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

	Modified by Mike Brittain (EmbiMEDIA, LLC, www.embimedia.com)
	for use on the Souvenirs, Gifts and Novelties Magazine web 
	site (sgn-magazine.com).
	
	Usage:
	All image with rollover effects tags must include: 
		class="imgover"
	
	Over-state images should be stored in a sub-directory 
	referred to by the value of "onDir", while off-state 
	images should be stored in a directory referred to by 
	the value of "offDir".	
*/

var offDir = 'nav-off';
var onDir = 'nav-on';

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 hsrc = src.replace(offDir, onDir);

			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) this.setAttribute('src', sTempSrc);
			}
		}
	}
}

window.onload = initRollovers;