// Copyright (c) 2005 Thomas Fuchs (http://script.aculo.us, http://mir.aculo.us)
// Contributors:
//  Justin Palmer (http://encytemedia.com/)
//  Mark Pilgrim (http://diveintomark.org/)
//  Martin Bialasinki
// 
// See scriptaculous.js for full license.  

/* ------------- element ext -------------- */

// 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.collectTextNodes(node) : ''));
	}).flatten().join('');
}

Element.setStyle = function(element, style)
{
	element = $(element);
	for (k in style) element.style[k.camelize()] = style[k];
}

Element.setContentZoom = function(element, percent)
{
	Element.setStyle(element, { fontSize: (percent / 100) + 'em' });
	if (navigator.appVersion.indexOf('AppleWebKit') > 0) window.scrollBy(0, 0);
}

Element.getOpacity = function(element)
{
	var opacity;
	if (opacity = Element.getStyle(element, 'opacity'))
		return parseFloat(opacity);
	if (opacity = (Element.getStyle(element, 'filter') || '').match(/alpha\(opacity=(.*)\)/))
		if (opacity[1]) return parseFloat(opacity[1]) / 100;
	return 1.0;
}

Element.setOpacity = function(element, value)
{
	element = $(element);
	if (value == 1)
	{
		Element.setStyle(element, { opacity:
		(/Gecko/.test(navigator.userAgent) && !/Konqueror|Safari|KHTML/.test(navigator.userAgent)) ?
		0.999999 : null
		});
		if (/MSIE/.test(navigator.userAgent))
			Element.setStyle(element, { filter: Element.getStyle(element, 'filter').replace(/alpha\([^\)]*\)/gi, '') });
	} else
	{
		if (value < 0.00001) value = 0;
		Element.setStyle(element, { opacity: value });
		if (/MSIE/.test(navigator.userAgent))
			Element.setStyle(element,
			{ filter: Element.getStyle(element, 'filter').replace(/alpha\([^\)]*\)/gi, '') +
			'alpha(opacity=' + value * 100 + ')'
		});
	}
}

Element.getInlineOpacity = function(element)
{
	return $(element).style.opacity || '';
}

Element.childrenWithClassName = function(element, className)
{
	return $A($(element).getElementsByTagName('*')).select(
	function(c) { return Element.hasClassName(c, className) });
}

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

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

var Effect = {
	tagifyText: function(element)
	{
		var tagifyStyle = 'position:relative';
		if (/MSIE/.test(navigator.userAgent)) tagifyStyle += ';zoom:1';
		element = $(element);
		$A(element.childNodes).each(function(child)
		{
			if (child.nodeType == 3)
			{
				child.nodeValue.toArray().each(function(character)
				{
					element.insertBefore(
            Builder.node('span', { style: tagifyStyle },
              character == ' ' ? String.fromCharCode(160) : character),
              child);
				});
				Element.remove(child);
			}
		});
	},
	multiple: function(element, effect)
	{
		var elements;
		if (((typeof element == 'object') ||
        (typeof element == 'function')) &&
       (element.length))
			elements = element;
		else
			elements = $(element).childNodes;

		var options = Object.extend({
			speed: 0.1,
			delay: 0.0
		}, arguments[2] || {});
		var masterDelay = options.delay;

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

var Effect2 = Effect; // deprecated

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

Effect.Transitions = {}

Effect.Transitions.linear = function(pos)
{
	return pos;
}
Effect.Transitions.sinoidal = function(pos)
{
	return (-Math.cos(pos * Math.PI) / 2) + 0.5;
}
Effect.Transitions.reverse = function(pos)
{
	return 1 - pos;
}
Effect.Transitions.flicker = function(pos)
{
	return ((-Math.cos(pos * Math.PI) / 4) + 0.75) + Math.random() / 4;
}
Effect.Transitions.wobble = function(pos)
{
	return (-Math.cos(pos * Math.PI * (9 * pos)) / 2) + 0.5;
}
Effect.Transitions.pulse = function(pos)
{
	return (Math.floor(pos * 10) % 2 == 0 ?
    (pos * 10 - Math.floor(pos * 10)) : 1 - (pos * 10 - Math.floor(pos * 10)));
}
Effect.Transitions.none = function(pos)
{
	return 0;
}
Effect.Transitions.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 'end':
				// start effect after last queued effect has finished
				timestamp = this.effects.pluck('finishOn').max() || timestamp;
				break;
		}

