Drupal: aller chercher le sous menu de la node en cour.

drupal_submenu_node.php

<?php
/*Ne pas oublier d'aller chercher le bon chemin de node !*/
$path = 'node/'.$node->nid;
$parent = menu_link_get_preferred($path);
$parameters = array(
	'active_trail' => array($parent['plid']),
	'only_active_trail' => FALSE,
	'min_depth' => $parent['depth']+1,
	'max_depth' => $parent['depth']+1,
	'conditions' => array('plid' => $parent['mlid']),
	);
$children = menu_build_tree($parent['menu_name'], $parameters);
/* menu_tree_output permet de rendre le tableau "renderable" */
print render(menu_tree_output($children));
?>