Menu personnalisé avec JS dans le thème WordPress

<script type="text/javascript">
$("#menu-toggle").click(function(e) {
    e.preventDefault();
    $("#wrapper").toggleClass("toggled");
});

(function($) {

  $.fn.menumaker = function(options) {

      var cssmenu = $(this), settings = $.extend({
        title: "Menu",
        format: "dropdown",
        sticky: false
      }, options);

      return this.each(function() {
        cssmenu.prepend('<div id="menu-button">' + settings.title + '</div>');
        $(this).find("#menu-button").on('click', function(){
          $(this).toggleClass('menu-opened');
          var mainmenu = $(this).next('ul');
          if (mainmenu.hasClass('open')) {
            mainmenu.hide().removeClass('open');
          }
          else {
            mainmenu.show().addClass('open');
            if (settings.format === "dropdown") {
              mainmenu.find('ul').show();
            }
          }
        });

        cssmenu.find('li ul').parent().addClass('has-sub');

        multiTg = function() {
          cssmenu.find(".has-sub").prepend('<span class="submenu-button"></span>');
          cssmenu.find('.submenu-button').on('click', function() {
            $(this).toggleClass('submenu-opened');
            if ($(this).siblings('ul').hasClass('open')) {
              $(this).siblings('ul').removeClass('open').hide();
            }
            else {
              $(this).siblings('ul').addClass('open').show();
            }
          });
        };

        if (settings.format === 'multitoggle') multiTg();
        else cssmenu.addClass('dropdown');

        if (settings.sticky === true) cssmenu.css('position', 'fixed');

        resizeFix = function() {
          if ($( window ).width() > 768) {
            cssmenu.find('ul').show();
          }

          if ($(window).width() <= 768) {
            cssmenu.find('ul').hide().removeClass('open');
          }
        };
        resizeFix();
        return $(window).on('resize', resizeFix);

      });
  };
})(jQuery);

(function($){
$(document).ready(function(){

$("#cssmenu").menumaker({
   title: "Menu",
   format: "multitoggle"
});

});
})(jQuery);
</script>

/*!
 * Start Bootstrap - Simple Sidebar HTML Template (http://startbootstrap.com)
 * Code licensed under the Apache License v2.0.
 * For details, see http://www.apache.org/licenses/LICENSE-2.0.
 */

/* Toggle Styles */
/* FB, wersja jezykowa */
.fb-language {
  position: fixed;
  bottom: 20px;
  left: 65px;
  list-style: none;
}

/* Ikonka jezyka */
.lang-item {
    display: inline;
}

/* ikonka fb */
.fb-language img {
  display: inline-block;
  width: 20px;
  height: auto;
}

.fb-language p {
  display: inline-block;
  color: #999999;
  font-size: 12px;
  margin-left: 5px;
}

.fb-language a {
  text-decoration: none;
  color: #999999;
}

.fb-language a:hover {
  color: #656565;
  text-decoration: underline;
}

/* Kolor linku w menu jezeli jestes na podstronie */
.current_page_item a {
  color: black !important;
}

.page_item {
  list-style: none !important;
}

.dropdown-toggle .icon-bar {
  margin-bottom:4px;
  margin-top: 4px;
  display: block;
  width: 22px;
  height: 2px;
  background-color: #ffffff;
  border-radius: 1px;
}

/* kolor button'a dla mobilnego menu */
button {
  background-color: rgb(230, 225, 225) !important;
  text-align: left !important;
  left: 8px !important;
  position: absolute;
}

.navbar-header {
  position: fixed !important;
  width: 100% !important;
  height: 45px !important;
  background-color: rgb(255, 255, 255) !important;
  border-radius: 0 !important;
  margin: 0 auto !important;
  text-align: center !important;
}

.navbar-header img {
  width: 13% !important;
  height: auto !important;
  margin: 0 auto !important;
  text-align: center !important;
}

#wrapper {
    padding-top: 50px;
    padding-left: 0;
    -webkit-transition: all 0.5s ease;
    -moz-transition: all 0.5s ease;
    -o-transition: all 0.5s ease;
    transition: all 0.5s ease;
}

