window.addEvent('domready',function(){
				var links = $$('a.nav-item');
				var contents = $$('div.item-content');
			   
				contents.set('slide',{
					duration:450,
					transition:Fx.Transitions.Back.easeIn
				});
			   
				contents.slide('hide');
			 
				links.addEvent('click',function(e){
					e.stop();
					var index = links.indexOf(this);
					if(!contents.some(function(content,i){
						var slide = content.get('slide');
						if(slide.open && i != index){
							slide.slideOut().chain(function(){contents[index].slide('in')});
							return true;
						}
						else if(i != index)
							slide.slideOut();
					})){
						var slide = contents[index].get('slide');
						contents[index].slide((slide.open) ? 'out' : 'in');
					}
				});
			});