function Show(ObjID) {
  if (document.layers) document.layers[ObjID].visibility = "show";
  if (document.all) document.all[ObjID].style.visibility = "visible";
 }

 function SH(ObjID) {
  if (document.layers) {
   if (document.layers[ObjID].visibility == "hide") { document.layers[ObjID].visibility = "show"; } else { document.layers[ObjID].visibility = "hide"; }
  }
  if (document.all) {
   if (document.all[ObjID].style.visibility == "hidden") { document.all[ObjID].style.visibility = "visible"; } else { document.all[ObjID].style.visibility = "hidden"; }
  }
 }