// fxRollOver() v1 2006.07.11
// Developed by HTMLfx.com
// URL: http://www.htmlfx.com/code/javascript/
// Required: Must be executed onload to preload images i.e.
// Usage: Add a src2 atrribute to your ![]()
tag i.e. 
function fxRollOver() {
if (!document.getElementById) return
var imgOriginSrc;
var imgTemp = new Array();
var imgarr = document.getElementsByTagName('img');
for (var i = 0; i < imgarr.length; i++) {
if (imgarr[i].getAttribute('src2')) {
imgTemp[i] = new Image();
imgTemp[i].src = imgarr[i].getAttribute('src2');
imgarr[i].onmouseover = function() {
imgOriginSrc = this.getAttribute('src');
this.setAttribute('src',this.getAttribute('src2'));
}
imgarr[i].onmouseout = function() {
if (imgOriginSrc == null){
imgOriginSrc = this.getAttribute('src');
}
this.setAttribute('src',imgOriginSrc);
}
}
}
}