public static function convertFromOpml( $opml, $labelRoot, $rootClass = NULL )
	{
		$parser		= new XML_OPML_Parser();
		$parser->parse( $opml );
		$lines		= $parser->getOutlines();
		$list		= new ADT_Tree_Menu_List( $labelRoot, array( 'class' => $rootClass ) );

		self::buildMenuListFromOutlines( $lines, $list );
		return $list;
	}