isNS4 = (document.layers) ? true : false;
isIE4 = (document.all && !document.getElementById) ? true : false;
isIE5 = (document.all && document.getElementById) ? true : false;
isNS6 = (!document.all && document.getElementById) ? true : false;

function showLayer(id)
{
  var elm;
  elm = document.getElementById(id);

  if (elm)
  {
    elm.style.display = "";
  }
}
function hideLayer(id)
{
  var elm;
  elm = document.getElementById(id);
  if (elm)
  {
    elm.style.display = "none";
  }
}


function setLoadingAloneEx(visible)
{
//  alert(document.documentElement.scrollHeight);
  if (visible)
  {
    var IfrRef = document.getElementById('DivShim');
    var DivRef = document.getElementById('loadingEx');

    document.getElementById('loadingEx').style.height = document.documentElement.scrollHeight+'px';
    showLayer('loadingEx');

    IfrRef.style.width = DivRef.offsetWidth;
    IfrRef.style.height = DivRef.offsetHeight;
    IfrRef.style.top = DivRef.style.top;
    IfrRef.style.left = DivRef.style.left;
    IfrRef.style.zIndex = 1;
    if (isIE4 || isIE5)
    {
      IfrRef.style.display = "block";
    }

    loading = true;
  }
  else
  {
    hideLayer('loadingEx');
    document.getElementById('DivShim').style.display = "none";
    loading = false;
  }

}