// script.aculo.us effects.js v1.7.0, Fri Jan 19 19:16:36 CET 2007

// Copyright (c) 2005, 2006 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(navigator.appVersion.indexOf('AppleWebKit')>0) window.scrollBy(0,0);
return element;
}

Element.getOpacity = function(element){
return $(element).getStyle('opacity');
}

Element.setOpacity = function(element, value){
return $(element).setStyle({opacity:value});
}

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) { }
};

/*--------------------------------------------------------------------------*/

Array.prototype.call = function() {
var args = arguments;
this.each(function(f){ f.apply(this, args) });
}

/*--------------------------------------------------------------------------*/

var Effect = {
_elementDoesNotExistError: {
name: 'ElementDoesNotExistError',
message: 'The specified DOM element does not exist, but is required for this effect to operate'
},
tagifyText: function(element) {
if(typeof Builder == 'undefined')
 throw("Effect.tagifyText requires including script.aculo.us' builder.js library");
 
var tagifyStyle = 'position:relative';
if(/MSIE/.test(navigator.userAgent) && !window.opera) tagifyStyle += ';zoom:1';

element = $(element);
$A(element.childNodes).each( function(child) {
 if(child.nodeType==3) {
	 child.nodeValue.toArray().each( function(character) {
		 element.insertBefore(
			 Builder.node('span',{style: tagifyStyle},
				 character == ' ' ? String.fromCharCode(160) : character), 
				 child);
	 });
	 Element.remove(child);
 }
});
},
multiple: function(element, effect) {
var elements;
if(((typeof element == 'object') || 
	 (typeof element == 'function')) && 
	(element.length))
 elements = element;
else
 elements = $(element).childNodes;
 
var options = Object.extend({
 speed: 0.1,
 delay: 0.0
}, arguments[2] || {});
var masterDelay = options.delay;

$A(elements).each( function(element, index) {
 new effect(element, Object.extend(options, { delay: index * options.speed + masterDelay }));
});
},
PAIRS: {
'slide':	['SlideDown','SlideUp'],
'blind':	['BlindDown','BlindUp'],
'appear': ['Appear','Fade']
},
toggle: function(element, effect) {
element = $(element);
effect = (effect || 'appear').toLowerCase();
var options = Object.extend({
 queue: { position:'end', scope:(element.id || 'global'), limit: 1 }
}, arguments[2] || {});
Effect[element.visible() ? 
 Effect.PAIRS[effect][1] : Effect.PAIRS[effect][0]](element, options);
}
};

var Effect2 = Effect; // deprecated

/* ------------- transitions ------------- */

Effect.Transitions = {
linear: Prototype.K,
sinoidal: function(pos) {
return (-Math.cos(pos*Math.PI)/2) + 0.5;
},
reverse: function(pos) {
return 1-pos;
},
flicker: function(pos) {
return ((-Math.cos(pos*Math.PI)/4) + 0.75) + Math.random()/4;
},
wobble: function(pos) {
return (-Math.cos(pos*Math.PI*(9*pos))/2) + 0.5;
},
pulse: function(pos, pulses) { 
pulses = pulses || 5; 
return (
 Math.round((pos % (1/pulses)) * pulses) == 0 ? 
			 ((pos * pulses * 2) - Math.floor(pos * pulses * 2)) : 
	 1 - ((pos * pulses * 2) - Math.floor(pos * pulses * 2))
 );
},
none: function(pos) {
return 0;
},
full: function(pos) {
return 1;
}
};

/* ------------- core effects ------------- */

Effect.ScopedQueue = Class.create();
Object.extend(Object.extend(Effect.ScopedQueue.prototype, Enumerable), {
initialize: function() {
this.effects	= [];
this.interval = null;
},
_each: function(iterator) {
this.effects._each(iterator);
},
add: function(effect) {
var timestamp = new Date().getTime();

var position = (typeof effect.options.queue == 'string') ? 
 effect.options.queue : effect.options.queue.position;

switch(position) {
 case 'front':
	 // move unstarted effects after this effect	
	 this.effects.findAll(function(e){ return e.state=='idle' }).each( function(e) {
			 e.startOn	+= effect.finishOn;
			 e.finishOn += effect.finishOn;
		 });
	 break;
 case '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++) 
 if(this.effects[i]) this.effects[i].loop(timePos);
}
});

