$(function () {
  var $nav = $("#menu");
  $nav.on("click", function () {
      $(".site-search").hide();
      $("#search").removeClass("icon_delete");
      $(this).toggleClass ("icon_delete");
      $(".hide-nav").slideToggle();
  });
$('body').append('<section id="pageJumpBtn" class="cm_ani_out" style="display: none; "><a id="goPageTop" class="fl_top " href="javascript:void(0)"><span class="icon_top"></span></a><a id="goPageHome" class="fl_messges" href="/"><span class="icon_home"></span></a></section>');
var scroller = $('#pageJumpBtn')
    $(window).scroll(function() {
        var h = document.documentElement.scrollTop + document.body.scrollTop
        h > 200 ? scroller.fadeIn() : scroller.fadeOut();
    })
    $('#goPageTop').on("click", function(){
        $('html,body').animate({
            scrollTop: 0
        }, 300)
})
$("#search").click(function() {
    $(".hide-nav").hide();
    $("#menu").removeClass("icon_delete");
    $(this).toggleClass ("icon_delete");
    $(".site-search").slideToggle();
    $('.site-search').find('input').focus()
});
});