//MooTools More, <http://mootools.net/more>. Copyright (c) 2006-2009 Aaron Newton <http://clientcide.com/>, Valerio Proietti <http://mad4milk.net> & the MooTools team <http://mootools.net/developers>, MIT Style License.

MooTools.More = {
	version : "1.2.3.1"
};
Fx.Scroll = new Class( {
	Extends : Fx,
	options : {
		offset : {
			x : 0,
			y : 0
		},
		wheelStops : true
	},
	initialize : function(b, a) {
		this.element = this.subject = document.id(b);
		this.parent(a);
		var d = this.cancel.bind(this, false);
		if ($type(this.element) != "element") {
			this.element = document.id(this.element.getDocument().body);
		}
		var c = this.element;
		if (this.options.wheelStops) {
			this.addEvent("start", function() {
				c.addEvent("mousewheel", d);
			}, true);
			this.addEvent("complete", function() {
				c.removeEvent("mousewheel", d);
			}, true);
		}
	},
	set : function() {
		var a = Array.flatten(arguments);
		this.element.scrollTo(a[0], a[1]);
	},
	compute : function(c, b, a) {
		return [ 0, 1 ].map(function(d) {
			return Fx.compute(c[d], b[d], a);
		});
	},
	start : function(c, h) {
		if (!this.check(c, h)) {
			return this;
		}
		var e = this.element.getSize(), f = this.element.getScrollSize();
		var b = this.element.getScroll(), d = {
			x : c,
			y : h
		};
		for ( var g in d) {
			var a = f[g] - e[g];
			if ($chk(d[g])) {
				d[g] = ($type(d[g]) == "number") ? d[g].limit(0, a) : a;
			} else {
				d[g] = b[g];
			}
			d[g] += this.options.offset[g];
		}
		return this.parent( [ b.x, b.y ], [ d.x, d.y ]);
	},
	toTop : function() {
		return this.start(false, 0);
	},
	toLeft : function() {
		return this.start(0, false);
	},
	toRight : function() {
		return this.start("right", false);
	},
	toBottom : function() {
		return this.start(false, "bottom");
	},
	toElement : function(b) {
		var a = document.id(b).getPosition(this.element);
		return this.start(a.x, a.y);
	},
	scrollIntoView : function(c, e, d) {
		e = e ? $splat(e) : [ "x", "y" ];
		var h = {};
		c = document.id(c);
		var f = c.getPosition(this.element);
		var i = c.getSize();
		var g = this.element.getScroll();
		var a = this.element.getSize();
		var b = {
			x : f.x + i.x,
			y : f.y + i.y
		};
		[ "x", "y" ].each(function(j) {
			if (e.contains(j)) {
				if (b[j] > g[j] + a[j]) {
					h[j] = b[j] - a[j];
				}
				if (f[j] < g[j]) {
					h[j] = f[j];
				}
			}
			if (h[j] == null) {
				h[j] = g[j];
			}
			if (d && d[j]) {
				h[j] = h[j] + d[j];
			}
		}, this);
		if (h.x != g.x || h.y != g.y) {
			this.start(h.x, h.y);
		}
		return this;
	}
});
var Asset = {
	javascript : function(f, d) {
		d = $extend( {
			onload : $empty,
			document : document,
			check : $lambda(true)
		}, d);
		var b = new Element("script", {
			src : f,
			type : "text/javascript"
		});
		var e = d.onload.bind(b), a = d.check, g = d.document;
		delete d.onload;
		delete d.check;
		delete d.document;
		b.addEvents( {
			load : e,
			readystatechange : function() {
				if ( [ "loaded", "complete" ].contains(this.readyState)) {
					e();
				}
			}
		}).set(d);
		if (Browser.Engine.webkit419) {
			var c = (function() {
				if (!$try(a)) {
					return;
				}
				$clear(c);
				e();
			}).periodical(50);
		}
		return b.inject(g.head);
	},
	css : function(b, a) {
		return new Element("link", $merge( {
			rel : "stylesheet",
			media : "screen",
			type : "text/css",
