Author: jmorliaguet
Date: Mon Dec 19 17:47:56 2005
New Revision: 2052

Modified:
   cpsskins/branches/jmo-perspectives/ui/framework/prototype.js
Log:

- updated to prototype.js 1.4.0



Modified: cpsskins/branches/jmo-perspectives/ui/framework/prototype.js
==============================================================================
--- cpsskins/branches/jmo-perspectives/ui/framework/prototype.js        
(original)
+++ cpsskins/branches/jmo-perspectives/ui/framework/prototype.js        Mon Dec 
19 17:47:56 2005
@@ -1,8 +1,8 @@
-/*  Prototype JavaScript framework, version 1.3.1
+/*  Prototype JavaScript framework, version 1.4.0
  *  (c) 2005 Sam Stephenson <[EMAIL PROTECTED]>
  *
  *  THIS FILE IS AUTOMATICALLY GENERATED. When sending patches, please diff
- *  against the source tree, available from the Prototype darcs repository. 
+ *  against the source tree, available from the Prototype darcs repository.
  *
  *  Prototype is freely distributable under the terms of an MIT-style license.
  *
@@ -11,13 +11,16 @@
 /*--------------------------------------------------------------------------*/
 
 var Prototype = {
-  Version: '1.3.1',
-  emptyFunction: function() {}
+  Version: '1.4.0',
+  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);
     }
   }
@@ -32,29 +35,47 @@
   return destination;
 }
 
-Object.prototype.extend = function(object) {
-  return Object.extend.apply(this, [this, object]);
+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(object) {
-  var __method = this;
+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)));
   }
 }
 
 Function.prototype.bindAsEventListener = function(object) {
   var __method = this;
   return function(event) {
-    __method.call(object, event || window.event);
+    return __method.call(object, event || window.event);
   }
 }
 
-Number.prototype.toColorPart = function() {
-  var digits = this.toString(16);
-  if (this < 16) return '0' + digits;
-  return digits;
-}
+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 = {
   these: function() {
@@ -90,10 +111,10 @@
 
   onTimerEvent: function() {
     if (!this.currentlyExecuting) {
-      try { 
+      try {
         this.currentlyExecuting = true;
-        this.callback(); 
-      } finally { 
+        this.callback();
+      } finally {
         this.currentlyExecuting = false;
       }
     }
@@ -110,7 +131,7 @@
     if (typeof element == 'string')
       element = document.getElementById(element);
 
-    if (arguments.length == 1) 
+    if (arguments.length == 1)
       return element;
 
     elements.push(element);
@@ -118,38 +139,25 @@
 
   return elements;
 }
+Object.extend(String.prototype, {
+  stripTags: function() {
+    return this.replace(/<\/?[^>]+>/gi, '');
+  },
 
-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;
-  }
-}
+  stripScripts: function() {
+    return this.replace(new RegExp(Prototype.ScriptFragment, 'img'), '');
+  },
 
-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.join(', ') + ')');
-    object.__apply__ = null;
-    
-    return result;
-  }
-}
+  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];
+    });
+  },
 
-String.prototype.extend({
-  stripTags: function() {
-    return this.replace(/<\/?[^>]+>/gi, '');
+  evalScripts: function() {
+    return this.extractScripts().map(eval);
   },
 
