function showImage(image) {
  var browserName=navigator.appName;
  var browserVer=parseInt(navigator.appVersion);
  if (browserName=="Microsoft Internet Explorer" &&
      browserVer < 7) {
    window.open(image);
  } else {
    var c = document.getElementById("imageContainer");
    var i = document.getElementById("enlargedImage");
    var f = document.getElementById("fadebg");
    f.style.visibility = "visible";
    i.src = image;
    c.style.display = "block";
  }
}
function hideImage() {
  var c = document.getElementById("imageContainer");
  var i = document.getElementById("enlargedImage");
  var f = document.getElementById("fadebg");
  i.src = "";
  c.style.display = "none";
  f.style.visibility = "hidden";
}