vv3d0x

(function ($, window, document) {
    'use strict';

    const SC_UP = (1 << 1);
    const SC_DOWN = (1 << 0);

    var $navbar = $("#nav-menu"),
        $offset = $navbar.offset().top;

    var lock = 0;

vv3d0x

<?php
//Input data
$data = array(
  0 => array(
    'id' => 0,
    'parent_id' => NULL,
    'level' => 1,
  ),
  1 => array(
    'id' => 1,