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

var initRollovers = window.onload;
window.onload = function(){
	if (!document.getElementById) return
	
	var aPreLoad = new Array();
	var sTempSrc;

  var setup = function(aImages) {
		for (var i = 0; i < aImages.length; i++) {
			if (aImages[i].className == 'imgover') {
				var src = aImages[i].getAttribute('src');
				var ftype = src.substring(src.lastIndexOf('.'), src.length);
				var hsrc = src.replace(ftype, '_on'+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('_on'+ftype, ftype);
					this.setAttribute('src', sTempSrc);
				}
			}
		}
	};

	var aImages = document.getElementsByTagName('img');
	setup(aImages);
	var aInputs = document.getElementsByTagName('input');
	setup(aInputs);

	if(initRollovers) {
		initRollovers();
	}
}