window.addEvent('domready', function(){
			var list = $$('#middle-left-nav li a');
			list.each(function(element) {
				
				var fx = new Fx.Styles(element, {duration:100, wait:false});
				
				element.addEvent('mouseenter', function(){
					fx.start({
						'margin-left': '15px'
					});
				});
				
				element.addEvent('mouseleave', function(){
					fx.start({
						'margin-left': 0
					});
				});
				
			});
		});