$(document).ready(function(){	
	$(".rollover").hover(
		function() {
			curr = $(this).find("img").attr("src");
			overlen = curr.length;
			over = curr.substr(0, overlen-4);
			over = over+'-over.gif';
			$(this).find("img").attr({ src: over});
		},
		function() {
			$(this).find("img").attr({ src: curr});
		}
	)
	
	$(".rollover").click(
		function() {
			curr = $(this).find("img").attr("src");
			overlen = curr.length;
			down = curr.substr(0, overlen-9);
			down = down+'-down.gif';
			$(this).find("img").attr({ src: down});
		},
		function() {
			$(this).find("img").attr({ src: curr});
		}
	)
	
	$(".rollover").find("img").each(function(i) {
		var temp = this.src;
		var prelen = temp.length;
		var pre = temp.substr(0, prelen-4);
		var down = pre + '-down.gif';
		pre = pre + '-over.gif';
		
		preload_image_object = new Image();
		preload_image_object.src = pre;
				
		preload_down_image_object = new Image();
		preload_down_image_object.src = down;
	});
});