   escapeHTML: function() {
@@ -162,9 +170,381 @@
   unescapeHTML: function() {
     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('\\', '\\\\').replace("'", '\\\'') + "'";
+  }
+});
+
+String.prototype.parseQuery = String.prototype.toQueryParams;
+
+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 (value >= (result || value))
+        result = value;
+    });
+    return result;
+  },
+
+  min: function(iterator) {
+    var result;
+    this.each(function(value, index) {
+      value = (iterator || Prototype.K)(value, index);
+      if (value <= (result || value))
+        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) {
+      iterator(value = collections.pluck(index));
+      return value;
+    });
+  },
+
+  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);
+
+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.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();
+  },
+
+  shift: function() {
+    var result = this[0];
+    for (var i = 0; i < this.length - 1; i++)
+      this[i] = this[i + 1];
+    this.length--;
+    return result;
+  },
+
+  inspect: function() {
+    return '[' + this.map(Object.inspect).join(', ') + ']';
   }
 });
+var Hash = {
+  _each: function(iterator) {
+    for (key in this) {
+      var value = this[key];
+      if (typeof value == 'function') continue;
+
+      var pair = [key, value];
+      pair.key = key;
+      pair.value = value;
+      iterator(pair);
+    }
+  },
+
+  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() {
@@ -173,9 +553,50 @@
       function() {return new ActiveXObject('Microsoft.XMLHTTP')},
       function() {return new XMLHttpRequest()}
     ) || 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() {};
 Ajax.Base.prototype = {
   setOptions: function(options) {
@@ -183,12 +604,13 @@
       method:       'post',
       asynchronous: true,
       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);
   },
 
@@ -198,10 +620,10 @@
 }
 
 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();
     this.setOptions(options);
@@ -213,10 +635,13 @@
     if (parameters.length > 0) parameters += '&_=';
 
     try {
-      if (this.options.method == 'get')
-        url += '?' + parameters;
+      this.url = url;
+      if (this.options.method == 'get' && parameters.length > 0)
+        this.url += (this.url.match(/\?/) ? '&' : '?') + parameters;
 
-      this.transport.open(this.options.method, url,
+      Ajax.Responders.dispatch('onCreate', this, this.transport);
+
+      this.transport.open(this.options.method, this.url,
         this.options.asynchronous);
 
       if (this.options.asynchronous) {
@@ -230,21 +655,22 @@
       this.transport.send(this.options.method == 'post' ? body : null);
 
     } catch (e) {
+      this.dispatchException(e);
     }
   },
 
   setRequestHeaders: function() {
-    var requestHeaders = 
+    var requestHeaders =
       ['X-Requested-With', 'XMLHttpRequest',
        'X-Prototype-Version', Prototype.Version];
 
     if (this.options.method == 'post') {
-      requestHeaders.push('Content-type', 
+      requestHeaders.push('Content-type',
         'application/x-www-form-urlencoded');
 
       /* Force "Connection: close" for Mozilla browsers to work around
        * a bug where XMLHttpReqeuest sends an incorrect Content-length
-       * header. See Mozilla Bugzilla #246651. 
+       * header. See Mozilla Bugzilla #246651.
        */
       if (this.transport.overrideMimeType)
         requestHeaders.push('Connection', 'close');
@@ -263,26 +689,64 @@
       this.respondToReadyState(this.transport.readyState);
   },
 
+  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];
+    var transport = this.transport, json = this.evalJSON();
 
-    if (event == 'Complete')
-      (this.options['on' + this.transport.status]
-       || this.options['on' + (this.responseIsSuccess() ? 'Success' : 
'Failure')]
-       || Prototype.emptyFunction)(this.transport);
+    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);
+      }
 
-    (this.options['on' + event] || Prototype.emptyFunction)(this.transport);
+      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 = {
       success: container.success ? $(container.success) : $(container),
@@ -294,9 +758,9 @@
     this.setOptions(options);
 
     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);
 
     this.request(url);
@@ -305,43 +769,34 @@
   updateContent: function() {
     var receiver = this.responseIsSuccess() ?
       this.containers.success : this.containers.failure;
+    var response = this.transport.responseText;
 
-    var match    = new RegExp(Ajax.Updater.ScriptFragment, 'img');
-    var response = this.transport.responseText.replace(match, '');
-    var scripts  = this.transport.responseText.match(match);
+    if (!this.options.evalScripts)
+      response = response.stripScripts();
 
     if (receiver) {
       if (this.options.insertion) {
         new this.options.insertion(receiver, response);
       } else {
-        receiver.innerHTML = response;
+        Element.update(receiver, response);
       }
     }
 
     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);
     }
   }
 });
 
