/*
Standards Compliant Rollover Script
Author : Daniel Nolan
http://www.bleedingego.co.uk/webdev.php
*/

/* Rollover Menu */

function initRollovers() {
if (!document.getElementById) return

var aPreLoad = new Array();
var sTempSrc;
var aImages = document.getElementsByTagName('img');

for (var i = 0; i < aImages.length; i++) {		
if (aImages[i].className == 'btn') {
	var src = aImages[i].getAttribute('src');
	var ftype = src.substring(src.lastIndexOf('.'), src.length);
	var hsrc = src.replace(ftype, '_o'+ftype);

	aImages[i].setAttribute('hsrc', hsrc);
	
	aPreLoad[i] = new Image();
	aPreLoad[i].src = hsrc;
	
	aImages[i].onmouseover = function() {
		sTempSrc = this.getAttribute('src');
		this.setAttribute('src', this.getAttribute('hsrc'));
	}	
	
	aImages[i].onmouseout = function() {
		if (!sTempSrc) sTempSrc = this.getAttribute('src').replace('_o'+ftype, ftype);
		this.setAttribute('src', sTempSrc);
	}
}
}
}

window.onload = initRollovers;