agent = navigator.userAgent;
  yes = 0;
  if(agent.substring(0,7) == "Mozilla")
    {
    if( parseInt(agent.substring(8,9)) >= 3)
          {
          yes = 1;
          }
    }

  if(yes)
    {


        pc1n = new Image();
        pc1n.src = "../images/pcmpc1.gif";
        pc1h = new Image();
        pc1h.src = "../images/pcmphc1.gif";


        pc2n = new Image();
        pc2n.src = "../images/pcmpc2.gif";
        pc2h = new Image();
        pc2h.src = "../images/pcmphc2.gif";


        pc3n = new Image();
        pc3n.src = "../images/pcmpc3.gif";
        pc3h = new Image();
        pc3h.src = "../images/pcmphc3.gif";


        pc4n = new Image();
        pc4n.src = "../images/pcmpc4.gif";
        pc4h = new Image();
        pc4h.src = "../images/pcmphc4.gif";


        pc5n = new Image();
        pc5n.src = "../images/pcmpc5.gif";
        pc5h = new Image();
        pc5h.src = "../images/pcmphc5.gif";

        pm0n = new Image();
    pm0n.src = "../images/phomem0.gif";
    pm0h = new Image();
    pm0h.src = "../images/phomehm0.gif";

                                                  pm1n = new Image();
      pm1n.src = "../images/pmtm1.gif";
      pm1h = new Image();
      pm1h.src = "../images/pmthm1.gif";
                                                  pm2n = new Image();
      pm2n.src = "../images/pmtm2.gif";
      pm2h = new Image();
      pm2h.src = "../images/pmthm2.gif";
                                                  pm3n = new Image();
      pm3n.src = "../images/pmtm3.gif";
      pm3h = new Image();
      pm3h.src = "../images/pmthm3.gif";
                                                  pm4n = new Image();
      pm4n.src = "../images/pmtm4.gif";
      pm4h = new Image();
      pm4h.src = "../images/pmthm4.gif";
                                                  pm5n = new Image();
      pm5n.src = "../images/pmtm5.gif";
      pm5h = new Image();
      pm5h.src = "../images/pmthm5.gif";
                                                  pm6n = new Image();
      pm6n.src = "../images/pmtsm6.gif";
      pm6h = new Image();
      pm6h.src = "../images/pmtsm6.gif";
            doff = new Image();
        doff.src = "../images/pd.gif"
        don = new Image();
        don.src = "../images/psd.gif"
    }
  function CI(imgNum,imgName)
        {
        if(yes)
          {
          document.images[imgNum].src = eval(imgName + ".src")
          }
        }