/*
	standards compliant rollover script
	author : daniel nolan
	http://www.bleedingego.co.uk/webdev.php
*/

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 == 'imgover') {
			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);
			}
		}
	}
}

try{
	window.addeventlistener("load",initrollovers,false);
}catch(e){
	window.attachevent("onload",initrollovers);
}