 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);
     this.onComplete = this.options.onComplete;
 
     this.frequency = (this.options.frequency || 2);
-    this.decay = 1;
+    this.decay = (this.options.decay || 1);
 
     this.updater = {};
     this.container = container;
@@ -358,17 +813,17 @@
   stop: function() {
     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);
   },
 
@@ -376,23 +831,13 @@
     this.updater = new Ajax.Updater(this.container, this.url, this.options);
   }
 });
-
-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;
+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(child);
+    return elements;
+  });
 }
 
 /*--------------------------------------------------------------------------*/
@@ -402,11 +847,14 @@
 }
 
 Object.extend(Element, {
+  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);
     }
   },
 
@@ -428,54 +876,142 @@
     element = $(element);
     element.parentNode.removeChild(element);
   },
-   
+
+  update: function(element, html) {
+    $(element).innerHTML = html.stripScripts();
+    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 $(element).innerHTML.match(/^\s*$/);
+  },
+
+  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 (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;
   }
 });
 
@@ -491,68 +1027,127 @@
 Abstract.Insertion.prototype = {
   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) {
+        if (this.element.tagName.toLowerCase() == 'tbody') {
+          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);
   }
 }
 
 var Insertion = new Object();
 
 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 Field = {
   clear: function() {
     for (var i = 0; i < arguments.length; i++)
@@ -562,20 +1157,22 @@
   focus: function(element) {
     $(element).focus();
   },
-  
+
   present: function() {
     for (var i = 0; i < arguments.length; i++)
       if ($(arguments[i]).value == '') return false;
     return true;
   },
-  
+
   select: function(element) {
     $(element).select();
   },
-   
+
   activate: function(element) {
-    $(element).focus();
-    $(element).select();
+    element = $(element);
+    element.focus();
+    if (element.select)
+      element.select();
   }
 }
 
@@ -585,18 +1182,18 @@
   serialize: function(form) {
     var elements = Form.getElements($(form));
     var queryComponents = new Array();
-    
+
     for (var i = 0; i < elements.length; i++) {
       var queryComponent = Form.Element.serialize(elements[i]);
       if (queryComponent)
         queryComponents.push(queryComponent);
     }
-    
+
     return queryComponents.join('&');
   },
-  
+
   getElements: function(form) {
-    var form = $(form);
+    form = $(form);
     var elements = new Array();
 
     for (tagName in Form.Element.Serializers) {
@@ -606,19 +1203,19 @@
     }
     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);
     }
@@ -643,16 +1240,15 @@
     }
   },
 
+  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));
   },
 
   reset: function(form) {
@@ -662,21 +1258,29 @@
 
 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];
   }
 }
@@ -689,7 +1293,7 @@
       case 'password':
       case 'text':
         return Form.Element.Serializers.textarea(element);
-      case 'checkbox':  
+      case 'checkbox':
       case 'radio':
         return Form.Element.Serializers.inputSelector(element);
     }
@@ -706,17 +1310,30 @@
   },
 
   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;
+      if (!value && !('value' in opt))
+        value = opt.text;
+    }
+    return [element.name, value];
+  },
+
+  selectMany: function(element) {
+    var value = new Array();
+    for (var i = 0; i < element.length; i++) {
+      var opt = element.options[i];
+      if (opt.selected) {
+        var optValue = opt.value;
+        if (!optValue && !('value' in opt))
+          optValue = opt.text;
+        value.push(optValue);
       }
     }
     return [element.name, value];
@@ -735,15 +1352,15 @@
     this.frequency = frequency;
     this.element   = $(element);
     this.callback  = callback;
-    
+
     this.lastValue = this.getValue();
     this.registerCallback();
   },
-  
+
   registerCallback: function() {
     setInterval(this.onTimerEvent.bind(this), this.frequency * 1000);
   },
-  
+
   onTimerEvent: function() {
     var value = this.getValue();
     if (this.lastValue != value) {
@@ -754,14 +1371,14 @@
 }
 
 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);
   }
 });
 
