var dom = (document.getElementById && !document.all)? 1: 0;
function help(elementID)
{
  var obj = (dom) ? document.getElementById(elementID) : document.all[elementID];

  if (obj.style.visibility == "hidden")
  { 
    obj.style.visibility = "visible";
    obj.style.display = "block";
  }
  else 
  {
    obj.style.visibility = "hidden";
    obj.style.display = "none";
  }
}