text: // script.aculo.us effects.js v1.8.3, Thu Oct 08 11:23:33 +0200 2009
  
  // Copyright (c) 2005-2009 Thomas Fuchs (http://script.aculo.us, http://mir.aculo.us)
  // Contributors:
  //  Justin Palmer (http://encytemedia.com/)
  //  Mark Pilgrim (http://diveintomark.org/)
  //  Martin Bialasinki
  //
  // script.aculo.us is freely distributable under the terms of an MIT-style license.
  // For details, see the script.aculo.us web site: http://script.aculo.us/
  
  // converts rgb() and #xxx to #xxxxxx format,
  // returns self (or first argument) if not convertable
  String.prototype.parseColor = function() {
      var color = '#';
      if (this.slice(0, 4) == 'rgb(') {
          var 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({fontSize: (percent / 100) + 'em'});
      if (Prototype.Browser.WebKit) window.scrollBy(0, 0);
      return element;
  };
  
  Element.getInlineOpacity = function(element) {
      return $(element).style.opacity || '';
  };
  
  Element.forceRerendering = function(element) {
      try {
          element = $(element);
          var n = document.createTextNode(' ');
          element.appendChild(n);
          element.removeChild(n);
      } catch(e) {
      }
  };
  
  /*--------------------------------------------------------------------------*/
  
  var Effect = {
      _elementDoesNotExistError: {
          name: 'ElementDoesNotExistError',
          message: 'The specified DOM element does not exist, but is required for this effect to operate'
      },
      Transitions: {
          linear: Prototype.K,
          sinoidal: function(pos) {
              return (-Math.cos(pos * Math.PI) / 2) + .5;
          },
          reverse: function(pos) {
              return 1 - pos;
          },
          flicker: function(pos) {
              var pos = ((-Math.cos(pos * Math.PI) / 4) + .75) + Math.random() / 4;
              return pos > 1 ? 1 : pos;
          },
          wobble: function(pos) {
              return (-Math.cos(pos * Math.PI * (9 * pos)) / 2) + .5;
          },
          pulse: function(pos, pulses) {
              return (-Math.cos((pos * ((pulses || 5) - .5) * 2) * Math.PI) / 2) + .5;
          },
          spring: function(pos) {
              return 1 - (Math.cos(pos * 4.5 * Math.PI) * Math.exp(-pos * 6));
          },
          none: function(pos) {
              return 0;
          },
          full: function(pos) {
              return 1;
          }
      },
      DefaultOptions: {
          duration:   1.0,   // seconds
          fps:        100,   // 100= assume 66fps max.
          sync:       false, // true for combining
          from:       0.0,
          to:         1.0,
          delay:      0.0,
          queue:      'parallel'
      },
      tagifyText: function(element) {
          var tagifyStyle = 'position:relative';
          if (Prototype.Browser.IE) tagifyStyle += ';zoom:1';
  
          element = $(element);
          $A(element.childNodes).each(function(child) {
              if (child.nodeType == 3) {
                  child.nodeValue.toArray().each(function(character) {
                      element.insertBefore(
                              new Element('span', {style: tagifyStyle}).update(
                                      character == ' ' ? String.fromCharCode(160) : character),
                              child);
                  });
                  Element.remove(child);
              }
          });
      },
      multiple: function(element, effect) {
          var elements;
          if (((typeof element == 'object') ||
                  Object.isFunction(element)) &&
                  (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, options) {
          element = $(element);
          effect = (effect || 'appear').toLowerCase();
  
          return Effect[ Effect.PAIRS[ effect ][ element.visible() ? 1 : 0 ] ](element, Object.extend({
              queue: { position:'end', scope:(element.id || 'global'), limit: 1 }
          }, options || {}));
      }
  };
  
  Effect.DefaultOptions.transition = Effect.Transitions.sinoidal;
  
