$(document).ready(function() {
	var normal = "/images/homepage/";
	var over = "/images/homepage/hover/";
	$("#blocks div img").mouseover(function() {
		oldsrc = $(this).attr("src");
		filename = oldsrc.substring(oldsrc.lastIndexOf("/")+1);
		$(this).attr("src",over+filename);
	}).mouseout(function() {
		oldsrc = $(this).attr("src");
		filename = oldsrc.substring(oldsrc.lastIndexOf("/")+1);
		$(this).attr("src",normal+filename);
	});
});