diff --git a/includes/menu.inc b/includes/menu.inc
index c4fdaaa..db2329e 100644
--- a/includes/menu.inc
+++ b/includes/menu.inc
@@ -1006,7 +1006,7 @@ function menu_tree($menu_name, $skip_hidden = FALSE) {
   $menu_output = &drupal_static(__FUNCTION__, array());
 
   if (!isset($menu_output[$menu_name])) {
-    $tree = menu_tree_page_data($menu_name, $skip_hidden);
+    $tree = menu_tree_page_data($menu_name, NULL, FALSE, $skip_hidden);
     $menu_output[$menu_name] = menu_tree_output($tree);
   }
   return $menu_output[$menu_name];
@@ -1830,23 +1830,29 @@ function menu_list_system_menus() {
 
 /**
  * Returns an array of links to be rendered as the Main menu.
+ * @param $skip_hidden
+ *   (optional) Improve performance by skipping hidden menu links in tree
+ *   see _menu_tree_check_access
  */
-function menu_main_menu() {
-  return menu_navigation_links(variable_get('menu_main_links_source', 'main-menu'));
+function menu_main_menu($skip_hidden = FALSE) {
+  return menu_navigation_links(variable_get('menu_main_links_source', 'main-menu'), $skip_hidden);
 }
 
 /**
  * Returns an array of links to be rendered as the Secondary links.
+ * @param $skip_hidden
+ *   (optional) Improve performance by skipping hidden menu links in tree
+ *   see _menu_tree_check_access
  */
-function menu_secondary_menu() {
+function menu_secondary_menu($skip_hidden = FALSE) {
 
   // If the secondary menu source is set as the primary menu, we display the
   // second level of the primary menu.
   if (variable_get('menu_secondary_links_source', 'user-menu') == variable_get('menu_main_links_source', 'main-menu')) {
-    return menu_navigation_links(variable_get('menu_main_links_source', 'main-menu'), 1);
+    return menu_navigation_links(variable_get('menu_main_links_source', 'main-menu'), 1, $skip_hidden);
   }
   else {
-    return menu_navigation_links(variable_get('menu_secondary_links_source', 'user-menu'), 0);
+    return menu_navigation_links(variable_get('menu_secondary_links_source', 'user-menu'), 0, $skip_hidden);
   }
 }
 
@@ -1857,18 +1863,21 @@ function menu_secondary_menu() {
  *   The name of the menu.
  * @param $level
  *   Optional, the depth of the menu to be returned.
+ * @param $skip_hidden
+ *   (optional) Improve performance by skipping hidden menu links in tree
+ *   see _menu_tree_check_access
  *
  * @return
  *   An array of links of the specified menu and level.
  */
-function menu_navigation_links($menu_name, $level = 0) {
+function menu_navigation_links($menu_name, $level = 0, $skip_hidden = FALSE) {
   // Don't even bother querying the menu table if no menu is specified.
   if (empty($menu_name)) {
     return array();
   }
 
   // Get the menu hierarchy for the current page.
-  $tree = menu_tree_page_data($menu_name, $level + 1);
+  $tree = menu_tree_page_data($menu_name, $level + 1, FALSE, $skip_hidden);
 
   // Go down the active trail until the right level is reached.
   while ($level-- > 0 && $tree) {
@@ -2900,7 +2909,7 @@ function _menu_link_build($item) {
 /**
  * Builds menu links for the items in the menu router.
  */
-function _menu_navigation_links_rebuild($menu) {
+function _menu_navigation_links_rebuild($menu, $skip_hidden = FALSE) {
   // Add normal and suggested items as links.
   $menu_links = array();
   foreach ($menu as $path => $item) {