Effect.Queues = {
instances: $H(),
get: function(queueName) {
if(typeof queueName != 'string') return queueName;

if(!this.instances[queueName])
 this.instances[queueName] = new Effect.ScopedQueue();
 
return this.instances[queueName];
}
}
Effect.Queue = Effect.Queues.get('global');

Effect.DefaultOptions = {
transition: Effect.Transitions.sinoidal,
duration:	 1.0,	 // seconds
fps:				60.0,	// max. 60fps due to Effect.Queue implementation
sync:			 false, // true for combining
from:			 0.0,
to:				 1.0,
delay:			0.0,
queue:			'parallel'
}

Effect.Base = function() {};
Effect.Base.prototype = {
position: null,
start: function(options) {
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.event('beforeStart');
if(!this.options.sync)
 Effect.Queues.get(typeof this.options.queue == 'string' ? 
	 'global' : this.options.queue.scope).add(this);
},
loop: function(timePos) {
if(timePos >= this.startOn) {
 if(timePos >= this.finishOn) {
	 this.render(1.0);
	 this.cancel();
	 this.event('beforeFinish');
	 if(this.finish) this.finish(); 
	 this.event('afterFinish');
	 return;	
 }
 var pos	 = (timePos - this.startOn) / (this.finishOn - this.startOn);
 var frame = Math.round(pos * this.options.fps * this.options.duration);
 if(frame > this.currentFrame) {
	 this.render(pos);
	 this.currentFrame = frame;
 }
}
},
render: function(pos) {
if(this.state == 'idle') {
 this.state = 'running';
 this.event('beforeSetup');
 if(this.setup) this.setup();
 this.event('afterSetup');
}
if(this.state == 'running') {
 if(this.options.transition) pos = this.options.transition(pos);
 pos *= (this.options.to-this.options.from);
 pos += this.options.from;
 this.position = pos;
 this.event('beforeUpdate');
 if(this.update) this.update(pos);
 this.event('afterUpdate');
}
},
cancel: function() {
if(!this.options.sync)
 Effect.Queues.get(typeof this.options.queue == 'string' ? 
	 '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(typeof this[property] != 'function') data[property] = this[property];
return '#<Effect:' + data.inspect() + ',options:' + $H(this.options).inspect() + '>';
}
}

Effect.Parallel = Class.create();
Object.extend(Object.extend(Effect.Parallel.prototype, Effect.Base.prototype), {
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.Event = Class.create();
Object.extend(Object.extend(Effect.Event.prototype, Effect.Base.prototype), {
initialize: function() {
var options = Object.extend({
 duration: 0
}, arguments[0] || {});
this.start(options);
},
update: Prototype.emptyFunction
});

Effect.Opacity = Class.create();
Object.extend(Object.extend(Effect.Opacity.prototype, Effect.Base.prototype), {
initialize: function(element) {
this.element = $(element);
if(!this.element) throw(Effect._elementDoesNotExistError);
// make this work on IE on elements without 'layout'
if(/MSIE/.test(navigator.userAgent) && !window.opera && (!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();
Object.extend(Object.extend(Effect.Move.prototype, Effect.Base.prototype), {
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() {
// Bug in Opera: Opera returns the "real" position of a static element or
// relative element that does not have top/left explicitly set.
// ==> Always set top and left for position relative elements in your stylesheets 
// (to 0 if you do not need them) 
this.element.makePositioned();
this.originalLeft = parseFloat(this.element.getStyle('left') || '0');
this.originalTop	= parseFloat(this.element.getStyle('top')	|| '0');
if(this.options.mode == 'absolute') {
 // absolute movement, so we need to calc deltaX and deltaY
 this.options.x = this.options.x - this.originalLeft;
 this.options.y = this.options.y - this.originalTop;
}
},
update: function(position) {
this.element.setStyle({
 left: Math.round(this.options.x	* position + this.originalLeft) + 'px',
 top:	Math.round(this.options.y	* position + this.originalTop)	+ 'px'
});
}
});

