if (document.images) {

  aboutuson = new Image();
  aboutuson.src = "images/menu/aboutus_on.jpg";
  aboutusoff = new Image();
  aboutusoff.src = "images/menu/aboutus_off.jpg";

  productson = new Image();
  productson.src = "images/menu/products_on.jpg";
  productsoff = new Image();
  productsoff.src = "images/menu/products_off.jpg";
  
  serviceson = new Image();
  serviceson.src = "images/menu/services_on.jpg";
  servicesoff = new Image();
  servicesoff.src = "images/menu/services_off.jpg";
  
  rfqon = new Image();
  rfqon.src = "images/menu/rfq_on.jpg";
  rfqoff = new Image();
  rfqoff.src = "images/menu/rfq_off.jpg";
  
  qualityon = new Image();
  qualityon.src = "images/menu/quality_on.jpg";
  qualityoff = new Image();
  qualityoff.src = "images/menu/quality_off.jpg";
  
  supporton = new Image();
  supporton.src = "images/menu/support_on.jpg";
  supportoff = new Image();
  supportoff.src = "images/menu/support_off.jpg";
  
  productdevon = new Image();
  productdevon.src = "images/menu/productdev_on.jpg";
  productdevoff = new Image();
  productdevoff.src = "images/menu/productdev_off.jpg";
  
  contactuson = new Image();
  contactuson.src = "images/menu/contactus_on.jpg";
  contactusoff = new Image();
  contactusoff.src = "images/menu/contactus_off.jpg";
  
  homeon = new Image();
  homeon.src = "images/menu/home_on.jpg";
  homeoff = new Image();
  homeoff.src = "images/menu/home_off.jpg";
  
  
  
}

function changeImages() {
  if (document.images) {
    for (var i=0; i<changeImages.arguments.length; i+=2) {
      document[changeImages.arguments[i]].src = eval(changeImages.arguments[i+1] + ".src");
    }
  }
}