		effect.startOn += timestamp;
		effect.finishOn += timestamp;
		this.effects.push(effect);
		if (!this.interval)
			this.interval = setInterval(this.loop.bind(this), 40);
	},
	remove: function(effect)
	{
		this.effects = this.effects.reject(function(e) { return e == effect });
		if (this.effects.length == 0)
		{
			clearInterval(this.interval);
			this.interval = null;
		}
	},
	loop: function()
	{
		var timePos = new Date().getTime();
		this.effects.invoke('loop', timePos);
	}
});

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

		if (!this.instances[queueName])
			this.instances[queueName] = new Effect.ScopedQueue();

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

Effect.DefaultOptions = {
	transition: Effect.Transitions.sinoidal,
	duration: 1.0,   // seconds
	fps: 25.0,  // max. 25fps due to Effect.Queue implementation
	sync: false, // true for combining
	from: 0.0,
	to: 1.0,
	delay: 0.0,
	queue: 'parallel'
}

Effect.Base = function() { };
Effect.Base.prototype = {
	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()
	{
		return '#<Effect:' + $H(this).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.Opacity = Class.create();
Object.extend(Object.extend(Effect.Opacity.prototype, Effect.Base.prototype), {
	initialize: function(element)
	{
		this.element = $(element);
		// make this work on IE on elements without 'layout'
		if (/MSIE/.test(navigator.userAgent) && (!this.element.hasLayout))
			Element.setStyle(this.element, { zoom: 1 });
		var options = Object.extend({
			from: Element.getOpacity(this.element) || 0.0,
			to: 1.0
		}, arguments[1] || {});
		this.start(options);
	},
	update: function(position)
	{
		Element.setOpacity(this.element, position);
	}
});

Effect.Move = Class.create();
Object.extend(Object.extend(Effect.Move.prototype, Effect.Base.prototype), {
	initialize: function(element)
	{
		this.element = $(element);
		var options = Object.extend({
			x: 0,
			y: 0,
			mode: 'relative'
		}, arguments[1] || {});
		this.start(options);
	},
	setup: function()
	{
		// Bug in Opera: Opera returns the "real" position of a static element or
		// relative element that does not have top/left explicitly set.
		// ==> Always set top and left for position relative elements in your stylesheets 
		// (to 0 if you do not need them) 
		Element.makePositioned(this.element);
		this.originalLeft = parseFloat(Element.getStyle(this.element, 'left') || '0');
		this.originalTop = parseFloat(Element.getStyle(this.element, '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)
	{
		Element.setStyle(this.element, {
			left: this.options.x * position + this.originalLeft + 'px',
			top: this.options.y * position + this.originalTop + 'px'
		});
	}
});

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

Effect.Scale = Class.create();
Object.extend(Object.extend(Effect.Scale.prototype, Effect.Base.prototype), {
	initialize: function(element, percent)
	{
		this.element = $(element)
		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 = Element.getStyle(this.element, '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 = Element.getStyle(this.element, 'font-size') || '100%';
		['em', 'px', '%'].each(function(fontSizeType)
		{
			if (fontSize.indexOf(fontSizeType) > 0)
			{
				this.fontSize = parseFloat(fontSize);
				this.fontSizeType = fontSizeType;
			}
		} .bind(this));

		this.factor = (this.options.scaleTo - this.options.scaleFrom) / 100;

