code: function change_skin(cls) {
      $.each(my_skins, function (i) {
        $("body").removeClass(my_skins[i]);
      });
  
      $("body").addClass(cls);
      store('skin', cls);
      return false;
    }
docs: Replaces the old skin with the new skin
  @param String cls the new skin class
  @returns Boolean false to prevent link's default action