function getLowestChildNum($parent = 0){
	global $db;
	$sql = "SELECT id 
			FROM " . PAGES_TABLE . " 
			WHERE parent = $parent";
	$query = $db->execute($sql);	
	while ($page = $query->FetchRow()) {
		$tempThisLevel = getNavLevel($page['id']);
		$tempChildLevel = getLowestChildNum($page['id']);
	}
	return $lowest;
}