/********************
 *
 * Librairie Fancy Menu
 *
 * Description:
 *   Création du barre animée sous
 *   sous les titres du menu
 *
 **********************/


	var SlideList = new Class ({
										
		initialize: function(menu, options) {
			this.setOptions(this.getOptions(), options);
			
			this.menu = $(menu), this.current = this.menu.getElement('.current');
			
			this.menu.getElements('li').each(function(item){
				item.addEvent('mouseover', function(){ this.moveBg(item); }.bind(this));
				item.addEvent('mouseout', function(){ this.moveBg(this.current); }.bind(this));
				item.addEvent('click', function(event){ this.clickItem(event, item); }.bind(this));
			}.bind(this));
					
			this.back = new Element('li').addClass('background').adopt(new Element('div').addClass('left')).injectInside(this.menu);
			this.back.fx = this.back.effects(this.options);
			if(this.current) this.setCurrent(this.current);
		},
		
		setCurrent: function(el, effect){
			this.back.setStyles({left: (el.offsetLeft)+'px', width: (el.offsetWidth)+'px'});
			(effect) ? this.back.effect('opacity').set(0).start(1) : this.back.setOpacity(1);
			this.current = el;
		},
		
		getOptions: function(){
			return {
				transition: Fx.Transitions.sineInOut,
				duration: 600, wait: false,
				onClick: Class.empty
			};
		},
	
		clickItem: function(event, item) {
			if(!this.current) this.setCurrent(item, true);
			this.current = item;
			this.options.onClick(new Event(event), item);
		},
	
		moveBg: function(to) {
			if(!this.current) return;
			this.back.fx.custom({
				left: [this.back.offsetLeft, to.offsetLeft],
				width: [this.back.offsetWidth, to.offsetWidth]
			});
		}
	});
	
	SlideList.implement(new Options);