<!-- Hide script from old browsers

    if (document.images) // only for browsers that support images
    {
      // Load all the images once only for faster access 
      img1 = new Image
      img1.src = "images/header.jpg"
   }
    else
    {
      // Must be an old browser
      img1 = ""
      document.roll = ""
    }

// End hiding script from old browsers -->