function ShowTransparent(e)
  {
     if(!e && e !="1")
     {
      e = window.event;
     }
     if((e && bShowGreyBackground) || e=="1")
     {
         bShowGreyBackground = ((e.button==1) || (e.button==0) || e=="1")
     }
     if (bShowGreyBackground)
     {
         var f = document.getElementById('divLayerMain');
     if(f)
     {
          var scrollY,scrollX;
          nHeight = document.body.clientHeight;
          nWidth = document.body.clientWidth;

     if (self.pageYOffset)
     {
         // all browsers except IE
         scrollX = self.pageXOffset;
         scrollY = self.pageYOffset;
     }
     else if (document.documentElement && document.documentElement.scrollTop)
     {
         // some IE
         scrollX = document.documentElement.scrollLeft;
         scrollY = document.documentElement.scrollTop;
     }
     else
     {
          // the rest
          scrollX = document.body.scrollLeft;
          scrollY = document.body.scrollTop;
     }
         f.style.left = 0;
         f.style.top = 0;
         f.style.width = document.body.scrollWidth + "px";
         f.style.height = document.body.scrollHeight + "px";
         f.style.visibility="visible";
         f.style.display="block";
      }
  }

      bShowGreyBackground = true;
}

function HideTransparent()
{
    var f = document.getElementById('divLayerMain');
    if(f)
    {
        f.style.visibility="hidden";
        f.style.display="none";
    }
}