  /* ------------- core effects ------------- */
  
  Effect.ScopedQueue = Class.create(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 = Object.isString(effect.options.queue) ?
                  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 'with-last':
                  timestamp = this.effects.pluck('startOn').max() || timestamp;
                  break;
              case 'end':
                  // start effect after last queued effect has finished
                  timestamp = this.effects.pluck('finishOn').max() || timestamp;
                  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), 15);
      },
      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();
          for (var i = 0, len = this.effects.length; i < len; i++)
              this.effects[i] && this.effects[i].loop(timePos);
      }
  });
  
  Effect.Queues = {
      instances: $H(),
      get: function(queueName) {
          if (!Object.isString(queueName)) return queueName;
  
          return this.instances.get(queueName) ||
                  this.instances.set(queueName, new Effect.ScopedQueue());
      }
  };
  Effect.Queue = Effect.Queues.get('global');
  
  Effect.Base = Class.create({
      position: null,
      start: function(options) {
          if (options && options.transition === false) options.transition = Effect.Transitions.linear;
          this.options = Object.extend(Object.extend({ }, Effect.DefaultOptions), options || { });
          this.currentFrame = 0;
          this.state = 'idle';
          this.startOn = this.options.delay * 1000;
          this.finishOn = this.startOn + (this.options.duration * 1000);
          this.fromToDelta = this.options.to - this.options.from;
          this.totalTime = this.finishOn - this.startOn;
          this.totalFrames = this.options.fps * this.options.duration;
  
          this.render = (function() {
              function dispatch(effect, eventName) {
                  if (effect.options[eventName + 'Internal'])
                      effect.options[eventName + 'Internal'](effect);
                  if (effect.options[eventName])
                      effect.options[eventName](effect);
              }
  
              return function(pos) {
                  if (this.state === "idle") {
                      this.state = "running";
                      dispatch(this, 'beforeSetup');
                      if (this.setup) this.setup();
                      dispatch(this, 'afterSetup');
                  }
                  if (this.state === "running") {
                      pos = (this.options.transition(pos) * this.fromToDelta) + this.options.from;
                      this.position = pos;
                      dispatch(this, 'beforeUpdate');
                      if (this.update) this.update(pos);
                      dispatch(this, 'afterUpdate');
                  }
              };
          })();
  
          this.event('beforeStart');
          if (!this.options.sync)
              Effect.Queues.get(Object.isString(this.options.queue) ?
                      'global' : this.options.queue.scope).add(this);
      },
      loop: function(timePos) {
          if (timePos >= this.startOn) {
              if (timePos >= this.finishOn) {
                  this.render(1.0);
                  this.cancel();
                  this.event('beforeFinish');
                  if (this.finish) this.finish();
                  this.event('afterFinish');
                  return;
              }
              var pos = (timePos - this.startOn) / this.totalTime,
                      frame = (pos * this.totalFrames).round();
              if (frame > this.currentFrame) {
                  this.render(pos);
                  this.currentFrame = frame;
              }
          }
      },
      cancel: function() {
          if (!this.options.sync)
              Effect.Queues.get(Object.isString(this.options.queue) ?
                      'global' : this.options.queue.scope).remove(this);
          this.state = 'finished';
      },
      event: function(eventName) {
          if (this.options[eventName + 'Internal']) this.options[eventName + 'Internal'](this);
          if (this.options[eventName]) this.options[eventName](this);
      },
      inspect: function() {
          var data = $H();
          for (property in this)
              if (!Object.isFunction(this[property])) data.set(property, this[property]);
          return '#<Effect:' + data.inspect() + ',options:' + $H(this.options).inspect() + '>';
      }
  });
  
  Effect.Parallel = Class.create(Effect.Base, {
      initialize: function(effects) {
          this.effects = effects || [];
          this.start(arguments[1]);
      },
      update: function(position) {
          this.effects.invoke('render', position);
      },
      finish: function(position) {
          this.effects.each(function(effect) {
              effect.render(1.0);
              effect.cancel();
              effect.event('beforeFinish');
              if (effect.finish) effect.finish(position);
              effect.event('afterFinish');
          });
      }
  });
  
