// Check if Netscape 4 to handle resize bug
var isNS4 = (navigator.appName == "Netscape" && parseInt(navigator.appVersion) < 5);

// Preload Intranet, Mailto: and Webmail rollovers
if (document.images) {
intra1 = new Image
intra2 = new Image
intra1.src="http://www.elthamhs.vic.edu.au/images/intra.gif"
intra2.src="http://www.elthamhs.vic.edu.au/images/intra-over.gif"

webmail1 = new Image
webmail2 = new Image
webmail1.src="http://www.elthamhs.vic.edu.au/images/webmail.gif"
webmail2.src="http://www.elthamhs.vic.edu.au/images/webmail-over.gif"

emaillink1 = new Image
emaillink2 = new Image
emaillink1.src="http://www.elthamhs.vic.edu.au/images/emaillink.gif"
emaillink2.src="http://www.elthamhs.vic.edu.au/images/emaillink-over.gif"

home1 = new Image
home2 = new Image
home1.src="http://www.elthamhs.vic.edu.au/images/EHSHome.gif"
home2.src="http://www.elthamhs.vic.edu.au/images/EHSHome-over.gif"
}

// ImageReady rollover functions for menu bar
function newImage(arg) {
	if (document.images) {
		rslt = new Image();
		rslt.src = arg;
		return rslt;
	}
}

function changeImages() {
	if (document.images && (preloadFlag == true)) {
		for (var i=0; i<changeImages.arguments.length; i+=2) {
			document[changeImages.arguments[i]].src = changeImages.arguments[i+1];
		}
	}
}

var preloadFlag = false;
function preloadImages() {
	if (document.images) {
		home_over = newImage("images/home-over.gif");
		principal_over = newImage("images/principal-over.gif");
		handbooks_over = newImage("images/handbooks-over.gif");
		newsletters_over = newImage("images/newsletters-over.gif");
		events_over = newImage("images/events-over.gif");
		gallery_over = newImage("images/gallery-over.gif");
		music_over = newImage("images/music-over.gif");
		exstudents_over = newImage("images/exstudents-over.gif");
		preloadFlag = true;
	}
}

// Routine to handle Netscape 4 Browser Resize bug
window.onresize = resizeHandler;

var popOldWidth = window.innerWidth;
function resizeHandler() {
 
if (isNS4 && popOldWidth != window.innerWidth) location.reload()
}