/* Source: http://www.youngpup.net/_projectDirectories/sleight/index.html */
if (navigator.platform == "Win32" && navigator.appName == "Microsoft Internet Explorer" && window.attachEvent) {
 document.writeln('<style type="text/css">img { visibility: hidden }</style>');
 window.attachEvent("onload", load);
}

function load()
{
 var rslt = navigator.appVersion.match(/MSIE (\d+\.\d+)/, '');
 var itsAllGood = (rslt != null && Number(rslt[1]) >= 5.5);

 for (i = document.images.length - 1, img = null; (img = document.images[i]); i--) {
  if (itsAllGood && img.src.match(/\.png$/i) != null)
  {
    img.style.width = img.width + "px";
    img.style.height = img.height + "px";
    img.style.filter = "progid:DXImageTransform.Microsoft.AlphaImageLoader(src='" + img.src + "', sizingMethod='scale')"
    img.src = "layout/x.gif";
  }
  img.style.visibility = "visible";
 }
}

function update_form()
{
 var tags = document.getElementById("f_action").getElementsByTagName("input");
 for (var i = 0; i < tags.length; i++) update(tags[i]);
}

function update(that)
{
  if (that.checked)
  {
    document.getElementById("f_new_details").style.display =
      that.value == "update" ? "block" : "none";
    document.getElementById("f_msgs").style.display =
      that.value == "remove" ? "none"  : "block";
  }
}