/* --------- Rollover ------------ */

function Rollover() {
if(document.getElementsByTagName) {
var images = document.getElementsByTagName("img");

for(var i=0; i < images.length; i++) {
SetRollover(images[i]);
}
}
}

function SetRollover(rob){
if(rob.getAttribute("src").match("btn01.")){

//onMouseover
rob.onmouseover = function() {
this.src = this.getAttribute("src").replace("btn01.", "btn02.");
}

//onMouseout
rob.onmouseout = function() {
this.src = this.getAttribute("src").replace("btn02.", "btn01.");
}
}
}

if(window.addEventListener) {
window.addEventListener("load", Rollover, false);
}
else if(window.attachEvent) {
window.attachEvent("onload", Rollover);
}

/* --------- /Rollover ------------ */