function OpenMenu(item)
{
   var subMenu = document.getElementById(item.id + ".Items");
   if (subMenu != null)
   {
      subMenu.style.display="block";
   }
   return;
}

function CloseMenu(item)
{
   var subMenu = document.getElementById(item.id + ".Items");
   if (subMenu != null)
      subMenu.style.display="none";
   return;
}