基于jquery实现简单的手风琴特效_jquery

/* CSS Document */
body {
  margin: 0 auto;
  padding: 0 auto;
  font-size: 9pt;
  font-family: 微软雅黑, 宋体, Arial, Helvetica, Verdana, sans-serif;
}
.accordion {
  padding-left: 0px;
}
.accordion li {
  border-top: 1px solid #000;
  list-style-type: none;
}
.titlemenu {
  width: 100%;
  height: 30px;
  background-color: #F2F2F2;
  padding: 5px 0px;
  text-align: left;
  cursor: pointer;
}
.titlemenu img {
  position: relative;
  left: 20px;
  top: 5px;
}
.titlemenu span {
  display: inline-block;
  position: relative;
  left: 40px;
}
.submenu {
  text-align: left;
  width: 100%;
  padding-left: 0px;
}
.submenu li {
  list-style-type: none;
  width: 100%;
}
.submenu li img {
  position: relative;
  left: 20px;
  top: 5px;
}
.submenu li a {
  position: relative;
  left: 40px;
  top: 5px;
  text-decoration: none;
}
.submenu li span {
  display: inline-block;
  height: 30px;
  padding: 5px 0px;
}
.hover {
  background-color: #4A5B79;
}

(function ($) {
  piano = function () {
    _menu ='[{"title":"一级目录","img":"images/cog.png","submenu":[{"title":"二级目录","img":"images/monitor_window_3d.png"},{"title":"二级目录","img":"images/monitor_window_3d.png"},{"title":"二级目录","img":"images/monitor_window_3d.png"}]},{"title":"一级目录","img":"images/cog.png","submenu":[{"title":"二级目录","img":"images/monitor_window_3d.png"},{"title":"二级目录","img":"images/monitor_window_3d.png"},{"id":"4","title":"二级目录","img":"images/monitor_window_3d.png"}]}]';
    return ep = {
      init: function (obj) {
        _menu = eval('(' + _menu + ')');
         var li ="";
        $.each(_menu, function (index, element) {
          li += '
@@##@@' + element.title + '
';
          if(element.submenu!=null)
          {
            li+='
';
            $.each(element.submenu, function (ind, ele) {
              li += '
@@##@@' + ele.title + '
';
            });
            li+='
';
          }
          li+='
';
        });
        obj.append(li);
      }
    }
  }

  $.fn.accordion = function (options) {
    var pia = new piano();
    pia.init($(this));
    return this.each(function () {
      var accs = $(this).children('li');
       accs.each(reset);
      accs.click(onClick);
      var menu_li = $(".submenu").children("li");
      menu_li.each(function (index, element) {
        $(this).mousemove(function (e) {
          $(this).siblings().removeClass("hover");
          $(this).find("a").css("color", "#fff");
          $(this).siblings().find("a").css("color", "#000");
          $(this).addClass("hover");
        });
      });
    });
  }

  function onClick() {
    $(this).siblings('li').find("ul").each(hide);
    $(this).find("ul").slideDown('normal');
    return false;
  }

  function hide() {
    $(this).slideUp('normal');
  }

  function reset() {
    $(this).find("ul").hide();
  }
})(jQuery);