/*
	Standards Compliant Rollover Script
	Author : Daniel Nolan
	http://www.bleedingego.co.uk/webdev.php
	Functionality Extended by: Graham Milton & Paul Gibson & Eric Orton (check if this is an _over image already)
	http://www.areeba.com.au
*/

function initRollovers() {
	
	if (!document.getElementById) return
	
	var aPreLoad = new Array();
	var sTempSrc;
	var aImages = document.getElementsByTagName('img');

	//getting section id (first directory of pathname)
	var tp = document.location.pathname;
	var sFolder = tp.substring(1,tp.indexOf('/',2));
	
	for (var i = 0; i < aImages.length; i++) {		
		if ((aImages[i].className == 'imgover') && (aImages[i].getAttribute('src').indexOf('_over') == -1)) {
			var src = aImages[i].getAttribute('src');
			var ftype = src.substring(src.lastIndexOf('.'), src.length);
			var hsrc = (src.indexOf('_on.') == -1) ? src.replace(ftype, '_over'+ftype) : src.replace('_on' + ftype, '_over'+ftype);

			aImages[i].setAttribute('hsrc', hsrc);
						
			aPreLoad[i] = new Image();
			aPreLoad[i].src = hsrc;
			
			//getting button id
			var sButtonID = src.substring( src.lastIndexOf('/')+5, src.lastIndexOf('.') );
			
			if ( sFolder == sButtonID ) {
				sTempSrc = aImages[i].getAttribute('src');
				aImages[i].setAttribute('src', aImages[i].getAttribute('hsrc'));
			} else {
				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('_over'+ftype, ftype);
					this.setAttribute('src', sTempSrc);
				}
			}
		}
	}
}

arb.event.addHandler(window, 'load', initRollovers);