({
+Form.Observer.prototype = Object.extend(new Abstract.TimedObserver(), {
   getValue: function() {
     return Form.serialize(this.element);
@@ -772 +1612 @@
     this.element  = $(element);
     this.callback = callback;
-    
+
     this.lastValue = this.getValue();
     if (this.element.tagName.toLowerCase() == 'form')
@@ -779 +1619 @@
       this.registerCallback(this.element);
   },
-  
+
   onElementEvent: function() {
     var value = this.getValue();
@@ -787 +1627 @@
     }
   },
-  
+
   registerFormCallbacks: function() {
     var elements = Form.getElements(this.element);
@@ -793 +1633 @@
       this.registerCallback(elements[i]);
   },
-  
+
   registerCallback: function(element) {
     if (element.type) {
       switch (element.type.toLowerCase()) {
-        case 'checkbox':  
+        case 'checkbox':
         case 'radio':
-          element.target = this;
-          element.prev_onclick = element.onclick || Prototype.emptyFunction;
-          element.onclick = function() {
-            this.prev_onclick(); 
-            this.target.onElementEvent();
-          }
+          Event.observe(element, 'click', this.onElementEvent.bind(this));
           break;
         case 'password':
@@ -811 +1646 @@
         case 'select-one':
         case 'select-multiple':
-          element.target = this;
-          element.prev_onchange = element.onchange || Prototype.emptyFunction;
-          element.onchange = function() {
-            this.prev_onchange(); 
-            this.target.onElementEvent();
-          }
+          Event.observe(element, 'change', this.onElementEvent.bind(this));
           break;
       }
-    }    
+    }
   }
 }
 
 Form.Element.EventObserver = Class.create();
-Form.Element.EventObserver.prototype = (new Abstract.EventObserver()).extend({
+Form.Element.EventObserver.prototype = Object.extend(new Abstract.EventObserver(), {
   getValue: function() {
     return Form.Element.getValue(this.element);
@@ -831 +1661 @@
 
 Form.EventObserver = Class.create();
-Form.EventObserver.prototype = (new Abstract.EventObserver()).extend({
+Form.EventObserver.prototype = Object.extend(new Abstract.EventObserver(), {
   getValue: function() {
     return Form.serialize(this.element);
   }
 });
-
-
 if (!window.Event) {
   var Event = new Object();
@@ -863 +1691 @@
 
   pointerX: function(event) {
-    return event.pageX || (event.clientX + 
+    return event.pageX || (event.clientX +
       (document.documentElement.scrollLeft || document.body.scrollLeft));
   },
 
   pointerY: function(event) {
-    return event.pageY || (event.clientY + 
+    return event.pageY || (event.clientY +
       (document.documentElement.scrollTop || document.body.scrollTop));
   },
 
   stop: function(event) {
-    if (event.preventDefault) { 
-      event.preventDefault(); 
-      event.stopPropagation(); 
+    if (event.preventDefault) {
+      event.preventDefault();
+      event.stopPropagation();
     } else {
       event.returnValue = false;
+      event.cancelBubble = true;
     }
   },
@@ -891 +1720 @@
   },
 
+  observers: false,
+
+  _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);
+    }
+  },
+
+  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;
+    }
+    Event.observers = false;
+  },
+
   observe: function(element, name, observer, useCapture) {
     var element = $(element);
     useCapture = useCapture || false;
-    
-    if (name == 'keypress') {
-      if (navigator.appVersion.indexOf('AppleWebKit') > 0) {
-        element.addEventListener('keydown', observer, useCapture);
-        return;
-      }
-      if (element.addEventListener) {
-        element.addEventListener('keypress', observer, useCapture);
-      } else if (element.attachEvent) {
-        element.attachEvent('onkeydown', observer);
-      }
-    } else {
-      if (element.addEventListener) {
-        element.addEventListener(name, observer, useCapture);
-      } else if (element.attachEvent) {
-        element.attachEvent('on' + name, observer);
-      }
-    }
+
+    if (name == 'keypress' &&
+        (navigator.appVersion.match(/Konqueror|Safari|KHTML/)
+        || element.attachEvent))
+      name = 'keydown';
+
+    this._observeAndCache(element, name, observer, useCapture);
   },
 
