Chris@0: // Copyright (c) 2005-2008 Thomas Fuchs (http://script.aculo.us, http://mir.aculo.us)
Chris@0: // Contributors:
Chris@0: //  Justin Palmer (http://encytemedia.com/)
Chris@0: //  Mark Pilgrim (http://diveintomark.org/)
Chris@0: //  Martin Bialasinki
Chris@0: //
Chris@0: // script.aculo.us is freely distributable under the terms of an MIT-style license.
Chris@0: // For details, see the script.aculo.us web site: http://script.aculo.us/
Chris@0: 
Chris@0: // converts rgb() and #xxx to #xxxxxx format,
Chris@0: // returns self (or first argument) if not convertable
Chris@0: String.prototype.parseColor = function() {
Chris@0:   var color = '#';
Chris@0:   if (this.slice(0,4) == 'rgb(') {
Chris@0:     var cols = this.slice(4,this.length-1).split(',');
Chris@0:     var i=0; do { color += parseInt(cols[i]).toColorPart() } while (++i<3);
Chris@0:   } else {
Chris@0:     if (this.slice(0,1) == '#') {
Chris@0:       if (this.length==4) for(var i=1;i<4;i++) color += (this.charAt(i) + this.charAt(i)).toLowerCase();
Chris@0:       if (this.length==7) color = this.toLowerCase();
Chris@0:     }
Chris@0:   }
Chris@0:   return (color.length==7 ? color : (arguments[0] || this));
Chris@0: };
Chris@0: 
Chris@0: /*--------------------------------------------------------------------------*/
Chris@0: 
Chris@0: Element.collectTextNodes = function(element) {
Chris@0:   return $A($(element).childNodes).collect( function(node) {
Chris@0:     return (node.nodeType==3 ? node.nodeValue :
Chris@0:       (node.hasChildNodes() ? Element.collectTextNodes(node) : ''));
Chris@0:   }).flatten().join('');
Chris@0: };
Chris@0: 
Chris@0: Element.collectTextNodesIgnoreClass = function(element, className) {
Chris@0:   return $A($(element).childNodes).collect( function(node) {
Chris@0:     return (node.nodeType==3 ? node.nodeValue :
Chris@0:       ((node.hasChildNodes() && !Element.hasClassName(node,className)) ?
Chris@0:         Element.collectTextNodesIgnoreClass(node, className) : ''));
Chris@0:   }).flatten().join('');
Chris@0: };
Chris@0: 
Chris@0: Element.setContentZoom = function(element, percent) {
Chris@0:   element = $(element);
Chris@0:   element.setStyle({fontSize: (percent/100) + 'em'});
Chris@0:   if (Prototype.Browser.WebKit) window.scrollBy(0,0);
Chris@0:   return element;
Chris@0: };
Chris@0: 
Chris@0: Element.getInlineOpacity = function(element){
Chris@0:   return $(element).style.opacity || '';
Chris@0: };
Chris@0: 
Chris@0: Element.forceRerendering = function(element) {
Chris@0:   try {
Chris@0:     element = $(element);
Chris@0:     var n = document.createTextNode(' ');
Chris@0:     element.appendChild(n);
Chris@0:     element.removeChild(n);
Chris@0:   } catch(e) { }
Chris@0: };
Chris@0: 
Chris@0: /*--------------------------------------------------------------------------*/
Chris@0: 
Chris@0: var Effect = {
Chris@0:   _elementDoesNotExistError: {
Chris@0:     name: 'ElementDoesNotExistError',
Chris@0:     message: 'The specified DOM element does not exist, but is required for this effect to operate'
Chris@0:   },
Chris@0:   Transitions: {
Chris@0:     linear: Prototype.K,
Chris@0:     sinoidal: function(pos) {
Chris@0:       return (-Math.cos(pos*Math.PI)/2) + .5;
Chris@0:     },
Chris@0:     reverse: function(pos) {
Chris@0:       return 1-pos;
Chris@0:     },
Chris@0:     flicker: function(pos) {
Chris@0:       var pos = ((-Math.cos(pos*Math.PI)/4) + .75) + Math.random()/4;
Chris@0:       return pos > 1 ? 1 : pos;
Chris@0:     },
Chris@0:     wobble: function(pos) {
Chris@0:       return (-Math.cos(pos*Math.PI*(9*pos))/2) + .5;
Chris@0:     },
Chris@0:     pulse: function(pos, pulses) {
Chris@0:       return (-Math.cos((pos*((pulses||5)-.5)*2)*Math.PI)/2) + .5;
Chris@0:     },
Chris@0:     spring: function(pos) {
Chris@0:       return 1 - (Math.cos(pos * 4.5 * Math.PI) * Math.exp(-pos * 6));
Chris@0:     },
Chris@0:     none: function(pos) {
Chris@0:       return 0;
Chris@0:     },
Chris@0:     full: function(pos) {
Chris@0:       return 1;
Chris@0:     }
Chris@0:   },
Chris@0:   DefaultOptions: {
Chris@0:     duration:   1.0,   // seconds
Chris@0:     fps:        100,   // 100= assume 66fps max.
Chris@0:     sync:       false, // true for combining
Chris@0:     from:       0.0,
Chris@0:     to:         1.0,
Chris@0:     delay:      0.0,
Chris@0:     queue:      'parallel'
Chris@0:   },
Chris@0:   tagifyText: function(element) {
Chris@0:     var tagifyStyle = 'position:relative';
Chris@0:     if (Prototype.Browser.IE) tagifyStyle += ';zoom:1';
Chris@0: 
Chris@0:     element = $(element);
Chris@0:     $A(element.childNodes).each( function(child) {
Chris@0:       if (child.nodeType==3) {
Chris@0:         child.nodeValue.toArray().each( function(character) {
Chris@0:           element.insertBefore(
Chris@0:             new Element('span', {style: tagifyStyle}).update(
Chris@0:               character == ' ' ? String.fromCharCode(160) : character),
Chris@0:               child);
Chris@0:         });
Chris@0:         Element.remove(child);
Chris@0:       }
Chris@0:     });
Chris@0:   },
Chris@0:   multiple: function(element, effect) {
Chris@0:     var elements;
Chris@0:     if (((typeof element == 'object') ||
Chris@0:         Object.isFunction(element)) &&
Chris@0:        (element.length))
Chris@0:       elements = element;
Chris@0:     else
Chris@0:       elements = $(element).childNodes;
Chris@0: 
Chris@0:     var options = Object.extend({
Chris@0:       speed: 0.1,
Chris@0:       delay: 0.0
Chris@0:     }, arguments[2] || { });
Chris@0:     var masterDelay = options.delay;
Chris@0: 
Chris@0:     $A(elements).each( function(element, index) {
Chris@0:       new effect(element, Object.extend(options, { delay: index * options.speed + masterDelay }));
Chris@0:     });
Chris@0:   },
Chris@0:   PAIRS: {
Chris@0:     'slide':  ['SlideDown','SlideUp'],
Chris@0:     'blind':  ['BlindDown','BlindUp'],
Chris@0:     'appear': ['Appear','Fade']
Chris@0:   },
Chris@0:   toggle: function(element, effect) {
Chris@0:     element = $(element);
Chris@0:     effect = (effect || 'appear').toLowerCase();
Chris@0:     var options = Object.extend({
Chris@0:       queue: { position:'end', scope:(element.id || 'global'), limit: 1 }
Chris@0:     }, arguments[2] || { });
Chris@0:     Effect[element.visible() ?