// for backwards compatibility
Effect.MoveBy = function(element, toTop, toLeft) {
return new Effect.Move(element, 
Object.extend({ x: toLeft, y: toTop }, arguments[3] || {}));
};

Effect.Scale = Class.create();
Object.extend(Object.extend(Effect.Scale.prototype, Effect.Base.prototype), {
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 = Math.round(width) + 'px';
if(this.options.scaleY) d.height = Math.round(height) + '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();
Object.extend(Object.extend(Effect.Highlight.prototype, Effect.Base.prototype), {
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+(Math.round(this._base[i]+(this._delta[i]*position)).toColorPart()); }.bind(this)) });
},
finish: function() {
this.element.setStyle(Object.extend(this.oldStyle, {
 backgroundColor: this.options.restorecolor
}));
}
});

Effect.ScrollTo = Class.create();
Object.extend(Object.extend(Effect.ScrollTo.prototype, Effect.Base.prototype), {
initialize: function(element) {
this.element = $(element);
this.start(arguments[1] || {});
},
setup: function() {
Position.prepare();
var offsets = Position.cumulativeOffset(this.element);
if(this.options.offset) offsets[1] += this.options.offset;
var max = window.innerHeight ? 
 window.height - window.innerHeight :
 document.body.scrollHeight - 
	 (document.documentElement.clientHeight ? 
		 document.documentElement.clientHeight : document.body.clientHeight);
this.scrollStart = Position.deltaY;
this.delta = (offsets[1] > max ? max : offsets[1]) - this.scrollStart;
},
update: function(position) {
Position.prepare();
window.scrollTo(Position.deltaX, 
 this.scrollStart + (position*this.delta));
}
});

/* ------------- 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 oldStyle = {
top: element.getStyle('top'),
left: element.getStyle('left') };
return new Effect.Move(element, 
 { x:	20, y: 0, duration: 0.05, afterFinishInternal: function(effect) {
new Effect.Move(effect.element,
 { x: -40, y: 0, duration: 0.1,	afterFinishInternal: function(effect) {
new Effect.Move(effect.element,
 { x:	40, y: 0, duration: 0.1,	afterFinishInternal: function(effect) {
new Effect.Move(effect.element,
 { x: -40, y: 0, duration: 0.1,	afterFinishInternal: function(effect) {
new Effect.Move(effect.element,
 { x:	40, y: 0, duration: 0.1,	afterFinishInternal: function(effect) {
new Effect.Move(effect.element,
 { x: -20, y: 0, duration: 0.05, afterFinishInternal: function(effect) {
	 effect.element.undoPositioned().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');
return new Effect.Scale(element, window.opera ? 0 : 1,
Object.extend({ scaleContent: false, 
scaleX: false, 
scaleMode: 'box',
scaleFrom: 100,
restoreAfterFinish: true,
beforeStartInternal: 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().setStyle({bottom: oldInnerBottom});
 effect.element.down().undoPositioned();
}
}, 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] || {};
var oldOpacity = element.getInlineOpacity();
var transition = options.transition || Effect.Transitions.sinoidal;
var reverser	 = function(pos){ return transition(1-Effect.Transitions.pulse(pos, options.pulses)) };
reverser.bind(transition);
return new Effect.Opacity(element, 
Object.extend(Object.extend({	duration: 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();
Object.extend(Object.extend(Effect.Morph.prototype, Effect.Base.prototype), {
initialize: function(element) {
this.element = $(element);
if(!this.element) throw(Effect._elementDoesNotExistError);
var options = Object.extend({
 style: {}
}, arguments[1] || {});
if (typeof options.style == 'string') {
 if(options.style.indexOf(':') == -1) {
	 var cssText = '', selector = '.' + options.style;
	 $A(document.styleSheets).reverse().each(function(styleSheet) {
		 if (styleSheet.cssRules) cssRules = styleSheet.cssRules;
		 else if (styleSheet.rules) cssRules = styleSheet.rules;
		 $A(cssRules).reverse().each(function(rule) {
			 if (selector == rule.selectorText) {
				 cssText = rule.style.cssText;
				 throw $break;
			 }
		 });
		 if (cssText) throw $break;
	 });
	 this.style = cssText.parseStyle();
	 options.afterFinishInternal = function(effect){
		 effect.element.addClassName(effect.options.style);
		 effect.transforms.each(function(transform) {
			 if(transform.style != 'opacity')
				 effect.element.style[transform.style.camelize()] = '';
		 });
	 }
 } else this.style = options.style.parseStyle();
} else this.style = $H(options.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].underscore().dasherize(), value = pair[1], unit = null;