  Effect.Tween = Class.create(Effect.Base, {
      initialize: function(object, from, to) {
          object = Object.isString(object) ? $(object) : object;
          var args = $A(arguments), method = args.last(),
                  options = args.length == 5 ? args[3] : null;
          this.method = Object.isFunction(method) ? method.bind(object) :
                  Object.isFunction(object[method]) ? object[method].bind(object) :
                  function(value) {
                      object[method] = value
                  };
          this.start(Object.extend({ from: from, to: to }, options || { }));
      },
      update: function(position) {
          this.method(position);
      }
  });
  
  Effect.Event = Class.create(Effect.Base, {
      initialize: function() {
          this.start(Object.extend({ duration: 0 }, arguments[0] || { }));
      },
      update: Prototype.emptyFunction
  });
  
  Effect.Opacity = Class.create(Effect.Base, {
      initialize: function(element) {
          this.element = $(element);
          if (!this.element) throw(Effect._elementDoesNotExistError);
          // make this work on IE on elements without 'layout'
          if (Prototype.Browser.IE && (!this.element.currentStyle.hasLayout))
              this.element.setStyle({zoom: 1});
          var options = Object.extend({
              from: this.element.getOpacity() || 0.0,
              to:   1.0
          }, arguments[1] || { });
          this.start(options);
      },
      update: function(position) {
          this.element.setOpacity(position);
      }
  });
  
  Effect.Move = Class.create(Effect.Base, {
      initialize: function(element) {
          this.element = $(element);
          if (!this.element) throw(Effect._elementDoesNotExistError);
          var options = Object.extend({
              x:    0,
              y:    0,
              mode: 'relative'
          }, arguments[1] || { });
          this.start(options);
      },
      setup: function() {
          this.element.makePositioned();
          this.originalLeft = parseFloat(this.element.getStyle('left') || '0');
          this.originalTop = parseFloat(this.element.getStyle('top') || '0');
          if (this.options.mode == 'absolute') {
              this.options.x = this.options.x - this.originalLeft;
              this.options.y = this.options.y - this.originalTop;
          }
      },
      update: function(position) {
          this.element.setStyle({
              left: (this.options.x * position + this.originalLeft).round() + 'px',
              top:  (this.options.y * position + this.originalTop).round() + '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(Effect.Base, {
      initialize: function(element, percent) {
          this.element = $(element);
          if (!this.element) throw(Effect._elementDoesNotExistError);
          var options = Object.extend({
              scaleX: true,
              scaleY: true,
              scaleContent: true,
              scaleFromCenter: false,
              scaleMode: 'box',        // 'box' or 'contents' or { } with provided values
              scaleFrom: 100.0,
              scaleTo:   percent
          }, arguments[2] || { });
          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','%','pt'].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) {
          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.round() + 'px';
          if (this.options.scaleY) d.height = height.round() + 'px';
          if (this.options.scaleFromCenter) {
              var topd = (height - this.dims[0]) / 2;
              var leftd = (width - this.dims[1]) / 2;
              if (this.elementPositioning == 'absolute') {
                  if (this.options.scaleY) d.top = this.originalTop - topd + 'px';
                  if (this.options.scaleX) d.left = this.originalLeft - leftd + 'px';
              } else {
                  if (this.options.scaleY) d.top = -topd + 'px';
                  if (this.options.scaleX) d.left = -leftd + 'px';
              }
          }
          this.element.setStyle(d);
      }
  });
  