Chris@0:       Effect.PAIRS[effect][1] : Effect.PAIRS[effect][0]](element, options);
Chris@0:   }
Chris@0: };
Chris@0: 
Chris@0: Effect.DefaultOptions.transition = Effect.Transitions.sinoidal;
Chris@0: 
Chris@0: /* ------------- core effects ------------- */
Chris@0: 
Chris@0: Effect.ScopedQueue = Class.create(Enumerable, {
Chris@0:   initialize: function() {
Chris@0:     this.effects  = [];
Chris@0:     this.interval = null;
Chris@0:   },
Chris@0:   _each: function(iterator) {
Chris@0:     this.effects._each(iterator);
Chris@0:   },
Chris@0:   add: function(effect) {
Chris@0:     var timestamp = new Date().getTime();
Chris@0: 
Chris@0:     var position = Object.isString(effect.options.queue) ?
Chris@0:       effect.options.queue : effect.options.queue.position;
Chris@0: 
Chris@0:     switch(position) {
Chris@0:       case 'front':
Chris@0:         // move unstarted effects after this effect
Chris@0:         this.effects.findAll(function(e){ return e.state=='idle' }).each( function(e) {
Chris@0:             e.startOn  += effect.finishOn;
Chris@0:             e.finishOn += effect.finishOn;
Chris@0:           });
Chris@0:         break;
Chris@0:       case 'with-last':
Chris@0:         timestamp = this.effects.pluck('startOn').max() || timestamp;
Chris@0:         break;
Chris@0:       case 'end':
Chris@0:         // start effect after last queued effect has finished
Chris@0:         timestamp = this.effects.pluck('finishOn').max() || timestamp;
Chris@0:         break;
Chris@0:     }
Chris@0: 
Chris@0:     effect.startOn  += timestamp;
Chris@0:     effect.finishOn += timestamp;
Chris@0: 
Chris@0:     if (!effect.options.queue.limit || (this.effects.length < effect.options.queue.limit))
Chris@0:       this.effects.push(effect);
Chris@0: 
Chris@0:     if (!this.interval)
Chris@0:       this.interval = setInterval(this.loop.bind(this), 15);
Chris@0:   },
Chris@0:   remove: function(effect) {
Chris@0:     this.effects = this.effects.reject(function(e) { return e==effect });
Chris@0:     if (this.effects.length == 0) {
Chris@0:       clearInterval(this.interval);
Chris@0:       this.interval = null;
Chris@0:     }
Chris@0:   },
Chris@0:   loop: function() {
Chris@0:     var timePos = new Date().getTime();
Chris@0:     for(var i=0, len=this.effects.length;i<len;i++)
Chris@0:       this.effects[i] && this.effects[i].loop(timePos);
Chris@0:   }
Chris@0: });
Chris@0: 
Chris@0: Effect.Queues = {
Chris@0:   instances: $H(),
Chris@0:   get: function(queueName) {
Chris@0:     if (!Object.isString(queueName)) return queueName;
Chris@0: 
Chris@0:     return this.instances.get(queueName) ||
Chris@0:       this.instances.set(queueName, new Effect.ScopedQueue());
Chris@0:   }
Chris@0: };
Chris@0: Effect.Queue = Effect.Queues.get('global');
Chris@0: 
Chris@0: Effect.Base = Class.create({
Chris@0:   position: null,
Chris@0:   start: function(options) {
Chris@0:     function codeForEvent(options,eventName){
Chris@0:       return (
Chris@0:         (options[eventName+'Internal'] ? 'this.options.'+eventName+'Internal(this);' : '') +
Chris@0:         (options[eventName] ? 'this.options.'+eventName+'(this);' : '')
Chris@0:       );
Chris@0:     }
Chris@0:     if (options && options.transition === false) options.transition = Effect.Transitions.linear;
Chris@0:     this.options      = Object.extend(Object.extend({ },Effect.DefaultOptions), options || { });
Chris@0:     this.currentFrame = 0;
Chris@0:     this.state        = 'idle';
Chris@0:     this.startOn      = this.options.delay*1000;
Chris@0:     this.finishOn     = this.startOn+(this.options.duration*1000);
Chris@0:     this.fromToDelta  = this.options.to-this.options.from;
Chris@0:     this.totalTime    = this.finishOn-this.startOn;
Chris@0:     this.totalFrames  = this.options.fps*this.options.duration;
Chris@0: 
Chris@0:     this.render = (function() {
Chris@0:       function dispatch(effect, eventName) {
Chris@0:         if (effect.options[eventName + 'Internal'])
Chris@0:           effect.options[eventName + 'Internal'](effect);
Chris@0:         if (effect.options[eventName])
Chris@0:           effect.options[eventName](effect);
Chris@0:       }
Chris@0: 
Chris@0:       return function(pos) {
Chris@0:         if (this.state === "idle") {
Chris@0:           this.state = "running";
Chris@0:           dispatch(this, 'beforeSetup');
Chris@0:           if (this.setup) this.setup();
Chris@0:           dispatch(this, 'afterSetup');
Chris@0:         }
Chris@0:         if (this.state === "running") {
Chris@0:           pos = (this.options.transition(pos) * this.fromToDelta) + this.options.from;
Chris@0:           this.position = pos;
Chris@0:           dispatch(this, 'beforeUpdate');
Chris@0:           if (this.update) this.update(pos);
Chris@0:           dispatch(this, 'afterUpdate');
Chris@0:         }
Chris@0:       };
Chris@0:     })();
Chris@0: 
Chris@0:     this.event('beforeStart');
Chris@0:     if (!this.options.sync)
Chris@0:       Effect.Queues.get(Object.isString(this.options.queue) ?
Chris@0:         'global' : this.options.queue.scope).add(this);
Chris@0:   },
Chris@0:   loop: function(timePos) {
Chris@0:     if (timePos >= this.startOn) {
Chris@0:       if (timePos >= this.finishOn) {
Chris@0:         this.render(1.0);
Chris@0:         this.cancel();
Chris@0:         this.event('beforeFinish');
Chris@0:         if (this.finish) this.finish();
Chris@0:         this.event('afterFinish');
Chris@0:         return;
Chris@0:       }
Chris@0:       var pos   = (timePos - this.startOn) / this.totalTime,
Chris@0:           frame = (pos * this.totalFrames).round();
Chris@0:       if (frame > this.currentFrame) {
Chris@0:         this.render(pos);
Chris@0:         this.currentFrame = frame;
Chris@0:       }
Chris@0:     }
Chris@0:   },
Chris@0:   cancel: function() {
Chris@0:     if (!this.options.sync)
Chris@0:       Effect.Queues.get(Object.isString(this.options.queue) ?
