drag & drop re arrange menu items in front end page

in my WP MultiUser project i am designing a template for managing the menu like delete page, drag & reorder menu items by using below code
(only the super admin can access the back-end admin panel)

<?php
 $menu_name = 'header';
 if ( ( $locations = get_nav_menu_locations() ) && isset( $locations[ $menu_name ] ) ) {
$menu = wp_get_nav_menu_object( $locations[ $menu_name ] );
$menu_items = wp_get_nav_menu_items($menu->term_id);
$menu_list = '';
$menu_list .='<div id="contentLeft"><ul>';
foreach ( (array) $menu_items as $key => $menu_item ) {
    $title = $menu_item->title;
    $url = $menu_item->url;
    $menuorder = $menu_item->menu_order;
    $mdelete1 = wp_nonce_url( get_bloginfo('wpurl') . "/wp-admin/post.php?action=delete&post=" .$menu_item->object_id, 'delete-post_' . $menu_item->object_id);
    $menu_list .= '<li id="recordsArray_' . $menuorder.'">' .$title ;
    $menu_list .= ' <span> <a href="' . $mdelete1 . '"> Delete </a> </span></li> ';
}
$menu_list .='</ul></div>';
} else {
$menu_list = '<ul><li>Menu "' . $menu_name . '" not defined.</li></ul>';
}
echo $menu_list;
?>

and for drag & drop i used jquery Link

here is my updatedb.php code

<?php global $wpdb;
$action= mysql_real_escape_string($_POST['action']); $updateRecordsArray= $_POST['wpdb->postmetaArray']; if ($action == "updateRecordsListings"){ $listingCounter = 1; foreach ($updateRecordsArray as $recordIDValue) { $query = $wpdb->get_results("UPDATE records SET recordListingID = " . $listingCounter . " WHERE recordID = " . $recordIDValue); mysql_query($query) or die('Error, insert query failed'); $listingCounter = $listingCounter + 1;
} echo '

';
    print_r($updateRecordsArray);
    echo '
'; echo 'If you refresh the page, you will see that records will stay just as you modified.'; } ?>

Now i can delete pages(menu items ) i can rearrange menu items by dragging but i am not able to update the same into the Database what i mean is: if i drag and reorder the pages the new order has to save in menu but it was not updating in server

what i am missing…..