var ns4,ie4
    ns4 = (document.layers)? true:false
    ie4 = (document.all)? true:false
    function cmon(imgnum)
    {
    var imgname="cm" + imgnum
      if(ns4)
      {
      document.layercm0.document.images[imgname].src="../images/common/cm" + imgnum + "on.gif";
      }
      else if(ie4)
      {
      document.images[imgname].src="../images/common/cm" + imgnum + "on.gif";
      }
    }

    function cmoff(imgnum)
    {
    var imgname="cm" + imgnum
      if(ns4)
      {
      document.layercm0.document.images[imgname].src="../images/common/cm" + imgnum + "off.gif";
      }
      else if(ie4)
      {
      document.images[imgname].src="../images/common/cm" + imgnum + "off.gif";
      }
    }

       function cmimg(layernum)
    {

      var intI,layername,layernameie,inta
      if (document.layers)
      {
        for(intI=0;intI<5;intI++)
        {
          layername = "layercm" + intI
          document.layers[layername].visibility='hide';
        }
        layername = "layercm" + layernum
        document.layers[layername].visibility='show';
      }
      else
      {
        for(intI=0;intI<5;intI++)
        {
          layername = "layercm" + intI
          document.all[layername].style.visibility='hidden';
        }
        layername = "layercm" + layernum
        document.all[layername].style.visibility='visible';

        }
      }