Chris@0:         'global' : this.options.queue.scope).remove(this);
Chris@0:     this.state = 'finished';
Chris@0:   },
Chris@0:   event: function(eventName) {
Chris@0:     if (this.options[eventName + 'Internal']) this.options[eventName + 'Internal'](this);
Chris@0:     if (this.options[eventName]) this.options[eventName](this);
Chris@0:   },
Chris@0:   inspect: function() {
Chris@0:     var data = $H();
Chris@0:     for(property in this)
Chris@0:       if (!Object.isFunction(this[property])) data.set(property, this[property]);
Chris@0:     return '#<Effect:' + data.inspect() + ',options:' + $H(this.options).inspect() + '>';
Chris@0:   }
Chris@0: });
Chris@0: 
Chris@0: Effect.Parallel = Class.create(Effect.Base, {
Chris@0:   initialize: function(effects) {
Chris@0:     this.effects = effects || [];
Chris@0:     this.start(arguments[1]);
Chris@0:   },
Chris@0:   update: function(position) {
Chris@0:     this.effects.invoke('render', position);
Chris@0:   },
Chris@0:   finish: function(position) {
Chris@0:     this.effects.each( function(effect) {
Chris@0:       effect.render(1.0);
Chris@0:       effect.cancel();
Chris@0:       effect.event('beforeFinish');
Chris@0:       if (effect.finish) effect.finish(position);
Chris@0:       effect.event('afterFinish');
Chris@0:     });
Chris@0:   }
Chris@0: });
Chris@0: 
Chris@0: Effect.Tween = Class.create(Effect.Base, {
Chris@0:   initialize: function(object, from, to) {
Chris@0:     object = Object.isString(object) ? $(object) : object;
Chris@0:     var args = $A(arguments), method = args.last(),
Chris@0:       options = args.length == 5 ? args[3] : null;
Chris@0:     this.method = Object.isFunction(method) ? method.bind(object) :
Chris@0:       Object.isFunction(object[method]) ? object[method].bind(object) :
Chris@0:       function(value) { object[method] = value };
Chris@0:     this.start(Object.extend({ from: from, to: to }, options || { }));
Chris@0:   },
Chris@0:   update: function(position) {
Chris@0:     this.method(position);
Chris@0:   }
Chris@0: });
Chris@0: 
Chris@0: Effect.Event = Class.create(Effect.Base, {
Chris@0:   initialize: function() {
Chris@0:     this.start(Object.extend({ duration: 0 }, arguments[0] || { }));
Chris@0:   },
Chris@0:   update: Prototype.emptyFunction
Chris@0: });
Chris@0: 
Chris@0: Effect.Opacity = Class.create(Effect.Base, {
Chris@0:   initialize: function(element) {
Chris@0:     this.element = $(element);
Chris@0:     if (!this.element) throw(Effect._elementDoesNotExistError);
Chris@0:     // make this work on IE on elements without 'layout'
Chris@0:     if (Prototype.Browser.IE && (!this.element.currentStyle.hasLayout))
Chris@0:       this.element.setStyle({zoom: 1});
Chris@0:     var options = Object.extend({
Chris@0:       from: this.element.getOpacity() || 0.0,
Chris@0:       to:   1.0
Chris@0:     }, arguments[1] || { });
Chris@0:     this.start(options);
Chris@0:   },
Chris@0:   update: function(position) {
Chris@0:     this.element.setOpacity(position);
Chris@0:   }
Chris@0: });
Chris@0: 
Chris@0: Effect.Move = Class.create(Effect.Base, {
Chris@0:   initialize: function(element) {
Chris@0:     this.element = $(element);
Chris@0:     if (!this.element) throw(Effect._elementDoesNotExistError);
Chris@0:     var options = Object.extend({
Chris@0:       x:    0,
Chris@0:       y:    0,
Chris@0:       mode: 'relative'
Chris@0:     }, arguments[1] || { });
Chris@0:     this.start(options);
Chris@0:   },
Chris@0:   setup: function() {
Chris@0:     this.element.makePositioned();
Chris@0:     this.originalLeft = parseFloat(this.element.getStyle('left') || '0');
Chris@0:     this.originalTop  = parseFloat(this.element.getStyle('top')  || '0');
Chris@0:     if (this.options.mode == 'absolute') {
Chris@0:       this.options.x = this.options.x - this.originalLeft;
Chris@0:       this.options.y = this.options.y - this.originalTop;
Chris@0:     }
Chris@0:   },
Chris@0:   update: function(position) {
Chris@0:     this.element.setStyle({
Chris@0:       left: (this.options.x  * position + this.originalLeft).round() + 'px',
Chris@0:       top:  (this.options.y  * position + this.originalTop).round()  + 'px'
Chris@0:     });
Chris@0:   }
Chris@0: });
Chris@0: 
Chris@0: // for backwards compatibility
Chris@0: Effect.MoveBy = function(element, toTop, toLeft) {
Chris@0:   return new Effect.Move(element,
Chris@0:     Object.extend({ x: toLeft, y: toTop }, arguments[3] || { }));
Chris@0: };
Chris@0: 
Chris@0: Effect.Scale = Class.create(Effect.Base, {
Chris@0:   initialize: function(element, percent) {
Chris@0:     this.element = $(element);
Chris@0:     if (!this.element) throw(Effect._elementDoesNotExistError);
Chris@0:     var options = Object.extend({
Chris@0:       scaleX: true,
Chris@0:       scaleY: true,
Chris@0:       scaleContent: true,
Chris@0:       scaleFromCenter: false,
Chris@0:       scaleMode: 'box',        // 'box' or 'contents' or { } with provided values
Chris@0:       scaleFrom: 100.0,
Chris@0:       scaleTo:   percent
Chris@0:     }, arguments[2] || { });
Chris@0:     this.start(options);
Chris@0:   },
Chris@0:   setup: function() {
Chris@0:     this.restoreAfterFinish = this.options.restoreAfterFinish || false;
Chris@0:     this.elementPositioning = this.element.getStyle('position');
Chris@0: 
Chris@0:     this.originalStyle = { };
Chris@0:     ['top','left','width','height','fontSize'].each( function(k) {
Chris@0:       this.originalStyle[k] = this.element.style[k];
Chris@0:     }.bind(this));
Chris@0: 
Chris@0:     this.originalTop  = this.element.offsetTop;
Chris@0:     this.originalLeft = this.element.offsetLeft;
Chris@0: 
Chris@0:     var fontSize = this.element.getStyle('font-size') || '100%';
Chris@0:     ['em','px','%','pt'].each( function(fontSizeType) {