  Effect.Highlight = Class.create(Effect.Base, {
      initialize: function(element) {
          this.element = $(element);
          if (!this.element) throw(Effect._elementDoesNotExistError);
          var options = Object.extend({ startcolor: '#ffff99' }, arguments[1] || { });
          this.start(options);
      },
      setup: function() {
          // Prevent executing on elements not in the layout flow
          if (this.element.getStyle('display') == 'none') {
              this.cancel();
              return;
          }
          // Disable background image during the effect
          this.oldStyle = { };
          if (!this.options.keepBackgroundImage) {
              this.oldStyle.backgroundImage = this.element.getStyle('background-image');
              this.element.setStyle({backgroundImage: 'none'});
          }
          if (!this.options.endcolor)
              this.options.endcolor = this.element.getStyle('background-color').parseColor('#ffffff');
          if (!this.options.restorecolor)
              this.options.restorecolor = this.element.getStyle('background-color');
          // init color calculations
          this._base = $R(0, 2).map(function(i) {
              return parseInt(this.options.startcolor.slice(i * 2 + 1, i * 2 + 3), 16)
          }.bind(this));
          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) {
          this.element.setStyle({backgroundColor: $R(0, 2).inject('#', function(m, v, i) {
              return m + ((this._base[i] + (this._delta[i] * position)).round().toColorPart());
          }.bind(this)) });
      },
      finish: function() {
          this.element.setStyle(Object.extend(this.oldStyle, {
              backgroundColor: this.options.restorecolor
          }));
      }
  });
  
  Effect.ScrollTo = function(element) {
      var options = arguments[1] || { },
              scrollOffsets = document.viewport.getScrollOffsets(),
              elementOffsets = $(element).cumulativeOffset();
  
      if (options.offset) elementOffsets[1] += options.offset;
  
      return new Effect.Tween(null,
              scrollOffsets.top,
              elementOffsets[1],
              options,
                             function(p) {
                                 scrollTo(scrollOffsets.left, p.round());
                             }
              );
  };
  
  /* ------------- combination effects ------------- */
  
  Effect.Fade = function(element) {
      element = $(element);
      var oldOpacity = element.getInlineOpacity();
      var options = Object.extend({
          from: element.getOpacity() || 1.0,
          to:   0.0,
          afterFinishInternal: function(effect) {
              if (effect.options.to != 0) return;
              effect.element.hide().setStyle({opacity: oldOpacity});
          }
      }, arguments[1] || { });
      return new Effect.Opacity(element, options);
  };
  
  Effect.Appear = function(element) {
      element = $(element);
      var options = Object.extend({
          from: (element.getStyle('display') == 'none' ? 0.0 : element.getOpacity() || 0.0),
          to:   1.0,
          // force Safari to render floated elements properly
          afterFinishInternal: function(effect) {
              effect.element.forceRerendering();
          },
          beforeSetup: function(effect) {
              effect.element.setOpacity(effect.options.from).show();
          }}, arguments[1] || { });
      return new Effect.Opacity(element, options);
  };
  
  Effect.Puff = function(element) {
      element = $(element);
      var oldStyle = {
          opacity: element.getInlineOpacity(),
          position: element.getStyle('position'),
          top:  element.style.top,
          left: element.style.left,
          width: element.style.width,
          height: element.style.height
      };
      return new Effect.Parallel(
              [ new Effect.Scale(element, 200,
              { sync: true, scaleFromCenter: true, scaleContent: true, restoreAfterFinish: true }),
                  new Effect.Opacity(element, { sync: true, to: 0.0 }) ],
              Object.extend({ duration: 1.0,
                  beforeSetupInternal: function(effect) {
                      Position.absolutize(effect.effects[0].element);
                  },
                  afterFinishInternal: function(effect) {
                      effect.effects[0].element.hide().setStyle(oldStyle);
                  }
              }, arguments[1] || { })
              );
  };
  
  Effect.BlindUp = function(element) {
      element = $(element);
      element.makeClipping();
      return new Effect.Scale(element, 0,
              Object.extend({ scaleContent: false,
                  scaleX: false,
                  restoreAfterFinish: true,
                  afterFinishInternal: function(effect) {
                      effect.element.hide().undoClipping();
                  }
              }, arguments[1] || { })
              );
  };
  
