// 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.  

// 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(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, findFirst) {
	return [$A($(element).getElementsByTagName('*'))[findFirst ? 'detect' : 'select'](function(c) {
		return c.className ? Element.hasClassName(c, className) : false;
	})].flatten();
}

Element.forceRerendering = function(element) {
	try {
		element = $(element);
		var n = document.createTextNode(' ');
		element.appendChild(n);
		element.removeChild(n);
	} catch(e) {
	}
};

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

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

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'), limit: 1 }
		}, arguments[2] || {});
		Effect[element.visible() ?
			   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;

		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), 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))
			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);
		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: 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 = 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','%'].each(function(fontSizeType) {
			if (fontSize.indexOf(fontSizeType) > 0) {
				this.fontSize = parseFloat(fontSize);
				this.fontSizeType = fontSizeType;
			}
		}.bind(this));

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

		this.dims = null;
		if (this.options.scaleMode == 'box')
			this.dims = [this.element.offsetHeight, this.element.offsetWidth];
		if (/^content/.test(this.options.scaleMode))
			this.dims = [this.element.scrollHeight, this.element.scrollWidth];
		if (!this.dims)
			this.dims = [this.options.scaleMode.originalHeight,
					this.options.scaleMode.originalWidth];
	},
	update: function(position) {
		var currentScale = (this.options.scaleFrom / 100.0) + (this.factor * position);
		if (this.options.scaleContent && this.fontSize)
			this.element.setStyle({fontSize: this.fontSize * currentScale + this.fontSizeType });
		this.setDimensions(this.dims[0] * currentScale, this.dims[1] * currentScale);
	},
	finish: function(position) {
		if (this.restoreAfterFinish) this.element.setStyle(this.originalStyle);
	},
	setDimensions: function(height, width) {
		var d = {};
		if (this.options.scaleX) d.width = width + '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';
			}
		}
		this.element.setStyle(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 (this.element.getStyle('display') == 'none') {
			this.cancel();
			return;
		}
		// Disable background image during the effect
		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();
			effect.element.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);
			effect.element.show();
		}}, arguments[1] || {});
	return new Effect.Opacity(element, options);
}

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

Effect.SwitchOff = function(element) {
	element = $(element);
	var oldOpacity = element.getInlineOpacity();
	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) {
					effect.element.makePositioned();
					effect.element.makeClipping();
				},
				afterFinishInternal: function(effect) {
					effect.element.hide();
					effect.element.undoClipping();
					effect.element.undoPositioned();
					effect.element.setStyle({opacity: oldOpacity});
				}
			})
		}
	});
}

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();
					effect.effects[0].element.undoPositioned();
					effect.effects[0].element.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();
							effect.element.setStyle(oldStyle);
						}})
					}})
				}})
			}})
		}})
	}});
}

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

Effect.SlideUp = function(element) {
	element = $(element);
	element.cleanWhitespace();
	var oldInnerBottom = $(element.firstChild).getStyle('bottom');
	return new Effect.Scale(element, 0,
			Object.extend({ scaleContent: false,
				scaleX: false,
				scaleMode: 'box',
				scaleFrom: 100,
				restoreAfterFinish: true,
				beforeStartInternal: function(effect) {
					effect.element.makePositioned();
					effect.element.firstChild.makePositioned();
					if (window.opera) effect.element.setStyle({top: ''});
					effect.element.makeClipping();
					effect.element.show();
				},
				afterUpdateInternal: function(effect) {
					effect.element.firstChild.setStyle({bottom:
							(effect.dims[0] - effect.element.clientHeight) + 'px' });
				},
				afterFinishInternal: function(effect) {
					effect.element.hide();
					effect.element.undoClipping();
					effect.element.firstChild.undoPositioned();
					effect.element.undoPositioned();
					effect.element.setStyle({bottom: oldInnerBottom});
				}
			}, arguments[1] || {})
			);
}

// Bug in opera makes the TD containing this element expand for a instance after finish 
Effect.Squish = function(element) {
	return new Effect.Scale(element, window.opera ? 1 : 0,
	{ restoreAfterFinish: true,
		beforeSetup: function(effect) {
			effect.element.makeClipping(effect.element);
		},
		afterFinishInternal: function(effect) {
			effect.element.hide(effect.element);
			effect.element.undoClipping(effect.element);
		}
	});
}

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();
			effect.element.makeClipping();
			effect.element.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'});
					effect.effects[0].element.show();
				},
				afterFinishInternal: function(effect) {
					effect.effects[0].element.undoClipping();
					effect.effects[0].element.undoPositioned();
					effect.effects[0].element.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();
			effect.effects[0].element.makeClipping();
		},
		afterFinishInternal: function(effect) {
			effect.effects[0].element.hide();
			effect.effects[0].element.undoClipping();
			effect.effects[0].element.undoPositioned();
			effect.effects[0].element.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))
	};
	reverser.bind(transition);
	return new Effect.Opacity(element,
			Object.extend(Object.extend({  duration: 3.0, 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(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) {
					effect.element.hide();
					effect.element.undoClipping();
					effect.element.setStyle(oldStyle);
				} });
		}}, arguments[1] || {}));
}

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);
};