if ($node_links) {
    // Use db_rewrite_sql to evaluate view access without loading each full node.
    $nids = array_keys($node_links);
    $placeholders = '%d'. str_repeat(', %d', count($nids) - 1);
    $result = db_query(db_rewrite_sql("SELECT n.nid FROM {node} n WHERE n.status = 1 AND n.nid IN (". $placeholders .")"), $nids);
    while ($node = db_fetch_array($result)) {
      $nid = $node['nid'];
      foreach ($node_links[$nid] as $mlid => $link) {
        $node_links[$nid][$mlid]['access'] = TRUE;
      }
    }
  }
  _menu_tree_check_access($tree);
  return;
}