// Preloaded images
    if (document.images)
    {
      demo1 = new Image();
      demo1.src = "/lab/degrading/2.jpg" 

      demo2 = new Image();
      demo2.src = "/lab/degrading/3.jpg";

      demo3 = new Image();
      demo3.src = "/lab/degrading/4.jpg";

      demo4 = new Image();
      demo4.src = "/lab/degrading/5.jpg";

      demo5 = new Image();
      demo5.src = "/lab/degrading/6.jpg";

      demo6 = new Image();
      demo6.src = "/lab/degrading/7.jpg";

      demo7 = new Image();
      demo7.src = "/lab/degrading/8.jpg";

      demo8 = new Image();
      demo8.src = "/lab/degrading/9.jpg";

      demo9 = new Image();
      demo9.src = "/lab/degrading/10.jpg";

      demo10 = new Image();
      demo10.src = "/lab/degrading/11.jpg";

      demo11 = new Image();
      demo11.src = "/lab/degrading/12.jpg";

      demo12 = new Image();
      demo12.src = "/lab/degrading/13.jpg";

      demo13 = new Image();
      demo13.src = "/lab/degrading/14.jpg";

      demo14 = new Image();
      demo14.src = "/lab/degrading/15.jpg";
    }
        // Reusable timer
    function timeimgs(numb)
    {
      thetimer = setTimeout("imgturn('" +numb+ "')", 170);
    }
    // Reusable image turner
    function imgturn(numb)
    {
      if (document.images)
      {
        // This will loop the image
        if (numb == "14")
        {
          document["demo"].src = eval("demo14.src");
          timeimgs('0');
        }
        else
        {
          document["demo"].src = eval("demo" + numb + ".src");
          timeimgs(numb = ++numb);
        }
      }
    }