function checkFrameset1() {
  if(!parent.topFrame)
   location.href="../index.htm?" + location.pathname;
 }
 
  function checkFrameset2() {
  if(!parent.topFrame)
   location.href="../../index.htm?" + location.pathname;
 }

 function checkFrameset3() {
  if(!parent.topFrame)
   location.href="../../../index.htm?" + location.pathname;
 }