  Effect.BlindDown = function(element) {
      element = $(element);
      var elementDimensions = element.getDimensions();
      return new Effect.Scale(element, 100, Object.extend({
          scaleContent: false,
          scaleX: false,
          scaleFrom: 0,
          scaleMode: {originalHeight: elementDimensions.height, originalWidth: elementDimensions.width},
          restoreAfterFinish: true,
          afterSetup: function(effect) {
              effect.element.makeClipping().setStyle({height: '0px'}).show();
          },
          afterFinishInternal: function(effect) {
              effect.element.undoClipping();
          }
      }, arguments[1] || { }));
  };
  
  Effect.SwitchOff = function(element) {
      element = $(element);
      var oldOpacity = element.getInlineOpacity();
      return new Effect.Appear(element, Object.extend({
          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().makeClipping();
                  },
                  afterFinishInternal: function(effect) {
                      effect.element.hide().undoClipping().undoPositioned().setStyle({opacity: oldOpacity});
                  }
              });
          }
      }, arguments[1] || { }));
  };
  
  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().undoPositioned().setStyle(oldStyle);
                  }
              }, arguments[1] || { }));
  };
  
  Effect.Shake = function(element) {
      element = $(element);
      var options = Object.extend({
          distance: 20,
          duration: 0.5
      }, arguments[1] || {});
      var distance = parseFloat(options.distance);
      var split = parseFloat(options.duration) / 10.0;
      var oldStyle = {
          top: element.getStyle('top'),
          left: element.getStyle('left') };
      return new Effect.Move(element,
      { x:  distance, y: 0, duration: split, afterFinishInternal: function(effect) {
          new Effect.Move(effect.element,
          { x: -distance * 2, y: 0, duration: split * 2,  afterFinishInternal: function(effect) {
              new Effect.Move(effect.element,
              { x:  distance * 2, y: 0, duration: split * 2,  afterFinishInternal: function(effect) {
                  new Effect.Move(effect.element,
                  { x: -distance * 2, y: 0, duration: split * 2,  afterFinishInternal: function(effect) {
                      new Effect.Move(effect.element,
                      { x:  distance * 2, y: 0, duration: split * 2,  afterFinishInternal: function(effect) {
                          new Effect.Move(effect.element,
                          { x: -distance, y: 0, duration: split, afterFinishInternal: function(effect) {
                              effect.element.undoPositioned().setStyle(oldStyle);
                          }});
                      }});
                  }});
              }});
          }});
      }});
  };
  
  Effect.SlideDown = function(element) {
      element = $(element).cleanWhitespace();
      // SlideDown need to have the content of the element wrapped in a container element with fixed height!
      var oldInnerBottom = element.down().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.down().makePositioned();
              if (window.opera) effect.element.setStyle({top: ''});
              effect.element.makeClipping().setStyle({height: '0px'}).show();
          },
          afterUpdateInternal: function(effect) {
              effect.element.down().setStyle({bottom:
                      (effect.dims[0] - effect.element.clientHeight) + 'px' });
          },
          afterFinishInternal: function(effect) {
              effect.element.undoClipping().undoPositioned();
              effect.element.down().undoPositioned().setStyle({bottom: oldInnerBottom});
          }
      }, arguments[1] || { })
              );
  };
  
  Effect.SlideUp = function(element) {
      element = $(element).cleanWhitespace();
      var oldInnerBottom = element.down().getStyle('bottom');
      var elementDimensions = element.getDimensions();
      return new Effect.Scale(element, window.opera ? 0 : 1,
              Object.extend({ scaleContent: false,
                  scaleX: false,
                  scaleMode: 'box',
                  scaleFrom: 100,
                  scaleMode: {originalHeight: elementDimensions.height, originalWidth: elementDimensions.width},
                  restoreAfterFinish: true,
                  afterSetup: function(effect) {
                      effect.element.makePositioned();
                      effect.element.down().makePositioned();
                      if (window.opera) effect.element.setStyle({top: ''});
                      effect.element.makeClipping().show();
                  },
                  afterUpdateInternal: function(effect) {
                      effect.element.down().setStyle({bottom:
                              (effect.dims[0] - effect.element.clientHeight) + 'px' });
                  },
                  afterFinishInternal: function(effect) {
                      effect.element.hide().undoClipping().undoPositioned();
                      effect.element.down().undoPositioned().setStyle({bottom: oldInnerBottom});
                  }
              }, arguments[1] || { })
              );
  };
  