			href : b
		}, a)).inject(document.head);
	},
	image : function(c, b) {
		b = $merge( {
			onload : $empty,
			onabort : $empty,
			onerror : $empty
		}, b);
		var d = new Image();
		var a = document.id(d) || new Element("img");
		[ "load", "abort", "error" ].each(function(e) {
			var f = "on" + e;
			var g = b[f];
			delete b[f];
			d[f] = function() {
				if (!d) {
					return;
				}
				if (!a.parentNode) {
					a.width = d.width;
					a.height = d.height;
				}
				d = d.onload = d.onabort = d.onerror = null;
				g.delay(1, a, a);
				a.fireEvent(e, a, 1);
			};
		});
		d.src = a.src = c;
		if (d && d.complete) {
			d.onload.delay(1);
		}
		return a.set(b);
	},
	images : function(d, c) {
		c = $merge( {
			onComplete : $empty,
			onProgress : $empty,
			onError : $empty,
			properties : {}
		}, c);
		d = $splat(d);
		var a = [];
		var b = 0;
		return new Elements(d.map(function(e) {
			return Asset.image(e, $extend(c.properties, {
				onload : function() {
					c.onProgress.call(this, b, d.indexOf(e));
					b++;
					if (b == d.length) {
						c.onComplete();
					}
				},
				onerror : function() {
					c.onError.call(this, b, d.indexOf(e));
					b++;
					if (b == d.length) {
						c.onComplete();
					}
				}
			}));
		}));
	}
};
var Scroller = new Class(
		{
			Implements : [ Events, Options ],
			options : {
				area : 20,
				velocity : 1,
				onChange : function(a, b) {
					this.element.scrollTo(a, b);
				},
				fps : 50
			},
			initialize : function(b, a) {
				this.setOptions(a);
				this.element = document.id(b);
				this.listener = ($type(this.element) != "element") ? document
						.id(this.element.getDocument().body) : this.element;
				this.timer = null;
				this.bound = {
					attach : this.attach.bind(this),
					detach : this.detach.bind(this),
					getCoords : this.getCoords.bind(this)
				};
			},
			start : function() {
				this.listener.addEvents( {
					mouseenter : this.bound.attach,
					mouseleave : this.bound.detach
				});
			},
			stop : function() {
				this.listener.removeEvents( {
					mouseenter : this.bound.attach,
					mouseleave : this.bound.detach
				});
				this.timer = $clear(this.timer);
			},
			attach : function() {
				this.listener.addEvent("mousemove", this.bound.getCoords);
			},
			detach : function() {
				this.listener.removeEvent("mousemove", this.bound.getCoords);
				this.timer = $clear(this.timer);
			},
			getCoords : function(a) {
				this.page = (this.listener.get("tag") == "body") ? a.client
						: a.page;
				if (!this.timer) {
					this.timer = this.scroll.periodical(Math
							.round(1000 / this.options.fps), this);
				}
			},
			scroll : function() {
				var b = this.element.getSize(), a = this.element.getScroll(), f = this.element
						.getOffsets(), c = this.element.getScrollSize(), e = {
					x : 0,
					y : 0
				};
				for ( var d in this.page) {
					if (this.page[d] < (this.options.area + f[d]) && a[d] != 0) {
						e[d] = (this.page[d] - this.options.area - f[d])
								* this.options.velocity;
					} else {
						if (this.page[d] + this.options.area > (b[d] + f[d])
								&& a[d] + b[d] != c[d]) {
							e[d] = (this.page[d] - b[d] + this.options.area - f[d])
									* this.options.velocity;
						}
					}
				}
				if (e.y || e.x) {
					this.fireEvent("change", [ a.x + e.x, a.y + e.y ]);
				}
			}
		});