[WEForums]

Just to give a bit more code... Lines 330 - 342:

if ($depth<$forumhomedepth) {
          $forumbits.=makeforumbit($forum['forumid'],$depth+1,$forumperms);
        }
      } // END if can  view
    } // END while ( list($key2,$forum)=each($val1) ) {
  } // END while )
list($key1,$val1)=each($iforumcache["$forumid"]) ) {

  unset($iforumcache["$forumid"]);
  return $forumbits;
}

if (!isset($forumid) or $forumid==0 or $forumid=='')