  // Bug in opera makes the TD containing this element expand for a instance after finish
  Effect.Squish = function(element) {
      return new Effect.Scale(element, window.opera ? 1 : 0, {
          restoreAfterFinish: true,
          beforeSetup: function(effect) {
              effect.element.makeClipping();
          },
          afterFinishInternal: function(effect) {
              effect.element.hide().undoClipping();
          }
      });
  };
  
  Effect.Grow = function(element) {
      element = $(element);
      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 (options.direction) {
          case 'top-left':
              initialMoveX = initialMoveY = moveX = moveY = 0;
              break;
          case 'top-right':
              initialMoveX = dims.width;
              initialMoveY = moveY = 0;
              moveX = -dims.width;
              break;
          case 'bottom-left':
              initialMoveX = moveX = 0;
              initialMoveY = dims.height;
              moveY = -dims.height;
              break;
          case 'bottom-right':
              initialMoveX = dims.width;
              initialMoveY = dims.height;
              moveX = -dims.width;
              moveY = -dims.height;
              break;
          case 'center':
              initialMoveX = dims.width / 2;
              initialMoveY = dims.height / 2;
              moveX = -dims.width / 2;
              moveY = -dims.height / 2;
              break;
      }
  
      return new Effect.Move(element, {
          x: initialMoveX,
          y: initialMoveY,
          duration: 0.01,
          beforeSetup: function(effect) {
              effect.element.hide().makeClipping().makePositioned();
          },
          afterFinishInternal: function(effect) {
              new Effect.Parallel(
                      [ 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'}).show();
                  },
                  afterFinishInternal: function(effect) {
                      effect.effects[0].element.undoClipping().undoPositioned().setStyle(oldStyle);
                  }
              }, options)
                      );
          }
      });
  };
  
  Effect.Shrink = function(element) {
      element = $(element);
      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 (options.direction) {
          case 'top-left':
              moveX = moveY = 0;
              break;
          case 'top-right':
              moveX = dims.width;
              moveY = 0;
              break;
          case 'bottom-left':
              moveX = 0;
              moveY = dims.height;
              break;
          case 'bottom-right':
              moveX = dims.width;
              moveY = dims.height;
              break;
          case 'center':
              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: 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().makeClipping();
          },
          afterFinishInternal: function(effect) {
              effect.effects[0].element.hide().undoClipping().undoPositioned().setStyle(oldStyle);
          }
      }, options)
              );
  };
  
  Effect.Pulsate = function(element) {
      element = $(element);
      var options = arguments[1] || { },
              oldOpacity = element.getInlineOpacity(),
              transition = options.transition || Effect.Transitions.linear,
              reverser = function(pos) {
                  return 1 - transition((-Math.cos((pos * (options.pulses || 5) * 2) * Math.PI) / 2) + .5);
              };
  
      return new Effect.Opacity(element,
              Object.extend(Object.extend({  duration: 2.0, from: 0,
                  afterFinishInternal: function(effect) {
                      effect.element.setStyle({opacity: oldOpacity});
                  }
              }, options), {transition: reverser}));
  };
  
  Effect.Fold = function(element) {
      element = $(element);
      var oldStyle = {
          top: element.style.top,
          left: element.style.left,
          width: element.style.width,
          height: element.style.height };
      element.makeClipping();
      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().undoClipping().setStyle(oldStyle);
                  } });
          }}, arguments[1] || { }));
  };
  
