function ShowOrHide(id)
 {

  var item = null;
  if (document.getElementById) item = document.getElementById(id);
  else if (document.all) item = document.all[id];
  else if (document.layers) item = document.layers[id];
  if (!item){  }
   else if (item.style)
   {
    if (item.style.display == "none") item.style.display = "";
    else item.style.display = "none";
   }
   else
   {
    item.visibility = "show";
   }
}