Chris@0:       if (fontSize.indexOf(fontSizeType)>0) {
Chris@0:         this.fontSize     = parseFloat(fontSize);
Chris@0:         this.fontSizeType = fontSizeType;
Chris@0:       }
Chris@0:     }.bind(this));
Chris@0: 
Chris@0:     this.factor = (this.options.scaleTo - this.options.scaleFrom)/100;
Chris@0: 
Chris@0:     this.dims = null;
Chris@0:     if (this.options.scaleMode=='box')
Chris@0:       this.dims = [this.element.offsetHeight, this.element.offsetWidth];
Chris@0:     if (/^content/.test(this.options.scaleMode))
Chris@0:       this.dims = [this.element.scrollHeight, this.element.scrollWidth];
Chris@0:     if (!this.dims)
Chris@0:       this.dims = [this.options.scaleMode.originalHeight,
Chris@0:                    this.options.scaleMode.originalWidth];
Chris@0:   },
Chris@0:   update: function(position) {
Chris@0:     var currentScale = (this.options.scaleFrom/100.0) + (this.factor * position);
Chris@0:     if (this.options.scaleContent && this.fontSize)
Chris@0:       this.element.setStyle({fontSize: this.fontSize * currentScale + this.fontSizeType });
Chris@0:     this.setDimensions(this.dims[0] * currentScale, this.dims[1] * currentScale);
Chris@0:   },
Chris@0:   finish: function(position) {
Chris@0:     if (this.restoreAfterFinish) this.element.setStyle(this.originalStyle);
Chris@0:   },
Chris@0:   setDimensions: function(height, width) {
Chris@0:     var d = { };
Chris@0:     if (this.options.scaleX) d.width = width.round() + 'px';
Chris@0:     if (this.options.scaleY) d.height = height.round() + 'px';
Chris@0:     if (this.options.scaleFromCenter) {
Chris@0:       var topd  = (height - this.dims[0])/2;
Chris@0:       var leftd = (width  - this.dims[1])/2;
Chris@0:       if (this.elementPositioning == 'absolute') {
Chris@0:         if (this.options.scaleY) d.top = this.originalTop-topd + 'px';
Chris@0:         if (this.options.scaleX) d.left = this.originalLeft-leftd + 'px';
Chris@0:       } else {
Chris@0:         if (this.options.scaleY) d.top = -topd + 'px';
Chris@0:         if (this.options.scaleX) d.left = -leftd + 'px';
Chris@0:       }
Chris@0:     }
Chris@0:     this.element.setStyle(d);
Chris@0:   }
Chris@0: });
Chris@0: 
Chris@0: Effect.Highlight = Class.create(Effect.Base, {
Chris@0:   initialize: function(element) {
Chris@0:     this.element = $(element);
Chris@0:     if (!this.element) throw(Effect._elementDoesNotExistError);
Chris@0:     var options = Object.extend({ startcolor: '#ffff99' }, arguments[1] || { });
Chris@0:     this.start(options);
Chris@0:   },
Chris@0:   setup: function() {
Chris@0:     // Prevent executing on elements not in the layout flow
Chris@0:     if (this.element.getStyle('display')=='none') { this.cancel(); return; }
Chris@0:     // Disable background image during the effect
Chris@0:     this.oldStyle = { };
Chris@0:     if (!this.options.keepBackgroundImage) {
Chris@0:       this.oldStyle.backgroundImage = this.element.getStyle('background-image');
Chris@0:       this.element.setStyle({backgroundImage: 'none'});
Chris@0:     }
Chris@0:     if (!this.options.endcolor)
Chris@0:       this.options.endcolor = this.element.getStyle('background-color').parseColor('#ffffff');
Chris@0:     if (!this.options.restorecolor)
Chris@0:       this.options.restorecolor = this.element.getStyle('background-color');
Chris@0:     // init color calculations
Chris@0:     this._base  = $R(0,2).map(function(i){ return parseInt(this.options.startcolor.slice(i*2+1,i*2+3),16) }.bind(this));
Chris@0:     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));
Chris@0:   },
Chris@0:   update: function(position) {
Chris@0:     this.element.setStyle({backgroundColor: $R(0,2).inject('#',function(m,v,i){
Chris@0:       return m+((this._base[i]+(this._delta[i]*position)).round().toColorPart()); }.bind(this)) });
Chris@0:   },
Chris@0:   finish: function() {
Chris@0:     this.element.setStyle(Object.extend(this.oldStyle, {
Chris@0:       backgroundColor: this.options.restorecolor
Chris@0:     }));
Chris@0:   }
Chris@0: });
Chris@0: 
Chris@0: Effect.ScrollTo = function(element) {
Chris@0:   var options = arguments[1] || { },
Chris@0:   scrollOffsets = document.viewport.getScrollOffsets(),
Chris@0:   elementOffsets = $(element).cumulativeOffset();
Chris@0: 
Chris@0:   if (options.offset) elementOffsets[1] += options.offset;
Chris@0: 
Chris@0:   return new Effect.Tween(null,
Chris@0:     scrollOffsets.top,
Chris@0:     elementOffsets[1],
Chris@0:     options,
Chris@0:     function(p){ scrollTo(scrollOffsets.left, p.round()); }
Chris@0:   );
Chris@0: };
Chris@0: 
Chris@0: /* ------------- combination effects ------------- */
Chris@0: 
Chris@0: Effect.Fade = function(element) {
Chris@0:   element = $(element);
Chris@0:   var oldOpacity = element.getInlineOpacity();
Chris@0:   var options = Object.extend({
Chris@0:     from: element.getOpacity() || 1.0,
Chris@0:     to:   0.0,
Chris@0:     afterFinishInternal: function(effect) {
Chris@0:       if (effect.options.to!=0) return;
Chris@0:       effect.element.hide().setStyle({opacity: oldOpacity});
Chris@0:     }
Chris@0:   }, arguments[1] || { });
Chris@0:   return new Effect.Opacity(element,options);
Chris@0: };
Chris@0: 
Chris@0: Effect.Appear = function(element) {
Chris@0:   element = $(element);
Chris@0:   var options = Object.extend({
Chris@0:   from: (element.getStyle('display') == 'none' ? 0.0 : element.getOpacity() || 0.0),
Chris@0:   to:   1.0,
Chris@0:   // force Safari to render floated elements properly
Chris@0:   afterFinishInternal: function(effect) {
Chris@0:     effect.element.forceRerendering();
Chris@0:   },
Chris@0:   beforeSetup: function(effect) {
Chris@0:     effect.element.setOpacity(effect.options.from).show();
Chris@0:   }}, arguments[1] || { });