#wrapper.toggled {
    padding-left: 250px;
}

#sidebar-wrapper {
    z-index: 1000;
    position: fixed;
    left: 250px;
    width: 0;
    height: 100%;
    margin-left: -250px;
    overflow-y: auto;
    background-color: rgb(255, 255, 255);
    -webkit-transition: all 0.5s ease;
    -moz-transition: all 0.5s ease;
    -o-transition: all 0.5s ease;
    transition: all 0.5s ease;
}

#wrapper.toggled #sidebar-wrapper {
    width: 250px;
}

#page-content-wrapper {
    width: 100%;
    background-color: rgb(214, 214, 214);
    position: absolute;
    padding: 15px;
}

#wrapper.toggled #page-content-wrapper {
    position: absolute;
    margin-right: -250px;
}

/* Sidebar Styles */
.sidebar-nav {
    position: block;
    top: 0;
    width: 250px;
    margin: 0;
    padding-top: 9px;
    padding-left: 50px;
    list-style: none;
    text-align: left;
}

.sidebar-nav li {
    list-style: none;
    text-indent: 20px;
    line-height: 40px;
}

.sidebar-nav li a.bez:before {
  content: " " !important;
}

.sidebar-nav li a {
    display: block;
    line-height: 18px;
    text-decoration: none;
    color: #999999;
}

.sidebar-nav li a:hover {
    text-decoration: none;
    color: #000;
}

.sidebar-nav li a:active,
.sidebar-nav li a:focus {
    text-decoration: none;
}

.sidebar-nav > .sidebar-brand {
    font-size: 14px;
    line-height: 30px;
}

.sidebar-nav > .sidebar-brand a {
    color: #999999;
}

.sidebar-nav > .sidebar-brand a:hover {
    color: #000;
    background: none;
}

.sidebar-nav > .sidebar-links {
    padding-left: 43px;
}

.sidebar-nav2 {
    position: block;
    top: 0;
    width: 250px;
    margin: 0;
    padding-top: 60px;
    padding-left: 80px;
    list-style: none;
    text-align: left;
    list-style: none;
    text-transform: lowercase;
}

.sidebar-nav2 li {
    text-indent: 20px;
    line-height: 24px;
}

.sidebar-nav2 li a {
    display: block;
    text-decoration: none;
    color: #999999;
}

.sidebar-nav2 li a:hover {
    text-decoration: none;
    color: #000;
}

.sidebar-nav2 li a:active,
.sidebar-nav2 li a:focus {
    text-decoration: none;
}

@media(max-width: 769px) {
  #wrapper {
    padding-top: 70px !important;
  }

  .sidebar-nav {
    padding-top: 5px !important;
    margin-top: 0;
  }

  .fb-language {
    position: absolute;
    bottom: 20px;
    left: 65px;
    z-index: 10;
  }
}

@media(min-width:769px) {
    #wrapper {
        padding-left: 250px;
    }

    #wrapper.toggled {
        padding-left: 0;
    }

    #sidebar-wrapper {
        width: 250px;
    }

    #wrapper.toggled #sidebar-wrapper {
        width: 0;
    }

    #page-content-wrapper {
        padding: 20px;
        position: relative;
        background-color: rgb(214, 214, 214);
    }

    #wrapper.toggled #page-content-wrapper {
        position: relative;
        margin-right: 0;
    }
}