		this.dims = null;
		if (this.options.scaleMode == 'box')
			this.dims = [this.element.offsetHeight, this.element.offsetWidth];
		if (/^content/.test(this.options.scaleMode))
			this.dims = [this.element.scrollHeight, this.element.scrollWidth];
		if (!this.dims)
			this.dims = [this.options.scaleMode.originalHeight,
                   this.options.scaleMode.originalWidth];
	},
	update: function(position)
	{
		var currentScale = (this.options.scaleFrom / 100.0) + (this.factor * position);
		if (this.options.scaleContent && this.fontSize)
			Element.setStyle(this.element, { fontSize: this.fontSize * currentScale + this.fontSizeType });
		this.setDimensions(this.dims[0] * currentScale, this.dims[1] * currentScale);
	},
	finish: function(position)
	{
		if (this.restoreAfterFinish) Element.setStyle(this.element, this.originalStyle);
	},
	setDimensions: function(height, width)
	{
		var d = {};
		if (this.options.scaleX) d.width = width + 'px';
		if (this.options.scaleY) d.height = height + 'px';
		if (this.options.scaleFromCenter)
		{
			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';
			}
		}
		Element.setStyle(this.element, d);
	}
});

Effect.Highlight = Class.create();
Object.extend(Object.extend(Effect.Highlight.prototype, Effect.Base.prototype), {
	initialize: function(element)
	{
		this.element = $(element);
		var options = Object.extend({ startcolor: '#ffff99' }, arguments[1] || {});
		this.start(options);
	},
	setup: function()
	{
		// Prevent executing on elements not in the layout flow
		if (Element.getStyle(this.element, 'display') == 'none') { this.cancel(); return; }
		// Disable background image during the effect
		this.oldStyle = {
			backgroundImage: Element.getStyle(this.element, 'background-image')
		};
		Element.setStyle(this.element, { backgroundImage: 'none' });
		if (!this.options.endcolor)
			this.options.endcolor = Element.getStyle(this.element, 'background-color').parseColor('#ffffff');
		if (!this.options.restorecolor)
			this.options.restorecolor = Element.getStyle(this.element, '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)
	{
		Element.setStyle(this.element, { 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()
	{
		Element.setStyle(this.element, 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)
{
	var oldOpacity = Element.getInlineOpacity(element);
	var options = Object.extend({
		from: Element.getOpacity(element) || 1.0,
		to: 0.0,
		afterFinishInternal: function(effect)
		{
			with (Element)
			{
				if (effect.options.to != 0) return;
				hide(effect.element);
				setStyle(effect.element, { opacity: oldOpacity });
			} 
		}
	}, arguments[1] || {});
	return new Effect.Opacity(element, options);
}

Effect.Appear = function(element)
{
	var options = Object.extend({
		from: (Element.getStyle(element, 'display') == 'none' ? 0.0 : Element.getOpacity(element) || 0.0),
		to: 1.0,
		beforeSetup: function(effect)
		{
			with (Element)
			{
				setOpacity(effect.element, effect.options.from);
				show(effect.element);
			} 
		}
	}, arguments[1] || {});
	return new Effect.Opacity(element, options);
}

Effect.Puff = function(element)
{
	element = $(element);
	var oldStyle = { opacity: Element.getInlineOpacity(element), position: Element.getStyle(element, 'position') };
	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)
     	{
     		with (Element)
     		{
     			setStyle(effect.effects[0].element, { position: 'absolute' });
     		} 
     	},
     	afterFinishInternal: function(effect)
     	{
     		with (Element)
     		{
     			hide(effect.effects[0].element);
     			setStyle(effect.effects[0].element, oldStyle);
     		} 
     	}
     }, arguments[1] || {})
   );
}

Effect.BlindUp = function(element)
{
	element = $(element);
	Element.makeClipping(element);
	return new Effect.Scale(element, 0,
    Object.extend({ scaleContent: false,
    	scaleX: false,
    	restoreAfterFinish: true,
    	afterFinishInternal: function(effect)
    	{
    		with (Element)
    		{
    			[hide, undoClipping].call(effect.element);
    		} 
    	}
    }, arguments[1] || {})
  );
}

