function toggleMenu(elmnt)
{
document.all(elmnt).style.visibility="visible"
}
function toggleMenu(elmnt)
{
document.all(elmnt).style.visibility="hidden"
}
function toggleMenu(element,flag) 
 { 
      if (flag=="1"){ 
         if (document.layers) { 
             document.layers[element].visibility = "show"; 
         } else if (document.all) { 
             document.all[element].style.visibility = "visible"; 
         } else if (document.getElementById) { 
             document.getElementById(element).style.visibility = "visible"; 
         } 
     } else if (flag=="0") { 
         if (document.layers) { 
             document.layers[element].visibility = "hide"; 
         } else if (document.all) { 
             document.all[element].style.visibility = "hidden"; 
         } else if (document.getElementById) { 
             document.getElementById(element).style.visibility = "hidden"; 
         } 
     } 
 }