$(function(){
	$(".rollover").hover(
		function() {
			curr = $(this).find("img").attr("src");
			
			overlen = curr.length;
			dot = curr.lastIndexOf('.');
			ext = curr.substr(dot);
			
			over = curr.substr(0, dot);
			over = over+'_over' + ext;
			
			$(this).find("img").attr({ src: over});
		},
		function() {
			$(this).find("img").attr({ src: curr});
		}
	);
	$(".rollover").find("img").each(
		function(i) {
			temp = this.src;
			prelen = temp.length;
			
			dot = temp.lastIndexOf('.');
			
			pre = temp.substr(0, dot);
			ext = temp.substr(dot);
			
			pre = pre+'_over' + ext;
			
			preload_image_object = new Image();
			preload_image_object.src = pre;
		}
	);
});