[Admin]

Installed here, nice hack.

One thing though, to make sure users can't manipulate forms and close a thread, you should replace:

  if ($closethread=="yes") {
      $DB_site->query("UPDATE thread SET open='0' WHERE threadid='$threadid'");
  }

with:

  if ($closethread=="yes"[high] and $permissions['canopenclose']==1[/high]) {
      $DB_site->query("UPDATE thread SET open='0' WHERE threadid='$threadid'");
  }