Drupal7导航条

可输出二级子菜单

if (module_exists('i18n_menu')) {
$main_menu_tree = i18n_menu_translated_tree(variable_get('menu_main_links_source', 'main-menu'));
} else {
$main_menu_tree = menu_tree(variable_get('menu_main_links_source', 'main-menu'));
}
print drupal_render($main_menu_tree);
endif; ?>