var bCached = false;
  var images = new Array(13);
  function SwapImage(imageNumber)
  {
    if(bCached)
      document.images.MainImage.src = images[imageNumber].src;
    alert(imageNumber);
  }
  var win;
  function popWindow(img, w, h)
  {
    var winl = (screen.width - w) / 2;
    var wint = (screen.height - h) / 2;
    if(win!=null) win.close();
    win = window.open(img,'admwin','toolbar=yes,location=yes,status=yes,menubar=yes,scrollbars=yes,width='+w+',height='+h+',resizable=yes,top='+wint+',left='+winl);
    win.focus();
    win.creator = self;
  }

  function SwapImage(imageNumber,descr)
  {
    if(bCached)
    {
      document.images.MainImage.src = images[imageNumber].src;
      if(document.getElementsByName('.mainImageCaption') !=null)
        document.getElementsByName('mainImageCaption').innerText=descr;
    }
  }
  function CacheImages(name, index)
  {
    images[index] = new Image();
    images[index].src = name;
  }
  function setCached()
  {
    bCached = true;
  }

  var win;
  function pop(s)
  {
    win = window.open(s,'_chantre','toolbar=yes,location=no,status=yes,menubar=yes,scrollbars=yes,width=800,height=600,resizable=yes');
    win.focus();
  }

  var imageCaptionText = 'Click the thumbnails below to view the image!';