// preload the main tab images
home = new Image();
home.src = "images/banner.home.on.gif";
catalogue = new Image();
catalogue.src = "images/banner.catalogue.on.gif";
promotions = new Image();
promotions.src = "images/banner.promotions.on.gif";
framing = new Image();
framing.src = "images/banner.framing.on.gif";
orders = new Image();
orders.src = "images/banner.orders.on.gif";
aboutus = new Image();
aboutus.src = "images/banner.aboutus.on.gif";