Chris@0:   return new Effect.Opacity(element,options);
Chris@0: };
Chris@0: 
Chris@0: Effect.Puff = function(element) {
Chris@0:   element = $(element);
Chris@0:   var oldStyle = {
Chris@0:     opacity: element.getInlineOpacity(),
Chris@0:     position: element.getStyle('position'),
Chris@0:     top:  element.style.top,
Chris@0:     left: element.style.left,
Chris@0:     width: element.style.width,
Chris@0:     height: element.style.height
Chris@0:   };
Chris@0:   return new Effect.Parallel(
Chris@0:    [ new Effect.Scale(element, 200,
Chris@0:       { sync: true, scaleFromCenter: true, scaleContent: true, restoreAfterFinish: true }),
Chris@0:      new Effect.Opacity(element, { sync: true, to: 0.0 } ) ],
Chris@0:      Object.extend({ duration: 1.0,
Chris@0:       beforeSetupInternal: function(effect) {
Chris@0:         Position.absolutize(effect.effects[0].element);
Chris@0:       },
Chris@0:       afterFinishInternal: function(effect) {
Chris@0:          effect.effects[0].element.hide().setStyle(oldStyle); }
Chris@0:      }, arguments[1] || { })
Chris@0:    );
Chris@0: };
Chris@0: 
Chris@0: Effect.BlindUp = function(element) {
Chris@0:   element = $(element);
Chris@0:   element.makeClipping();
Chris@0:   return new Effect.Scale(element, 0,
Chris@0:     Object.extend({ scaleContent: false,
Chris@0:       scaleX: false,
Chris@0:       restoreAfterFinish: true,
Chris@0:       afterFinishInternal: function(effect) {
Chris@0:         effect.element.hide().undoClipping();
Chris@0:       }
Chris@0:     }, arguments[1] || { })
Chris@0:   );
Chris@0: };
Chris@0: 
Chris@0: Effect.BlindDown = function(element) {
Chris@0:   element = $(element);
Chris@0:   var elementDimensions = element.getDimensions();
Chris@0:   return new Effect.Scale(element, 100, Object.extend({
Chris@0:     scaleContent: false,
Chris@0:     scaleX: false,
Chris@0:     scaleFrom: 0,
Chris@0:     scaleMode: {originalHeight: elementDimensions.height, originalWidth: elementDimensions.width},
Chris@0:     restoreAfterFinish: true,
Chris@0:     afterSetup: function(effect) {
Chris@0:       effect.element.makeClipping().setStyle({height: '0px'}).show();
Chris@0:     },
Chris@0:     afterFinishInternal: function(effect) {
Chris@0:       effect.element.undoClipping();
Chris@0:     }
Chris@0:   }, arguments[1] || { }));
Chris@0: };
Chris@0: 
Chris@0: Effect.SwitchOff = function(element) {
Chris@0:   element = $(element);
Chris@0:   var oldOpacity = element.getInlineOpacity();
Chris@0:   return new Effect.Appear(element, Object.extend({
Chris@0:     duration: 0.4,
Chris@0:     from: 0,
Chris@0:     transition: Effect.Transitions.flicker,
Chris@0:     afterFinishInternal: function(effect) {
Chris@0:       new Effect.Scale(effect.element, 1, {
Chris@0:         duration: 0.3, scaleFromCenter: true,
Chris@0:         scaleX: false, scaleContent: false, restoreAfterFinish: true,
Chris@0:         beforeSetup: function(effect) {
Chris@0:           effect.element.makePositioned().makeClipping();
Chris@0:         },
Chris@0:         afterFinishInternal: function(effect) {
Chris@0:           effect.element.hide().undoClipping().undoPositioned().setStyle({opacity: oldOpacity});
Chris@0:         }
Chris@0:       });
Chris@0:     }
Chris@0:   }, arguments[1] || { }));
Chris@0: };
Chris@0: 
Chris@0: Effect.DropOut = function(element) {
Chris@0:   element = $(element);
Chris@0:   var oldStyle = {
Chris@0:     top: element.getStyle('top'),
Chris@0:     left: element.getStyle('left'),
Chris@0:     opacity: element.getInlineOpacity() };
Chris@0:   return new Effect.Parallel(
Chris@0:     [ new Effect.Move(element, {x: 0, y: 100, sync: true }),
Chris@0:       new Effect.Opacity(element, { sync: true, to: 0.0 }) ],
Chris@0:     Object.extend(
Chris@0:       { duration: 0.5,
Chris@0:         beforeSetup: function(effect) {
Chris@0:           effect.effects[0].element.makePositioned();
Chris@0:         },
Chris@0:         afterFinishInternal: function(effect) {
Chris@0:           effect.effects[0].element.hide().undoPositioned().setStyle(oldStyle);
Chris@0:         }
Chris@0:       }, arguments[1] || { }));
Chris@0: };
Chris@0: 
Chris@0: Effect.Shake = function(element) {
Chris@0:   element = $(element);
Chris@0:   var options = Object.extend({
Chris@0:     distance: 20,
Chris@0:     duration: 0.5
Chris@0:   }, arguments[1] || {});
Chris@0:   var distance = parseFloat(options.distance);
Chris@0:   var split = parseFloat(options.duration) / 10.0;
Chris@0:   var oldStyle = {
Chris@0:     top: element.getStyle('top'),
Chris@0:     left: element.getStyle('left') };
Chris@0:     return new Effect.Move(element,
Chris@0:       { x:  distance, y: 0, duration: split, afterFinishInternal: function(effect) {
Chris@0:     new Effect.Move(effect.element,
Chris@0:       { x: -distance*2, y: 0, duration: split*2,  afterFinishInternal: function(effect) {
Chris@0:     new Effect.Move(effect.element,
Chris@0:       { x:  distance*2, y: 0, duration: split*2,  afterFinishInternal: function(effect) {
Chris@0:     new Effect.Move(effect.element,
Chris@0:       { x: -distance*2, y: 0, duration: split*2,  afterFinishInternal: function(effect) {
Chris@0:     new Effect.Move(effect.element,
Chris@0:       { x:  distance*2, y: 0, duration: split*2,  afterFinishInternal: function(effect) {
Chris@0:     new Effect.Move(effect.element,
Chris@0:       { x: -distance, y: 0, duration: split, afterFinishInternal: function(effect) {
Chris@0:         effect.element.undoPositioned().setStyle(oldStyle);
Chris@0:   }}); }}); }}); }}); }}); }});
Chris@0: };
Chris@0: 
Chris@0: Effect.SlideDown = function(element) {
Chris@0:   element = $(element).cleanWhitespace();
Chris@0:   // SlideDown need to have the content of the element wrapped in a container element with fixed height!
