userAgent = window.navigator.userAgent;
browserVers = parseInt(userAgent.charAt(userAgent.indexOf("/")+1),10);
function newImage(arg) {
	if (document.images) {
		rslt = new Image();
		rslt.src = arg;
		return rslt;
	}
}

function findElement(n,ly) {
	if (browserVers < 4)		return document[n];
	var curDoc = ly ? ly.document : document;
	var elem = curDoc[n];
	if (!elem) {
		for (var i=0;i<curDoc.layers.length;i++) {
			elem = findElement(n,curDoc.layers[i]);
			if (elem) return elem;
		}
	}
	return elem;
}

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

var preloadFlag = false;
function preloadImages() {
	if (document.images) {
		logo_evening_over = newImage("images/body/logo_evening-over.jpg");
		picture_donate_button_over = newImage("images/body/picture_donate_small-over_v2.jpg");
		logo_bloorview_over = newImage("images/body/logo_bloorview-over.jpg");
		about_button_over = newImage("images/body/about_button-over.jpg");
		no_limits_button_over = newImage("images/body/no_limits_button-over.jpg");
		stories_button_over = newImage("images/body/stories_button-over.jpg");
		recipe_club_bt_over = newImage("images/body/recipe_club_bt-over.jpg");
		did_you_know_bt_over = newImage("images/body/did_you_know_bt-over.jpg");
		twitter_bt_over = newImage("images/body/twitter_bt-over.jpg");
		facebook_bt_over = newImage("images/body/facebook_bt-over.jpg");
		logo_cisco_over = newImage("images/body/logo_cisco-over.jpg");
		logo_rogers_over = newImage("images/body/logo_rogers-over.jpg");
		logo_scotiabank_over = newImage("images/body/logo_scotiabank-over.jpg");
		link_gala_dinner_over = newImage("images/body/link_gala_dinner-over.jpg");
		link_sponsors_over = newImage("images/body/link_sponsors-over.jpg");
		link_gallery_over = newImage("images/body/link_gallery-over.jpg");
		link_contact_over = newImage("images/body/link_contact-over.jpg");
		preloadFlag = true;
	}
}