if (document.images) {

 homeon = new Image();
 homeon.src = "/images/menu_home_on.gif";

 homeoff = new Image();
 homeoff.src = "/images/menu_home_off.gif";

 producton = new Image();
 producton.src = "/images/menu_product_on.gif";

 productoff = new Image();
 productoff.src = "/images/menu_product_off.gif";

 orderon = new Image();
 orderon.src = "/images/menu_order_on.gif";

 orderoff = new Image();
 orderoff.src = "/images/menu_order_off.gif";

 photoson = new Image();
 photoson.src = "/images/menu_photos_on.gif";

 photosoff = new Image();
 photosoff.src = "/images/menu_photos_off.gif";

 contacton = new Image();
 contacton.src = "/images/menu_contact_on.gif";

 contactoff = new Image();
 contactoff.src = "/images/menu_contact_off.gif";

 }

function Open(page, width, height) {
LeftPosition = (screen.width) ? (screen.width-width)/2 : 0;
TopPosition = (screen.height) ? (screen.height-height)/2 : 0;
OpenWin = this.open(page,"PopupWindow","toolbar=no,width="+width+",height="+height+",left="+LeftPosition+",top="+TopPosition+",directories=no,status=no,scrollbars=no,resize=no,menubar=no")
}