$menu = array(
	0 => array(
		array('id' => 1, 'parent_id' => 0, 'title' => 'First level #1'),
		array('id' => 2, 'parent_id' => 0, 'title' => 'First level #2'),
		array('id' => 3, 'parent_id' => 0, 'title' => 'First level #3'),
	),
	1 => array(
		array('id' => 8, 'parent_id' => 2, 'title' => 'Second level #8'),
	),
	2 => array(
		array('id' => 4, 'parent_id' => 2, 'title' => 'Second level #4'),
		array('id' => 5, 'parent_id' => 2, 'title' => 'Second level #5'),
	),
	4 => array(
		array('id' => 6, 'parent_id' => 4, 'title' => 'Third level #6'),
		array('id' => 7, 'parent_id' => 4, 'title' => 'Third level #7'),
	),
);