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("assets/Home-over.gif");
		Home_down = newImage("assets/Home-down.gif");
		Contact_Us_over = newImage("assets/Contact-Us-over.gif");
		Contact_Us_down = newImage("assets/Contact-Us-down.gif");
		Cleaning_over = newImage("assets/Cleaning-over.gif");
		Cleaning_down = newImage("assets/Cleaning-down.gif");
		Janitorial_over = newImage("assets/Janitorial-over.gif");
		Janitorial_down = newImage("assets/Janitorial-down.gif");
		Washroom_Solutions_over = newImage("assets/Washroom-Solutions-over.gif");
		Washroom_Solutions_down = newImage("assets/Washroom-Solutions-down.gif");
		Landscaping_over = newImage("assets/Landscaping-over.gif");
		Landscaping_down = newImage("assets/Landscaping-down.gif");
		Security_over = newImage("assets/Security-over.gif");
		Security_down = newImage("assets/Security-down.gif");
		preloadFlag = true;
	}
}