xblog_navbar");
  var $collapse = document.querySelector(".navbar-collapse");

  var __HuxNav__ = {
    close: function() {
      $navbar.className = " ";
      // wait until animation end.
      setTimeout(function() {
        // prevent frequently toggle
        if($navbar.className.indexOf("in") < 0) {
          $collapse.style.height = "0px"
        }
      },400)
    },
    open: function() {
      $collapse.style.height = "auto"
      $navbar.className += " in";
    }
  }

  // Bind Event
  $toggle.ad