$(function()
        {
          $(".menu_ico").click(function()
          {
            $(".menu_down").slideToggle("slow");
          });
        })
      

        function searchInfo() {
            var key = document.getElementById("key").value;
            var base=$('head').data('base')
            location.href =base+ "search.php?key=" + key;
        }
    

        $(".u-top").click(function(){var speed = 200;
          //滑动的速度
          $('body,html').animate({scrollTop:0}
      ,speed);return false;}
      );