<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/js/bootstrap.min.js"></script>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.4/jquery.min.js"></script>
<!-- Sidebar -->
<div class="navbar-header navbar-toggle">
  <button href="#menu-toggle" class="btn btn-xs btn-default dropdown-toggle" id="menu-toggle">
    <span class="sr-only">Toggle navigation</span>
    <span class="icon-bar"></span>
    <span class="icon-bar"></span>
    <span class="icon-bar"></span>
  </button>
  </a>
</div>
<div id="sidebar-wrapper">
    <div class="sidebar-nav">
      <li class="sidebar-brand"><span class="brand"></span> <a href="#arch" data-toggle="collapse" data-parent="#MainMenu">ARCHITEKTURA</a></li>
      <ul class="collapse" id="arch">
        <li><a href="#jedno" data-toggle="collapse" data-parent="#arch">jednorodzinne</a></li>
        <ul class="collapse" id="jedno">
          <li><a href="opolski.html" data-parent="#jedno">dom opolski</a></li>
          <li><a href="#" data-parent="#jedno">dom 2</a></li>
          <li><a href="#" data-parent="#jedno">dom 3</a></li>
        </ul>
        <li><a href="#wielo" data-toggle="collapse" data-parent="#arch">wielorodzinne</a></li>
        <ul class="collapse" id="wielo">
          <li><a href="#" data-parent="#wielo">dom 1</a></li>
          <li><a href="#" data-parent="#wielo">dom 2</a></li>
          <li><a href="#" data-parent="#wielo">dom 3</a></li>
        </ul>
        <li><a href="#uslu" data-toggle="collapse" data-parent="#arch">us?ugowe</a></li>
        <ul class="collapse" id="uslu">
          <li><a href="przedszkole.html" data-parent="#uslu">przedszkole w Chró?cicach</a></li>
          <li><a href="#" data-parent="#uslu">obiekt 2</a></li>
          <li><a href="#" data-parent="#uslu">obiekt 3</a></li>
        </ul>
      </ul>
      <li class="sidebar-brand"><a href="#design" data-toggle="collapse" data-parent="#MainMenu">PORT DESIGN</a></li>
      <ul class="collapse" id="design">
        <li><a href="#meble" data-toggle="collapse" data-parent="#design">meble</a></li>
        <ul class="collapse" id="meble">
          <li><a href="stol.html" data-parent="#meble">stó? 1</a></li>
          <li><a href="#" data-parent="#meble">stó? 2</a></li>
          <li><a href="#" data-parent="#meble">krzes?o 1</a></li>
        </ul>
        <li><a href="#ceramika" data-toggle="collapse" data-parent="#design">ceramika</a></li>
        <ul class="collapse" id="ceramika">
          <li><a href="#" data-parent="#ceramika">ceramika 1</a></li>
          <li><a href="#" data-parent="#ceramika">ceramika 2</a></li>
          <li><a href="#" data-parent="#ceramika">ceramika 3</a></li>
        </ul>
        <li><a href="#grafika" data-toggle="collapse" data-parent="#design">grafika</a></li>
        <ul class="collapse" id="grafika">
          <li><a href="#" data-parent="#grafika">grafika 1</a></li>
          <li><a href="#" data-parent="#grafika">grafika 2</a></li>
          <li><a href="#" data-parent="#grafika">grafika 3</a></li>
        </ul>
        <li><a href="#inne" data-toggle="collapse" data-parent="#design">inne</a></li>
        <ul class="collapse" id="inne">
          <li><a href="#" data-parent="#inne">inne 1</a></li>
          <li><a href="#" data-parent="#inne">inne 2</a></li>
          <li><a href="#" data-parent="#inne">inne 3</a></li>
        </ul>
      </ul>
      <li class="sidebar-brand"><a href="#miejsce" data-toggle="collapse" data-parent="#MainMenu">PORT MIEJSCE</a></li>
      <ul class="collapse" id="miejsce">
        <li><a href="#kawiarnia" data-toggle="collapse" data-parent="#miejsce">kawiarnia</a></li>
        <ul class="collapse" id="kawiarnia">
          <li><a href="kawa.html" data-parent="#kawiarnia">kawa</a></li>
          <li><a href="#" data-parent="#kawiarnia">?niadanie</a></li>
          <li><a href="#" data-parent="#kawiarnia">wydarzenia</a></li>
        </ul>
        <li><a href="#coworking" data-toggle="collapse" data-parent="#miejsce">coworking</a></li>
        <ul class="collapse" id="coworking">
          <li><a href="#" data-parent="#coworking">coworking 1</a></li>
          <li><a href="#" data-parent="#coworking">coworking 2</a></li>
          <li><a href="#" data-parent="#coworking">coworking 3</a></li>
        </ul>
        <li><a href="#warsztat" data-toggle="collapse" data-parent="#miejsce">warsztat</a></li>
        <ul class="collapse" id="warsztat">
          <li><a href="#" data-parent="#warsztat">warsztat 1</a></li>
          <li><a href="#" data-parent="#warsztat">warsztat 2</a></li>
          <li><a href="#" data-parent="#warsztat">warsztat 3</a></li>
        </ul>
        <li><a href="#" data-parent="#miejsce">cennik</a></li>
      </ul>
    </div>

    </div>

</div>