function swap(imageName) {
		parent.document.getElementById('jewelryImage').src = 'images/jewelryImages/' + imageName;
}
function on(imageName) {
	document.getElementById(imageName).src = "images/" + imageName +"On.gif";
	}
function off(imageName) {
	document.getElementById(imageName).src = "images/" + imageName +".gif";
}
function preload() {
	var home = new Image();
	home.src = "images/home.gif";
	var about = new Image();
	about.src = "images/about.gif";
	var jewelry = new Image();
	jewelry.src = "images/jewelry.gif";
	var contact = new Image();
	contact.src = "images/contact.gif";
	var homeOn = new Image();
	homeOn.src = "images/homeOn.gif";
	var aboutOn = new Image();
	aboutOn.src = "images/aboutOn.gif";
	var jewelryOn = new Image();
	jewelryOn.src = "images/jewelryOn.gif";
	var contactOn = new Image();
	contactOn.src = "images/contactOn.gif";
}