/*
*	Credits to: Antonio Lupetti
*/

var Ticker = new Class({
				setOptions: function(options) {
					this.options = Object.extend({
						speed: 1500,
						delay: 5000,
						direction: 'vertical',
						onComplete: Class.empty,
						onStart: Class.empty
					}, options || {});
				},
				initialize: function(el,options){
					this.setOptions(options);
					this.el = $(el);
					this.items = this.el.getElements('li');
					this.timer = null;
					var w = 0;
					var h = 0;
					if(this.options.direction.toLowerCase()=='horizontal') {
						h = this.el.getSize().size.y;
						this.items.each(function(li,index) {
							w += li.getSize().size.x;
						});
					} else {
						w = this.el.getSize().size.x;
						this.items.each(function(li,index) {
							h += li.getSize().size.y;
						});
					}
					this.el.setStyles({
						position: 'absolute',
						top: 0,
						left: 0,
						width: w,
						height: h
					});
					this.fx = new Fx.Styles(this.el,{duration:this.options.speed,onComplete:function() {
						var i = (this.current==0)?this.items.length:this.current;
						this.items[i-1].injectInside(this.el);
						this.el.setStyles({
							left:0,
							top:0
						});
					}.bind(this)});
					this.current = 0;
					this.next();
				},
				pause: function() {
					$clear(this.timer);
					this.timer = null;
				},
				resume: function() {
					if (this.timer == null) this.next();
				},
				next: function() {
					this.current++;
					if (this.current >= this.items.length) this.current = 0;
					var pos = this.items[this.current];
					this.fx.start({
						top: -pos.offsetTop,
						left: -pos.offsetLeft
					});
					this.timer = this.next.bind(this).delay(this.options.delay+this.options.speed);
				}
			});