  Effect.Morph = Class.create(Effect.Base, {
      initialize: function(element) {
          this.element = $(element);
          if (!this.element) throw(Effect._elementDoesNotExistError);
          var options = Object.extend({
              style: { }
          }, arguments[1] || { });
  
          if (!Object.isString(options.style)) this.style = $H(options.style);
          else {
              if (options.style.include(':'))
                  this.style = options.style.parseStyle();
              else {
                  this.element.addClassName(options.style);
                  this.style = $H(this.element.getStyles());
                  this.element.removeClassName(options.style);
                  var css = this.element.getStyles();
                  this.style = this.style.reject(function(style) {
                      return style.value == css[style.key];
                  });
                  options.afterFinishInternal = function(effect) {
                      effect.element.addClassName(effect.options.style);
                      effect.transforms.each(function(transform) {
                          effect.element.style[transform.style] = '';
                      });
                  };
              }
          }
          this.start(options);
      },
  
      setup: function() {
          function parseColor(color) {
              if (!color || ['rgba(0, 0, 0, 0)','transparent'].include(color)) color = '#ffffff';
              color = color.parseColor();
              return $R(0, 2).map(function(i) {
                  return parseInt(color.slice(i * 2 + 1, i * 2 + 3), 16);
              });
          }
  
          this.transforms = this.style.map(function(pair) {
              var property = pair[0], value = pair[1], unit = null;
  
              if (value.parseColor('#zzzzzz') != '#zzzzzz') {
                  value = value.parseColor();
                  unit = 'color';
              } else if (property == 'opacity') {
                  value = parseFloat(value);
                  if (Prototype.Browser.IE && (!this.element.currentStyle.hasLayout))
                      this.element.setStyle({zoom: 1});
              } else if (Element.CSS_LENGTH.test(value)) {
                  var components = value.match(/^([\+\-]?[0-9\.]+)(.*)$/);
                  value = parseFloat(components[1]);
                  unit = (components.length == 3) ? components[2] : null;
              }
  
              var originalValue = this.element.getStyle(property);
              return {
                  style: property.camelize(),
                  originalValue: unit == 'color' ? parseColor(originalValue) : parseFloat(originalValue || 0),
                  targetValue: unit == 'color' ? parseColor(value) : value,
                  unit: unit
              };
          }.bind(this)).reject(function(transform) {
              return (
                      (transform.originalValue == transform.targetValue) ||
                              (
                                      transform.unit != 'color' &&
                                              (isNaN(transform.originalValue) || isNaN(transform.targetValue))
                                      )
                      );
          });
      },
      update: function(position) {
          var style = { }, transform, i = this.transforms.length;
          while (i--)
              style[(transform = this.transforms[i]).style] =
                      transform.unit == 'color' ? '#' +
                              (Math.round(transform.originalValue[0] +
                                      (transform.targetValue[0] - transform.originalValue[0]) * position)).toColorPart() +
                              (Math.round(transform.originalValue[1] +
                                      (transform.targetValue[1] - transform.originalValue[1]) * position)).toColorPart() +
                              (Math.round(transform.originalValue[2] +
                                      (transform.targetValue[2] - transform.originalValue[2]) * position)).toColorPart() :
                              (transform.originalValue +
                                      (transform.targetValue - transform.originalValue) * position).toFixed(3) +
                                      (transform.unit === null ? '' : transform.unit);
          this.element.setStyle(style, true);
      }
  });
  
  Effect.Transform = Class.create({
      initialize: function(tracks) {
          this.tracks = [];
          this.options = arguments[1] || { };
          this.addTracks(tracks);
      },
      addTracks: function(tracks) {
          tracks.each(function(track) {
              track = $H(track);
              var data = track.values().first();
              this.tracks.push($H({
                  ids:     track.keys().first(),
                  effect:  Effect.Morph,
                  options: { style: data }
              }));
          }.bind(this));
          return this;
      },
      play: function() {
          return new Effect.Parallel(
                  this.tracks.map(
                                 function(track) {
                                     var ids = track.get('ids'), effect = track.get('effect'), options = track.get('options');
                                     var elements = [$(ids) || $$(ids)].flatten();
                                     return elements.map(function(e) {
                                         return new effect(e, Object.extend({ sync:true }, options))
                                     });
                                 }).flatten(),
                  this.options
                  );
      }
  });
  