Chris@0:   var oldInnerBottom = element.down().getStyle('bottom');
Chris@0:   var elementDimensions = element.getDimensions();
Chris@0:   return new Effect.Scale(element, 100, Object.extend({
Chris@0:     scaleContent: false,
Chris@0:     scaleX: false,
Chris@0:     scaleFrom: window.opera ? 0 : 1,
Chris@0:     scaleMode: {originalHeight: elementDimensions.height, originalWidth: elementDimensions.width},
Chris@0:     restoreAfterFinish: true,
Chris@0:     afterSetup: function(effect) {
Chris@0:       effect.element.makePositioned();
Chris@0:       effect.element.down().makePositioned();
Chris@0:       if (window.opera) effect.element.setStyle({top: ''});
Chris@0:       effect.element.makeClipping().setStyle({height: '0px'}).show();
Chris@0:     },
Chris@0:     afterUpdateInternal: function(effect) {
Chris@0:       effect.element.down().setStyle({bottom:
Chris@0:         (effect.dims[0] - effect.element.clientHeight) + 'px' });
Chris@0:     },
Chris@0:     afterFinishInternal: function(effect) {
Chris@0:       effect.element.undoClipping().undoPositioned();
Chris@0:       effect.element.down().undoPositioned().setStyle({bottom: oldInnerBottom}); }
Chris@0:     }, arguments[1] || { })
Chris@0:   );
Chris@0: };
Chris@0: 
Chris@0: Effect.SlideUp = function(element) {
Chris@0:   element = $(element).cleanWhitespace();
Chris@0:   var oldInnerBottom = element.down().getStyle('bottom');
Chris@0:   var elementDimensions = element.getDimensions();
Chris@0:   return new Effect.Scale(element, window.opera ? 0 : 1,
Chris@0:    Object.extend({ scaleContent: false,
Chris@0:     scaleX: false,
Chris@0:     scaleMode: 'box',
Chris@0:     scaleFrom: 100,
Chris@0:     scaleMode: {originalHeight: elementDimensions.height, originalWidth: elementDimensions.width},
Chris@0:     restoreAfterFinish: true,
Chris@0:     afterSetup: function(effect) {
Chris@0:       effect.element.makePositioned();
Chris@0:       effect.element.down().makePositioned();
Chris@0:       if (window.opera) effect.element.setStyle({top: ''});
Chris@0:       effect.element.makeClipping().show();
Chris@0:     },
Chris@0:     afterUpdateInternal: function(effect) {
Chris@0:       effect.element.down().setStyle({bottom:
Chris@0:         (effect.dims[0] - effect.element.clientHeight) + 'px' });
Chris@0:     },
Chris@0:     afterFinishInternal: function(effect) {
Chris@0:       effect.element.hide().undoClipping().undoPositioned();
Chris@0:       effect.element.down().undoPositioned().setStyle({bottom: oldInnerBottom});
Chris@0:     }
Chris@0:    }, arguments[1] || { })
Chris@0:   );
Chris@0: };
Chris@0: 
Chris@0: // Bug in opera makes the TD containing this element expand for a instance after finish
Chris@0: Effect.Squish = function(element) {
Chris@0:   return new Effect.Scale(element, window.opera ? 1 : 0, {
Chris@0:     restoreAfterFinish: true,
Chris@0:     beforeSetup: function(effect) {
Chris@0:       effect.element.makeClipping();
Chris@0:     },
Chris@0:     afterFinishInternal: function(effect) {
Chris@0:       effect.element.hide().undoClipping();
Chris@0:     }
Chris@0:   });
Chris@0: };
Chris@0: 
Chris@0: Effect.Grow = function(element) {
Chris@0:   element = $(element);
Chris@0:   var options = Object.extend({
Chris@0:     direction: 'center',
Chris@0:     moveTransition: Effect.Transitions.sinoidal,
Chris@0:     scaleTransition: Effect.Transitions.sinoidal,
Chris@0:     opacityTransition: Effect.Transitions.full
Chris@0:   }, arguments[1] || { });
Chris@0:   var oldStyle = {
Chris@0:     top: element.style.top,
Chris@0:     left: element.style.left,
Chris@0:     height: element.style.height,
Chris@0:     width: element.style.width,
Chris@0:     opacity: element.getInlineOpacity() };
Chris@0: 
Chris@0:   var dims = element.getDimensions();
Chris@0:   var initialMoveX, initialMoveY;
Chris@0:   var moveX, moveY;
Chris@0: 
Chris@0:   switch (options.direction) {
Chris@0:     case 'top-left':
Chris@0:       initialMoveX = initialMoveY = moveX = moveY = 0;
Chris@0:       break;
Chris@0:     case 'top-right':
Chris@0:       initialMoveX = dims.width;
Chris@0:       initialMoveY = moveY = 0;
Chris@0:       moveX = -dims.width;
Chris@0:       break;
Chris@0:     case 'bottom-left':
Chris@0:       initialMoveX = moveX = 0;
Chris@0:       initialMoveY = dims.height;
Chris@0:       moveY = -dims.height;
Chris@0:       break;
Chris@0:     case 'bottom-right':
Chris@0:       initialMoveX = dims.width;
Chris@0:       initialMoveY = dims.height;
Chris@0:       moveX = -dims.width;
Chris@0:       moveY = -dims.height;
Chris@0:       break;
Chris@0:     case 'center':
Chris@0:       initialMoveX = dims.width / 2;
Chris@0:       initialMoveY = dims.height / 2;
Chris@0:       moveX = -dims.width / 2;
Chris@0:       moveY = -dims.height / 2;
Chris@0:       break;
Chris@0:   }
Chris@0: 
Chris@0:   return new Effect.Move(element, {
Chris@0:     x: initialMoveX,
Chris@0:     y: initialMoveY,
Chris@0:     duration: 0.01,
Chris@0:     beforeSetup: function(effect) {
Chris@0:       effect.element.hide().makeClipping().makePositioned();
Chris@0:     },
Chris@0:     afterFinishInternal: function(effect) {
Chris@0:       new Effect.Parallel(
Chris@0:         [ new Effect.Opacity(effect.element, { sync: true, to: 1.0, from: 0.0, transition: options.opacityTransition }),
Chris@0:           new Effect.Move(effect.element, { x: moveX, y: moveY, sync: true, transition: options.moveTransition }),
Chris@0:           new Effect.Scale(effect.element, 100, {
Chris@0:             scaleMode: { originalHeight: dims.height, originalWidth: dims.width },
Chris@0:             sync: true, scaleFrom: window.opera ? 1 : 0, transition: options.scaleTransition, restoreAfterFinish: true})
Chris@0:         ], Object.extend({
Chris@0:              beforeSetup: function(effect) {
Chris@0:                effect.effects[0].element.setStyle({height: '0px'}).show();
Chris@0:              },
Chris@0:              afterFinishInternal: function(effect) {
Chris@0:                effect.effects[0].element.undoClipping().undoPositioned().setStyle(oldStyle);
Chris@0:              }
Chris@0:            }, options)
Chris@0:       );
Chris@0:     }
Chris@0:   });
Chris@0: };
Chris@0: 
Chris@0: Effect.Shrink = function(element) {
Chris@0:   element = $(element);
Chris@0:   var options = Object.extend({
Chris@0:     direction: 'center',
Chris@0:     moveTransition: Effect.Transitions.sinoidal,
