foreach($this->children[ $forum_data['id'] ] as $idx => $data) {
     if ( $std->check_perms($data['read_perms']) != TRUE ) {
	  continue;
	 }
	 $children[] = "<a href='{$ibforums->base_url}showforum={$data['id']}'>{$data['name']}</a>";

...

}

...

$subs = implode(", ", $children);

return $this->html->SubForumRow($forum_data, $subs);