homeOn = new Image();
homeOn.src = "on/home.gif";

aboutOn = new Image();
aboutOn.src = "on/about.gif";

catalogOn = new Image();
catalogOn.src = "on/catalog.gif";

productsOn = new Image();
productsOn.src = "on/products.gif";

servicesOn = new Image();
servicesOn.src = "on/services.gif";

cartOn = new Image();
cartOn.src = "on/cart.gif";

checkoutOn = new Image();
checkoutOn.src = "on/checkout.gif";

contactOn = new Image();
contactOn.src = "on/contact.gif";

//On = new Image();
//On.src = "on/x.gif";

function imgOn(imgName) {
	document [imgName].src = "on/" + (imgName) + ".gif";
}
function imgOff(imgName) {
	document [imgName].src = "off/" + (imgName) + ".gif";
}