Chris@0:     scaleTransition: Effect.Transitions.sinoidal,
Chris@0:     opacityTransition: Effect.Transitions.none
Chris@0:   }, arguments[1] || { });
Chris@0:   var oldStyle = {
Chris@0:     top: element.style.top,
Chris@0:     left: element.style.left,
Chris@0:     height: element.style.height,
Chris@0:     width: element.style.width,
Chris@0:     opacity: element.getInlineOpacity() };
Chris@0: 
Chris@0:   var dims = element.getDimensions();
Chris@0:   var moveX, moveY;
Chris@0: 
Chris@0:   switch (options.direction) {
Chris@0:     case 'top-left':
Chris@0:       moveX = moveY = 0;
Chris@0:       break;
Chris@0:     case 'top-right':
Chris@0:       moveX = dims.width;
Chris@0:       moveY = 0;
Chris@0:       break;
Chris@0:     case 'bottom-left':
Chris@0:       moveX = 0;
Chris@0:       moveY = dims.height;
Chris@0:       break;
Chris@0:     case 'bottom-right':
Chris@0:       moveX = dims.width;
Chris@0:       moveY = dims.height;
Chris@0:       break;
Chris@0:     case 'center':
Chris@0:       moveX = dims.width / 2;
Chris@0:       moveY = dims.height / 2;
Chris@0:       break;
Chris@0:   }
Chris@0: 
Chris@0:   return new Effect.Parallel(
Chris@0:     [ new Effect.Opacity(element, { sync: true, to: 0.0, from: 1.0, transition: options.opacityTransition }),
Chris@0:       new Effect.Scale(element, window.opera ? 1 : 0, { sync: true, transition: options.scaleTransition, restoreAfterFinish: true}),
Chris@0:       new Effect.Move(element, { x: moveX, y: moveY, sync: true, transition: options.moveTransition })
Chris@0:     ], Object.extend({
Chris@0:          beforeStartInternal: function(effect) {
Chris@0:            effect.effects[0].element.makePositioned().makeClipping();
Chris@0:          },
Chris@0:          afterFinishInternal: function(effect) {
Chris@0:            effect.effects[0].element.hide().undoClipping().undoPositioned().setStyle(oldStyle); }
Chris@0:        }, options)
Chris@0:   );
Chris@0: };
Chris@0: 
Chris@0: Effect.Pulsate = function(element) {
Chris@0:   element = $(element);
Chris@0:   var options    = arguments[1] || { },
Chris@0:     oldOpacity = element.getInlineOpacity(),
Chris@0:     transition = options.transition || Effect.Transitions.linear,
Chris@0:     reverser   = function(pos){
Chris@0:       return 1 - transition((-Math.cos((pos*(options.pulses||5)*2)*Math.PI)/2) + .5);
Chris@0:     };
Chris@0: 
Chris@0:   return new Effect.Opacity(element,
Chris@0:     Object.extend(Object.extend({  duration: 2.0, from: 0,
Chris@0:       afterFinishInternal: function(effect) { effect.element.setStyle({opacity: oldOpacity}); }
Chris@0:     }, options), {transition: reverser}));
Chris@0: };
Chris@0: 
Chris@0: Effect.Fold = function(element) {
Chris@0:   element = $(element);
Chris@0:   var oldStyle = {
Chris@0:     top: element.style.top,
Chris@0:     left: element.style.left,
Chris@0:     width: element.style.width,
Chris@0:     height: element.style.height };
Chris@0:   element.makeClipping();
Chris@0:   return new Effect.Scale(element, 5, Object.extend({
Chris@0:     scaleContent: false,
Chris@0:     scaleX: false,
Chris@0:     afterFinishInternal: function(effect) {
Chris@0:     new Effect.Scale(element, 1, {
Chris@0:       scaleContent: false,
Chris@0:       scaleY: false,
Chris@0:       afterFinishInternal: function(effect) {
Chris@0:         effect.element.hide().undoClipping().setStyle(oldStyle);
Chris@0:       } });
Chris@0:   }}, arguments[1] || { }));
Chris@0: };
Chris@0: 
Chris@0: Effect.Morph = Class.create(Effect.Base, {
Chris@0:   initialize: function(element) {
Chris@0:     this.element = $(element);
Chris@0:     if (!this.element) throw(Effect._elementDoesNotExistError);
Chris@0:     var options = Object.extend({
Chris@0:       style: { }
Chris@0:     }, arguments[1] || { });
Chris@0: 
Chris@0:     if (!Object.isString(options.style)) this.style = $H(options.style);
Chris@0:     else {
Chris@0:       if (options.style.include(':'))
Chris@0:         this.style = options.style.parseStyle();
Chris@0:       else {
Chris@0:         this.element.addClassName(options.style);
Chris@0:         this.style = $H(this.element.getStyles());
Chris@0:         this.element.removeClassName(options.style);
Chris@0:         var css = this.element.getStyles();
Chris@0:         this.style = this.style.reject(function(style) {
Chris@0:           return style.value == css[style.key];
Chris@0:         });
Chris@0:         options.afterFinishInternal = function(effect) {
Chris@0:           effect.element.addClassName(effect.options.style);
Chris@0:           effect.transforms.each(function(transform) {
Chris@0:             effect.element.style[transform.style] = '';
Chris@0:           });
Chris@0:         };
Chris@0:       }
Chris@0:     }
Chris@0:     this.start(options);
Chris@0:   },
Chris@0: 
Chris@0:   setup: function(){
Chris@0:     function parseColor(color){
Chris@0:       if (!color || ['rgba(0, 0, 0, 0)','transparent'].include(color)) color = '#ffffff';
Chris@0:       color = color.parseColor();
Chris@0:       return $R(0,2).map(function(i){
Chris@0:         return parseInt( color.slice(i*2+1,i*2+3), 16 );
Chris@0:       });
Chris@0:     }
Chris@0:     this.transforms = this.style.map(function(pair){
Chris@0:       var property = pair[0], value = pair[1], unit = null;
Chris@0: 
Chris@0:       if (value.parseColor('#zzzzzz') != '#zzzzzz') {
Chris@0:         value = value.parseColor();
Chris@0:         unit  = 'color';
Chris@0:       } else if (property == 'opacity') {
Chris@0:         value = parseFloat(value);
Chris@0:         if (Prototype.Browser.IE && (!this.element.currentStyle.hasLayout))
Chris@0:           this.element.setStyle({zoom: 1});
Chris@0:       } else if (Element.CSS_LENGTH.test(value)) {
Chris@0:           var components = value.match(/^([\+\-]?[0-9\.]+)(.*)$/);
Chris@0:           value = parseFloat(components[1]);
Chris@0:           unit = (components.length == 3) ? components[2] : null;
Chris@0:       }
Chris@0: 
Chris@0:       var originalValue = this.element.getStyle(property);
Chris@0:       return {
Chris@0:         style: property.camelize(),
Chris@0:         originalValue: unit=='color' ? parseColor(originalValue) : parseFloat(originalValue || 0),
Chris@0:         targetValue: unit=='color' ? parseColor(value) : value,
Chris@0:         unit: unit
Chris@0:       };
Chris@0:     }.bind(this)).reject(function(transform){
Chris@0:       return (
Chris@0:         (transform.originalValue == transform.targetValue) ||