  Element.CSS_PROPERTIES = $w(
          'backgroundColor backgroundPosition borderBottomColor borderBottomStyle ' +
                  'borderBottomWidth borderLeftColor borderLeftStyle borderLeftWidth ' +
                  'borderRightColor borderRightStyle borderRightWidth borderSpacing ' +
                  'borderTopColor borderTopStyle borderTopWidth bottom clip color ' +
                  'fontSize fontWeight height left letterSpacing lineHeight ' +
                  'marginBottom marginLeft marginRight marginTop markerOffset maxHeight ' +
                  'maxWidth minHeight minWidth opacity outlineColor outlineOffset ' +
                  'outlineWidth paddingBottom paddingLeft paddingRight paddingTop ' +
                  'right textIndent top width wordSpacing zIndex');
  
  Element.CSS_LENGTH = /^(([\+\-]?[0-9\.]+)(em|ex|px|in|cm|mm|pt|pc|\%))|0$/;
  
  String.__parseStyleElement = document.createElement('div');
  String.prototype.parseStyle = function() {
      var style, styleRules = $H();
      if (Prototype.Browser.WebKit)
          style = new Element('div', {style:this}).style;
      else {
          String.__parseStyleElement.innerHTML = '<div style="' + this + '"></div>';
          style = String.__parseStyleElement.childNodes[0].style;
      }
  
      Element.CSS_PROPERTIES.each(function(property) {
          if (style[property]) styleRules.set(property, style[property]);
      });
  
      if (Prototype.Browser.IE && this.include('opacity'))
          styleRules.set('opacity', this.match(/opacity:\s*((?:0|1)?(?:\.\d*)?)/)[1]);
  
      return styleRules;
  };
  
  if (document.defaultView && document.defaultView.getComputedStyle) {
      Element.getStyles = function(element) {
          var css = document.defaultView.getComputedStyle($(element), null);
          return Element.CSS_PROPERTIES.inject({ }, function(styles, property) {
              styles[property] = css[property];
              return styles;
          });
      };
  } else {
      Element.getStyles = function(element) {
          element = $(element);
          var css = element.currentStyle, styles;
          styles = Element.CSS_PROPERTIES.inject({ }, function(results, property) {
              results[property] = css[property];
              return results;
          });
          if (!styles.opacity) styles.opacity = element.getOpacity();
          return styles;
      };
  }
  
  Effect.Methods = {
      morph: function(element, style) {
          element = $(element);
          new Effect.Morph(element, Object.extend({ style: style }, arguments[2] || { }));
          return element;
      },
      visualEffect: function(element, effect, options) {
          element = $(element);
          var s = effect.dasherize().camelize(), klass = s.charAt(0).toUpperCase() + s.substring(1);
          new Effect[klass](element, options);
          return element;
      },
      highlight: function(element, options) {
          element = $(element);
          new Effect.Highlight(element, options);
          return element;
      }
  };
  
  $w('fade appear grow shrink fold blindUp blindDown slideUp slideDown ' +
          'pulsate shake puff squish switchOff dropOut').each(
                                                             function(effect) {
                                                                 Effect.Methods[effect] = function(element, options) {
                                                                     element = $(element);
                                                                     Effect[effect.charAt(0).toUpperCase() + effect.substring(1)](element, options);
                                                                     return element;
                                                                 };
                                                             }
          );
  
  $w('getInlineOpacity forceRerendering setContentZoom collectTextNodes collectTextNodesIgnoreClass getStyles').each(
                                                                                                                    function(f) {
                                                                                                                        Effect.Methods[f] = Element[f];
                                                                                                                    }
          );
  
  Element.addMethods(Effect.Methods);