if (document.images) {
var product = new Image();product.src = 'pix/nav_product.gif';
var product_on = new Image();product_on.src = 'pix/nav_product_on.gif';
var programs = new Image();programs.src = 'pix/nav_programs.gif';
var programs_on = new Image();programs_on.src = 'pix/nav_programs_on.gif';
var online_ordering = new Image();online_ordering.src = 'pix/nav_online_ordering.gif';
var online_ordering_on = new Image();online_ordering_on.src = 'pix/nav_online_ordering_on.gif';
var vendors = new Image();vendors.src = 'pix/nav_vendors.gif';
var vendors_on = new Image();vendors_on.src = 'pix/nav_vendors_on.gif';
}
function ChangeImg(id,name){
  if (document.images) {document.images[id].src=eval(name+".src"); }
}