window.addEvent('domready', function(){
	$('wrapNavigation').getElements('img').each(function(el){
		if(el.getParent('a').hasClass('selected')){
			el.src = el.src.replace('.jpg', '_1.jpg');
			}
		else{
			el.addEvents({'mouseover':function(){
					this.src = this.src.replace('.jpg', '_1.jpg');
				}, 'mouseout':function(){
					this.src = this.src.replace('_1.jpg', '.jpg');
				}});
			}
		});
	});