browserName = navigator.appName;
  browserVer = parseInt(navigator.appVersion);
  if ((browserName == "Netscape" && browserVer >= 3)
     || (browserName == "Microsoft Internet Explorer" && browserVer >= 4)) {
    version = "n3";
  } else {
    version = "n2";
  }

  var intCurSS = 0;
  var intNumSS = endnumber;

  if (version == "n3") {
    var NN3 = false;

    var image0 = new Image(520,342);
    image0.src = "images/"+name+"t0.jpg";
    var image1 = new Image(520,342);
    image1.src = "images/"+name+"t1.jpg";
    var image2 = new Image(520,342);
    image2.src = "images/"+name+"t2.jpg";
    var image3 = new Image(520,342);
    image3.src = "images/"+name+"t3.jpg";
    var image4 = new Image(520,342);
    image4.src = "images/"+name+"t4.jpg";
    var image5 = new Image(520,342);
    image5.src = "images/"+name+"t5.jpg";


  }

  function back3() {
    if (version == "n3") {
      if (--intCurSS < 0) { intCurSS = intNumSS; }
      document.screenshot.src = eval("image" + intCurSS + ".src");
    }
  }

  function forward3() {
    if (version == "n3") {
      if (++intCurSS > intNumSS) { intCurSS = 0; }
      document.screenshot.src = eval("image" + intCurSS + ".src");
    }
  }
  NN3 = true;

  function back()  {
    if (version == "n3" && NN3) { back3(); }
  }

  function forward()  {
    if (version == "n3" && NN3) { forward3(); }
  }

  function zoom(new_window,w,h) {
  new_window = ("sw_details_" + intCurSS + ".html");
  window.open(new_window, '', 'location=0,resizable=0,status=0,titlebar=0,directories=0,toolbar=0,menubar=0,scrollbars=auto,status=0,width='+w+',height='+h);
  return;
  }