function tierMenu(objMenu)
{
  
  if (objMenu.style.display == "none")
      {
      objMenu.style.display = "";
      }
   else
      {
      objMenu.style.display = "none";
      }

}

function tierMenuImage(objMenu,objImage)
{
   if (objMenu.style.display == "none")
   {
       objMenu.style.display = "";
       objImage.src = "../clean_~1/website/image/minus.gif";
   }
   else
   {
       objMenu.style.display = "none";
       objImage.src = "../clean_~1/website/image/plus.gif";
   }
}