@@ -917 +1757 @@
     var element = $(element);
     useCapture = useCapture || false;
-    
-    if (name == 'keypress') {
-      if (navigator.appVersion.indexOf('AppleWebKit') > 0) {
-        element.removeEventListener('keydown', observer, useCapture);
-        return;
-      }
-      if (element.removeEventListener) {
-        element.removeEventListener('keypress', observer, useCapture);
-      } else if (element.detachEvent) {
-        element.detachEvent('onkeydown', observer);
-      }
-    } else {
-      if (element.removeEventListener) {
-        element.removeEventListener(name, observer, useCapture);
-      } else if (element.detachEvent) {
-        element.detachEvent('on' + name, observer);
-      }
+
+    if (name == 'keypress' &&
+        (navigator.appVersion.match(/Konqueror|Safari|KHTML/)
+        || element.detachEvent))
+      name = 'keydown';
+
+    if (element.removeEventListener) {
+      element.removeEventListener(name, observer, useCapture);
+    } else if (element.detachEvent) {
+      element.detachEvent('on' + name, observer);
     }
   }
 });
 
+/* prevent memory leaks in IE */
+if (navigator.appVersion.match(/\bMSIE\b/))
+  Event.observe(window, 'unload', Event.unloadCache, false);
 var Position = {
-
   // set to true if needed, warning: firefox performance problems
   // NOT neeeded for page scrolling, only if draggable contained in
   // scrollable elements
-  includeScrollOffsets: false, 
+  includeScrollOffsets: false,
 
   // must be called before calling withinIncludingScrolloffset, every time the
   // page is scrolled
   prepare: function() {
-    this.deltaX =  window.pageXOffset 
-                || document.documentElement.scrollLeft 
-                || document.body.scrollLeft 
+    this.deltaX =  window.pageXOffset
+                || document.documentElement.scrollLeft
+                || document.body.scrollLeft
                 || 0;
-    this.deltaY =  window.pageYOffset 
-                || document.documentElement.scrollTop 
-                || document.body.scrollTop 
+    this.deltaY =  window.pageYOffset
+                || document.documentElement.scrollTop
+                || document.body.scrollTop
                 || 0;
   },
@@ -962 +1797 @@
     do {
       valueT += element.scrollTop  || 0;
-      valueL += element.scrollLeft || 0; 
+      valueL += element.scrollLeft || 0;
       element = element.parentNode;
     } while (element);
@@ -978 +1813 @@
   },
 
+  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) {
@@ -988 +1848 @@
     return (y >= this.offset[1] &&
             y <  this.offset[1] + element.offsetHeight &&
-            x >= this.offset[0] && 
+            x >= this.offset[0] &&
             x <  this.offset[0] + element.offsetWidth);
   },
@@ -1001 +1861 @@
     return (this.ycomp >= this.offset[1] &&
             this.ycomp <  this.offset[1] + element.offsetHeight &&
-            this.xcomp >= this.offset[0] && 
+            this.xcomp >= this.offset[0] &&
             this.xcomp <  this.offset[0] + element.offsetWidth);
   },
 
   // within must be called directly before
-  overlap: function(mode, element) {  
-    if (!mode) return 0;  
-    if (mode == 'vertical') 
-      return ((this.offset[1] + element.offsetHeight) - this.ycomp) / 
+  overlap: function(mode, element) {
+    if (!mode) return 0;
+    if (mode == 'vertical')
+      return ((this.offset[1] + element.offsetHeight) - this.ycomp) /
         element.offsetHeight;
     if (mode == 'horizontal')
-      return ((this.offset[0] + element.offsetWidth) - this.xcomp) / 
+      return ((this.offset[0] + element.offsetWidth) - this.xcomp) /
         element.offsetWidth;
   },
@@ -1025 +1885 @@
     target.style.width  = source.offsetWidth + 'px';
     target.style.height = source.offsetHeight + 'px';
-  }
-}
+  },
+
+  page: 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)
+        if (Element.getStyle(element,'position')=='absolute') break;
+
+    } while (element = element.offsetParent);
+
+    element = forElement;
+    do {
+      valueT -= element.scrollTop  || 0;
+      valueL -= element.scrollLeft || 0;
+    } while (element = element.parentNode);
+
+    return [valueL, valueT];
+  },
+
+  clone: function(source, target) {
+    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 = Position.page(source);
+
+    // 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;
+    }
+
+    // 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';
+  },
+
+  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._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';;
+  },
+
+  relativize: function(element) {
+    element = $(element);
+    if (element.style.position == 'relative') return;
+    Position.prepare();
+
+    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;
+  }
+}
+
+// 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;
+
+      element = element.offsetParent;
+    } while (element);
+
+    return [valueL, valueT];
+  }
+}