if ($angeltype['user_angeltype_id'] != null)
        $buttons[] = button(page_link_to('user_angeltypes') . '&action=delete&user_angeltype_id=' . $angeltype['user_angeltype_id'], _("leave"), 'cancel');
      else
        $buttons[] = button(page_link_to('user_angeltypes') . '&action=add&angeltype_id=' . $angeltype['id'], _("join"), 'add');