[Admin]

Find the makenav() function in functions.php, and comment out these lines:

      if ($highlightlast) {
        $templatename="nav_linkon";
      } else {
        $templatename="nav_linkoff";
      }

      if (strlen($code)>0) {
        $code.=gettemplate("nav_joiner",0);
      }

      $threadinfo=getthreadinfo($id);
      $nav_url="showthread.php?s=$session[sessionhash]&threadid=$id";
      $nav_title=$threadinfo[title];

      eval("\$code .= \"".gettemplate("$templatename")."\";");

this should do the trick.