Chris@0:         (
Chris@0:           transform.unit != 'color' &&
Chris@0:           (isNaN(transform.originalValue) || isNaN(transform.targetValue))
Chris@0:         )
Chris@0:       );
Chris@0:     });
Chris@0:   },
Chris@0:   update: function(position) {
Chris@0:     var style = { }, transform, i = this.transforms.length;
Chris@0:     while(i--)
Chris@0:       style[(transform = this.transforms[i]).style] =
Chris@0:         transform.unit=='color' ? '#'+
Chris@0:           (Math.round(transform.originalValue[0]+
Chris@0:             (transform.targetValue[0]-transform.originalValue[0])*position)).toColorPart() +
Chris@0:           (Math.round(transform.originalValue[1]+
Chris@0:             (transform.targetValue[1]-transform.originalValue[1])*position)).toColorPart() +
Chris@0:           (Math.round(transform.originalValue[2]+
Chris@0:             (transform.targetValue[2]-transform.originalValue[2])*position)).toColorPart() :
Chris@0:         (transform.originalValue +
Chris@0:           (transform.targetValue - transform.originalValue) * position).toFixed(3) +
Chris@0:             (transform.unit === null ? '' : transform.unit);
Chris@0:     this.element.setStyle(style, true);
Chris@0:   }
Chris@0: });
Chris@0: 
Chris@0: Effect.Transform = Class.create({
Chris@0:   initialize: function(tracks){
Chris@0:     this.tracks  = [];
Chris@0:     this.options = arguments[1] || { };
Chris@0:     this.addTracks(tracks);
Chris@0:   },
Chris@0:   addTracks: function(tracks){
Chris@0:     tracks.each(function(track){
Chris@0:       track = $H(track);
Chris@0:       var data = track.values().first();
Chris@0:       this.tracks.push($H({
Chris@0:         ids:     track.keys().first(),
Chris@0:         effect:  Effect.Morph,
Chris@0:         options: { style: data }
Chris@0:       }));
Chris@0:     }.bind(this));
Chris@0:     return this;
Chris@0:   },
Chris@0:   play: function(){
Chris@0:     return new Effect.Parallel(
Chris@0:       this.tracks.map(function(track){
Chris@0:         var ids = track.get('ids'), effect = track.get('effect'), options = track.get('options');
Chris@0:         var elements = [$(ids) || $$(ids)].flatten();
Chris@0:         return elements.map(function(e){ return new effect(e, Object.extend({ sync:true }, options)) });
Chris@0:       }).flatten(),
Chris@0:       this.options
Chris@0:     );
Chris@0:   }
Chris@0: });
Chris@0: 
Chris@0: Element.CSS_PROPERTIES = $w(
Chris@0:   'backgroundColor backgroundPosition borderBottomColor borderBottomStyle ' +
Chris@0:   'borderBottomWidth borderLeftColor borderLeftStyle borderLeftWidth ' +
Chris@0:   'borderRightColor borderRightStyle borderRightWidth borderSpacing ' +
Chris@0:   'borderTopColor borderTopStyle borderTopWidth bottom clip color ' +
Chris@0:   'fontSize fontWeight height left letterSpacing lineHeight ' +
Chris@0:   'marginBottom marginLeft marginRight marginTop markerOffset maxHeight '+
Chris@0:   'maxWidth minHeight minWidth opacity outlineColor outlineOffset ' +
Chris@0:   'outlineWidth paddingBottom paddingLeft paddingRight paddingTop ' +
Chris@0:   'right textIndent top width wordSpacing zIndex');
Chris@0: 
Chris@0: Element.CSS_LENGTH = /^(([\+\-]?[0-9\.]+)(em|ex|px|in|cm|mm|pt|pc|\%))|0$/;
Chris@0: 
Chris@0: String.__parseStyleElement = document.createElement('div');
Chris@0: String.prototype.parseStyle = function(){
Chris@0:   var style, styleRules = $H();
Chris@0:   if (Prototype.Browser.WebKit)
Chris@0:     style = new Element('div',{style:this}).style;
Chris@0:   else {
Chris@0:     String.__parseStyleElement.innerHTML = '<div style="' + this + '"></div>';
Chris@0:     style = String.__parseStyleElement.childNodes[0].style;
Chris@0:   }
Chris@0: 
Chris@0:   Element.CSS_PROPERTIES.each(function(property){
Chris@0:     if (style[property]) styleRules.set(property, style[property]);
Chris@0:   });
Chris@0: 
Chris@0:   if (Prototype.Browser.IE && this.include('opacity'))
Chris@0:     styleRules.set('opacity', this.match(/opacity:\s*((?:0|1)?(?:\.\d*)?)/)[1]);
Chris@0: 
Chris@0:   return styleRules;
Chris@0: };
Chris@0: 
Chris@0: if (document.defaultView && document.defaultView.getComputedStyle) {
Chris@0:   Element.getStyles = function(element) {
Chris@0:     var css = document.defaultView.getComputedStyle($(element), null);
Chris@0:     return Element.CSS_PROPERTIES.inject({ }, function(styles, property) {
Chris@0:       styles[property] = css[property];
Chris@0:       return styles;
Chris@0:     });
Chris@0:   };
Chris@0: } else {
Chris@0:   Element.getStyles = function(element) {
Chris@0:     element = $(element);
Chris@0:     var css = element.currentStyle, styles;
Chris@0:     styles = Element.CSS_PROPERTIES.inject({ }, function(results, property) {
Chris@0:       results[property] = css[property];
Chris@0:       return results;
Chris@0:     });
Chris@0:     if (!styles.opacity) styles.opacity = element.getOpacity();
Chris@0:     return styles;
Chris@0:   };
Chris@0: }
Chris@0: 
Chris@0: Effect.Methods = {
Chris@0:   morph: function(element, style) {
Chris@0:     element = $(element);
Chris@0:     new Effect.Morph(element, Object.extend({ style: style }, arguments[2] || { }));
Chris@0:     return element;
Chris@0:   },
Chris@0:   visualEffect: function(element, effect, options) {
Chris@0:     element = $(element);
Chris@0:     var s = effect.dasherize().camelize(), klass = s.charAt(0).toUpperCase() + s.substring(1);
Chris@0:     new Effect[klass](element, options);
Chris@0:     return element;
Chris@0:   },
Chris@0:   highlight: function(element, options) {
Chris@0:     element = $(element);
Chris@0:     new Effect.Highlight(element, options);
Chris@0:     return element;
Chris@0:   }
Chris@0: };
Chris@0: 
Chris@0: $w('fade appear grow shrink fold blindUp blindDown slideUp slideDown '+
Chris@0:   'pulsate shake puff squish switchOff dropOut').each(
Chris@0:   function(effect) {
Chris@0:     Effect.Methods[effect] = function(element, options){
Chris@0:       element = $(element);
Chris@0:       Effect[effect.charAt(0).toUpperCase() + effect.substring(1)](element, options);
Chris@0:       return element;
Chris@0:     };
Chris@0:   }
Chris@0: );
Chris@0: 
Chris@0: $w('getInlineOpacity forceRerendering setContentZoom collectTextNodes collectTextNodesIgnoreClass getStyles').each(
Chris@0:   function(f) { Effect.Methods[f] = Element[f]; }
Chris@0: );
Chris@0: 
Chris@0: Element.addMethods(Effect.Methods);