 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);
   }
@@ -774,14 +1391,14 @@
   initialize: function(element, callback) {
     this.element  = $(element);
     this.callback = callback;
-    
+
     this.lastValue = this.getValue();
     if (this.element.tagName.toLowerCase() == 'form')
       this.registerFormCallbacks();
     else
       this.registerCallback(this.element);
   },
-  
+
   onElementEvent: function() {
     var value = this.getValue();
     if (this.lastValue != value) {
@@ -789,57 +1406,45 @@
       this.lastValue = value;
     }
   },
-  
+
   registerFormCallbacks: function() {
     var elements = Form.getElements(this.element);
     for (var i = 0; i < elements.length; i++)
       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':
         case 'text':
         case 'textarea':
         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);
   }
 });
 
 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();
 }
@@ -865,21 +1470,22 @@
   },
 
   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;
     }
   },
 
@@ -894,7 +1500,7 @@
   },
 
   observers: false,
-  
+
   _observeAndCache: function(element, name, observer, useCapture) {
     if (!this.observers) this.observers = [];
     if (element.addEventListener) {
@@ -905,7 +1511,7 @@
       element.attachEvent('on' + name, observer);
     }
   },
-  
+
   unloadCache: function() {
     if (!Event.observers) return;
     for (var i = 0; i < Event.observers.length; i++) {
@@ -918,24 +1524,24 @@
   observe: function(element, name, observer, useCapture) {
     var element = $(element);
     useCapture = useCapture || false;
-    
+
     if (name == 'keypress' &&
-        ((navigator.appVersion.indexOf('AppleWebKit') > 0) 
+        (navigator.appVersion.match(/Konqueror|Safari|KHTML/)
         || element.attachEvent))
       name = 'keydown';
-    
+
     this._observeAndCache(element, name, observer, useCapture);
   },
 
   stopObserving: function(element, name, observer, useCapture) {
     var element = $(element);
     useCapture = useCapture || false;
-    
+
     if (name == 'keypress' &&
-        ((navigator.appVersion.indexOf('AppleWebKit') > 0) 
+        (navigator.appVersion.match(/Konqueror|Safari|KHTML/)
         || element.detachEvent))
       name = 'keydown';
-    
+
     if (element.removeEventListener) {
       element.removeEventListener(name, observer, useCapture);
     } else if (element.detachEvent) {
@@ -946,24 +1552,22 @@
 
 /* prevent memory leaks in IE */
 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;
   },
 
@@ -971,7 +1575,7 @@
     var valueT = 0, valueL = 0;
     do {
       valueT += element.scrollTop  || 0;
-      valueL += element.scrollLeft || 0; 
+      valueL += element.scrollLeft || 0;
       element = element.parentNode;
     } while (element);
     return [valueL, valueT];
@@ -987,6 +1591,31 @@
     return [valueL, valueT];
   },
 
+  positionedOffset: function(element) {
+    var valueT = 0, valueL = 0;
+    do {
+      valueT += element.offsetTop  || 0;
+      valueL += element.offsetLeft || 0;
+      element = element.offsetParent;
+      if (element) {
+        p = Element.getStyle(element, 'position');
+        if (p == 'relative' || p == 'absolute') break;
+      }
+    } while (element);
+    return [valueL, valueT];
+  },
+
+  offsetParent: function(element) {
+    if (element.offsetParent) return element.offsetParent;
+    if (element == document.body) return element;
+
+    while ((element = element.parentNode) && element != document.body)
+      if (Element.getStyle(element, 'position') != 'static')
+        return element;
+
+    return document.body;
+  },
+
   // caches x/y coordinate pair to use with overlap
   within: function(element, x, y) {
     if (this.includeScrollOffsets)
@@ -997,7 +1626,7 @@
 
     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);
   },
 
@@ -1010,18 +1639,18 @@
 
     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;
   },
 
@@ -1034,5 +1663,123 @@
     target.style.left   = offsets[0] + 'px';
     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];
+  }
+}
\ No newline at end of file
-- 
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