Effect.BlindDown = function(element)
{
	element = $(element);
	var oldHeight = Element.getStyle(element, 'height');
	var elementDimensions = Element.getDimensions(element);
	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)
    	{
    		with (Element)
    		{
    			makeClipping(effect.element);
    			setStyle(effect.element, { height: '0px' });
    			show(effect.element);
    		} 
    	},
    	afterFinishInternal: function(effect)
    	{
    		with (Element)
    		{
    			undoClipping(effect.element);
    			setStyle(effect.element, { height: oldHeight });
    		} 
    	}
    }, arguments[1] || {})
  );
}

Effect.SwitchOff = function(element)
{
	element = $(element);
	var oldOpacity = Element.getInlineOpacity(element);
	return new Effect.Appear(element, {
		duration: 0.4,
		from: 0,
		transition: Effect.Transitions.flicker,
		afterFinishInternal: function(effect)
		{
			new Effect.Scale(effect.element, 1, {
				duration: 0.3, scaleFromCenter: true,
				scaleX: false, scaleContent: false, restoreAfterFinish: true,
				beforeSetup: function(effect)
				{
					with (Element)
					{
						[makePositioned, makeClipping].call(effect.element);
					} 
				},
				afterFinishInternal: function(effect)
				{
					with (Element)
					{
						[hide, undoClipping, undoPositioned].call(effect.element);
						setStyle(effect.element, { opacity: oldOpacity });
					} 
				}
			})
		}
	});
}

Effect.DropOut = function(element)
{
	element = $(element);
	var oldStyle = {
		top: Element.getStyle(element, 'top'),
		left: Element.getStyle(element, 'left'),
		opacity: Element.getInlineOpacity(element)
	};
	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)
      	{
      		with (Element)
      		{
      			makePositioned(effect.effects[0].element);
      		} 
      	},
      	afterFinishInternal: function(effect)
      	{
      		with (Element)
      		{
      			[hide, undoPositioned].call(effect.effects[0].element);
      			setStyle(effect.effects[0].element, oldStyle);
      		} 
      	}
      }, arguments[1] || {}));
}

Effect.Shake = function(element)
{
	element = $(element);
	var oldStyle = {
		top: Element.getStyle(element, 'top'),
		left: Element.getStyle(element, '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)
	    {
	    	with (Element)
	    	{
	    		undoPositioned(effect.element);
	    		setStyle(effect.element, oldStyle);
	    	} 
	    } 
	    })
	    } 
	    })
	    } 
	    })
	    } 
	    })
	    } 
	    })
	    } 
	    });
}

Effect.SlideDown = function(element)
{
	element = $(element);
	Element.cleanWhitespace(element);
	// SlideDown need to have the content of the element wrapped in a container element with fixed height!
	var oldInnerBottom = Element.getStyle(element.firstChild, 'bottom');
	var elementDimensions = Element.getDimensions(element);
	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)
		{
			with (Element)
			{
				makePositioned(effect.element);
				makePositioned(effect.element.firstChild);
				if (window.opera) setStyle(effect.element, { top: '' });
				makeClipping(effect.element);
				setStyle(effect.element, { height: '0px' });
				show(element);
			} 
		},
		afterUpdateInternal: function(effect)
		{
			with (Element)
			{
				setStyle(effect.element.firstChild, { bottom:
        (effect.dims[0] - effect.element.clientHeight) + 'px'
				});
			} 
		},
		afterFinishInternal: function(effect)
		{
			with (Element)
			{
				undoClipping(effect.element);
				undoPositioned(effect.element.firstChild);
				undoPositioned(effect.element);
				setStyle(effect.element.firstChild, { bottom: oldInnerBottom });
			} 
		}
	}, arguments[1] || {})
  );
}

