if (navigator.appVersion.substring(0,1) >= 3) {
        prodon                        = new Image (160,28);
        prodon.src            = "images/products-on.jpg";
        prodoff                      = new Image (160,28);
        prodoff.src          = "images/products-off.jpg";
        
        contacton                        = new Image (160,28);
		contacton.src            = "images/contact-on.jpg";
		contactoff                      = new Image (160,28);
        contactoff.src          = "images/contact-off.jpg";
        
        servon                        = new Image (160,28);
		servon.src            = "images/service-on.jpg";
		servoff                      = new Image (160,28);
        servoff.src          = "images/service-off.jpg";
        
        suppon                        = new Image (160,28);
		suppon.src            = "images/supplies-on.jpg";
		suppoff                      = new Image (160,28);
        suppoff.src          = "images/supplies-off.jpg";
        
        homeon                        = new Image (160,28);
		homeon.src            = "images/home-on.jpg";
		homeoff                      = new Image (160,28);
        homeoff.src          = "images/home-off.jpg";
     
}

function navMouseOver(imgid,imgnew) {
        if (navigator.appVersion.substring(0,1) >= 3) {
                document.images[imgid].src=eval(imgnew + ".src");
        }
}