 if(value.parseColor('#zzzzzz') != '#zzzzzz') {
	 value = value.parseColor();
	 unit	= 'color';
 } else if(property == 'opacity') {
	 value = parseFloat(value);
	 if(/MSIE/.test(navigator.userAgent) && !window.opera && (!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 $H({ 
	 style: property, 
	 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 = $H(), value = null;
this.transforms.each(function(transform){
 value = transform.unit=='color' ?
	 $R(0,2).inject('#',function(m,v,i){
		 return m+(Math.round(transform.originalValue[i]+
			 (transform.targetValue[i] - transform.originalValue[i])*position)).toColorPart() }) : 
	 transform.originalValue + Math.round(
		 ((transform.targetValue - transform.originalValue) * position) * 1000)/1000 + transform.unit;
 style[transform.style] = value;
});
this.element.setStyle(style);
}
});

Effect.Transform = Class.create();
Object.extend(Effect.Transform.prototype, {
initialize: function(tracks){
this.tracks	= [];
this.options = arguments[1] || {};
this.addTracks(tracks);
},
addTracks: function(tracks){
tracks.each(function(track){
 var data = $H(track).values().first();
 this.tracks.push($H({
	 ids:		 $H(track).keys().first(),
	 effect:	Effect.Morph,
	 options: { style: data }
 }));
}.bind(this));
return this;
},
play: function(){
return new Effect.Parallel(
 this.tracks.map(function(track){
	 var elements = [$(track.ids) || $$(track.ids)].flatten();
	 return elements.map(function(e){ return new track.effect(e, Object.extend({ sync:true }, track.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.prototype.parseStyle = function(){
var element = Element.extend(document.createElement('div'));
element.innerHTML = '<div style="' + this + '"></div>';
var style = element.down().style, styleRules = $H();

Element.CSS_PROPERTIES.each(function(property){
if(style[property]) styleRules[property] = style[property]; 
});
if(/MSIE/.test(navigator.userAgent) && !window.opera && this.indexOf('opacity') > -1) {
styleRules.opacity = this.match(/opacity:\s*((?:0|1)?(?:\.\d*)?)/)[1];
}
return styleRules;
};

Element.morph = function(element, style) {
new Effect.Morph(element, Object.extend({ style: style }, arguments[2] || {}));
return element;
};

['setOpacity','getOpacity','getInlineOpacity','forceRerendering','setContentZoom',
'collectTextNodes','collectTextNodesIgnoreClass','morph'].each( 
function(f) { Element.Methods[f] = Element[f]; }
);

Element.Methods.visualEffect = function(element, effect, options) {
s = effect.gsub(/_/, '-').camelize();
effect_class = s.charAt(0).toUpperCase() + s.substring(1);
new Effect[effect_class](element, options);
return $(element);
};

Element.addMethods();