window.addEvent('domready',function() {
	var navi = $$('#navi a');
	if($chk(navi)) {
		navi.each(function(el) {
			var rel = el.get('rel');
			var img = el.getFirst();
			if($chk(rel) && $chk(img) && img.get('tag') == 'img') {
				//Cachen
				new Asset.image(rel);
				//Original-Bild merken
				var orig = img.src;
				el.addEvents({
					'mouseover': function(e) {
						new Asset.image(rel,{
							'onload': function() {
								img.src = this.src;
							}
						});
					},
					'mouseout': function(e) {
						new Asset.image(orig,{
							'onload': function() {
								img.src = this.src;
							}
						});
					}
				});
			};
		});
	};
});