function initialize() {
    for (var i=1; i<100; i++) {
      var sslink = document.getElementById("ss" + i);
      if (sslink===null)
          continue;
      explanations["ss" + i] = sslink.innerHTML;
      sslink.href = "#";
      sslink.innerHTML = screenshotHtml;
      sslink.style.visibility = "visible";
    }
  }
  function show(link, imageFileName) {
      var screenshotImage = document.getElementById("screenshotImage");
      screenshotImage.src = "/images/" + imageFileName;
      var explanationSpan = document.getElementById("explanation");
      explanationSpan.innerHTML = explanations[link.id];
      setVisible("screenshot");
      var slideshow = document.getElementById("slideshow");
      slideshow.style.visibility = "hidden";
  }
  function hide() {
      var screenshotImage = document.getElementById("screenshotImage");
      screenshotImage.src = "";
      setVisible("screenshot");
      slideshow.style.visibility = "visible";
  }

  var currentSS = null;
  var screenshotHtml = "<img src='/images/information.png' width=14 height=14 valign=bottom>";
  var explanations = new Object;
  initialize();