/*
	Standards Compliant Rollover Script
	Author : Daniel Nolan
	http://www.bleedingego.co.uk/webdev.php
	Functionality Extended by: Graham Milton & Paul Gibson
	http://www.areeba.com.au
*/
var aPreLoad = new Array();
var ftype;
var bRolloversInitialised = false;

function initRollovers() {

	if (!document.getElementById) return;
	
	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));

	var sOnSrc = '';
	var OnIndex;	

	for (var i = 0; i < aImages.length; i++) {		
		if (aImages[i].className == 'imgover') {
			var src = aImages[i].getAttribute('src');
			ftype = src.substring(src.lastIndexOf('.'), src.length);
			var hsrc = src.replace(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 ) {								
				sOnSrc = aImages[i].getAttribute('hsrc');
				OnIndex = i;
			} else {
			
				aImages[i].onmouseover = function() {
					if(!bRolloversInitialised) return;
					sTempSrc = this.getAttribute('src');
					this.setAttribute('src', this.getAttribute('hsrc'));
				}
				aImages[i].onmouseout = function() {
					if(!bRolloversInitialised) return;
					if (!sTempSrc) sTempSrc = this.getAttribute('src').replace('_over'+ftype, ftype);
					this.setAttribute('src', sTempSrc);
				}
			
			}
			
		}
	}

	
	//set onimage last after initialising rollovers
	if (sOnSrc != '') {
		aImages[OnIndex].setAttribute('src', sOnSrc );
	}
	
	
	bRolloversInitialised = true;
}

window.onload = initRollovers;