// JavaScript Document
function SimpleSwap(el,which){ 
el.src=el.getAttribute(which || "origsrc");
} 
function SimpleSwapSetup(){ 
var x = document.getElementsByTagName("img"); 
for (var i=0;i<x.length;i++){ 
var oversrc = x[i].getAttribute("oversrc"); 
if (!oversrc) continue; 
// preload image 
// comment the next two lines to disable image pre-loading 
x[i].oversrc_img = new Image(); 
x[i].oversrc_img.src=oversrc; 
// set event handlers 
x[i].onmouseover = new Function("SimpleSwap(this,'oversrc');"); 
x[i].onmouseout = new Function("SimpleSwap(this);"); 
// save original src 
x[i].setAttribute("origsrc",x[i].src); 
} 
} 
var PreSimpleSwapOnload =(window.onload)? window.onload : function(){}; 
window.onload = function(){PreSimpleSwapOnload(); SimpleSwapSetup();
}