Effect.SlideUp = function(element)
{
	element = $(element);
	Element.cleanWhitespace(element);
	var oldInnerBottom = Element.getStyle(element.firstChild, 'bottom');
	return new Effect.Scale(element, 0,
   Object.extend({ scaleContent: false,
   	scaleX: false,
   	scaleMode: 'box',
   	scaleFrom: 100,
   	restoreAfterFinish: true,
   	beforeStartInternal: function(effect)
   	{
   		with (Element)
   		{
   			makePositioned(effect.element);
   			makePositioned(effect.element.firstChild);
   			if (window.opera) setStyle(effect.element, { top: '' });
   			makeClipping(effect.element);
   			show(element);
   		} 
   	},
   	afterUpdateInternal: function(effect)
   	{
   		with (Element)
   		{
   			setStyle(effect.element.firstChild, { bottom:
        (effect.dims[0] - effect.element.clientHeight) + 'px'
   			});
   		} 
   	},
   	afterFinishInternal: function(effect)
   	{
   		with (Element)
   		{
   			[hide, undoClipping].call(effect.element);
   			undoPositioned(effect.element.firstChild);
   			undoPositioned(effect.element);
   			setStyle(effect.element.firstChild, { 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)
    	{
    		with (Element)
    		{
    			makeClipping(effect.element);
    		} 
    	},
    	afterFinishInternal: function(effect)
    	{
    		with (Element)
    		{
    			hide(effect.element);
    			undoClipping(effect.element);
    		} 
    	}
    });
}

Effect.Grow = function(element)
{
	element = $(element);
	var options = Object.extend({
		direction: 'center',
		moveTransistion: 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(element)
	};

	var dims = Element.getDimensions(element);
	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)
		{
			with (Element)
			{
				hide(effect.element);
				makeClipping(effect.element);
				makePositioned(effect.element);
			} 
		},
		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)
        	{
        		with (Element)
        		{
        			setStyle(effect.effects[0].element, { height: '0px' });
        			show(effect.effects[0].element);
        		} 
        	},
        	afterFinishInternal: function(effect)
        	{
        		with (Element)
        		{
        			[undoClipping, undoPositioned].call(effect.effects[0].element);
        			setStyle(effect.effects[0].element, oldStyle);
        		} 
        	}
        }, options)
      )
		}
	});
}

Effect.Shrink = function(element)
{
	element = $(element);
	var options = Object.extend({
		direction: 'center',
		moveTransistion: 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(element)
	};

	var dims = Element.getDimensions(element);
	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)
    	{
    		with (Element)
    		{
    			[makePositioned, makeClipping].call(effect.effects[0].element)
    		} 
    	},
    	afterFinishInternal: function(effect)
    	{
    		with (Element)
    		{
    			[hide, undoClipping, undoPositioned].call(effect.effects[0].element);
    			setStyle(effect.effects[0].element, oldStyle);
    		} 
    	}
    }, options)
  );
}

Effect.Pulsate = function(element)
{
	element = $(element);
	var options = arguments[1] || {};
	var oldOpacity = Element.getInlineOpacity(element);
	var transition = options.transition || Effect.Transitions.sinoidal;
	var reverser = function(pos) { return transition(1 - Effect.Transitions.pulse(pos)) };
	reverser.bind(transition);
	return new Effect.Opacity(element,
    Object.extend(Object.extend({ duration: 3.0, from: 0,
    	afterFinishInternal: function(effect) { Element.setStyle(effect.element, { 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(element);
	return new Effect.Scale(element, 5, Object.extend({
		scaleContent: false,
		scaleX: false,
		afterFinishInternal: function(effect)
		{
			new Effect.Scale(element, 1, {
				scaleContent: false,
				scaleY: false,
				afterFinishInternal: function(effect)
				{
					with (Element)
					{
						[hide, undoClipping].call(effect.element);
						setStyle(effect.element, oldStyle);
					} 
				} 
			});
		} 
	}, arguments[1] || {}));
}