/*
	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 aPreLoadT = new Array();
	var sTempSrc, sTempTSrc;
	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);
			var htsrc = src.replace(ftype, '_ot'+ftype);

			aImages[i].setAttribute('hsrc', hsrc);
			aImages[i].setAttribute('htsrc', htsrc);
			
			aPreLoad[i] = new Image();
			aPreLoad[i].src = hsrc;
			aPreLoadT[i] = new Image();
			aPreLoadT[i].src = htsrc;
			
			aImages[i].onmouseover = function() {
				sTempSrc = this.getAttribute('src');
				this.setAttribute('src', this.getAttribute('hsrc'));
                var topimg = document.getElementById('branding').getElementsByTagName('img')[0];
                sTempTSrc = topimg.getAttribute('src');
                topimg.setAttribute('src', this.getAttribute('htsrc'));
			}	
			
			aImages[i].onmouseout = function() {
				if (!sTempSrc) sTempSrc = this.getAttribute('src').replace('_o'+ftype, ftype);
				this.setAttribute('src', sTempSrc);
                var topimg = document.getElementById('branding').getElementsByTagName('img')[0];
                topimg.setAttribute('src', sTempTSrc);
			}
		}
	}
}

window.onload = initRollovers;