JQuery ホバー コントロール画像カルーセル - simple code_jquery

<!-- 轮播广告 -->
 <div id="banner_tabs" class="flexslider">
 <ul class="slides">
  <li>
  <a title="" target="_blank" href="#">
   <img width="1920" height="482" alt="" style="background: url(images/banner1.jpg) no-repeat center;" src="images/alpha.png">
  </a>
  </li>
  <li>
  <a title="" href="#">
   <img width="1920" height="482" alt="" style="background: url(images/banner2.jpg) no-repeat center;" src="images/alpha.png">
  </a>
  </li>
  <li>
  <a title="" href="#">
   <img width="1920" height="482" alt="" style="background: url(images/banner3.jpg) no-repeat center;" src="images/alpha.png">
  </a>
  </li>
 </ul>
 <ul class="flex-direction-nav">
  <li><a class="flex-prev" href="javascript:;">Previous</a></li>
  <li><a class="flex-next" href="javascript:;">Next</a></li>
 </ul>
 <ol id="bannerCtrl" class="flex-control-nav flex-control-paging">
  <li><a>1</a></li>
  <li><a>2</a></li>
  <li><a>2</a></li>
 </ol>
 </div>
 <script src="js/jquery-1.10.2.min.js"></script>
 <script src="js/slider.js"></script>
 <script type="text/javascript">
 $(function () {
  var bannerSlider = new Slider($('#banner_tabs'), {
  time: 5000,
  delay: 400,
  event: 'hover',
  auto: true,
  mode: 'fade',
  controller: $('#bannerCtrl'),
  activeControllerCls: 'active'
  });
  $('#banner_tabs .flex-prev').click(function () {
  bannerSlider.prev()
  });
  $('#banner_tabs .flex-next').click(function () {
  bannerSlider.next()
  });
 })
 </script>

.flexslider {
  margin: 0px auto 20px;
  position: relative;
  width: 100%;
  height: 482px;
  overflow: hidden;
  zoom: 1;
 }
  .flexslider .slides li {
  width: 100%;
  height: 100%;
  }
 .flex-direction-nav a {
  width: 70px;
  height: 70px;
  line-height: 99em;
  overflow: hidden;
  margin: -35px 0 0;
  display: block;
  background: url(images/ad_ctr.png) no-repeat;
  position: absolute;
  top: 50%;
  z-index: 10;
  cursor: pointer;
  opacity: 0;
  filter: alpha(opacity=0);
  -webkit-transition: all .3s ease;
  border-radius: 35px;
 }
 .flex-direction-nav .flex-next {
  background-position: 0 -70px;
  right: 0;
 }
 .flex-direction-nav .flex-prev {
  left: 0;
 }
 .flexslider:hover .flex-next {
  opacity: 0.8;
  filter: alpha(opacity=25);
 }
 .flexslider:hover .flex-prev {
  opacity: 0.8;
  filter: alpha(opacity=25);
 }
  .flexslider:hover .flex-next:hover,
  .flexslider:hover .flex-prev:hover {
  opacity: 1;
  filter: alpha(opacity=50);
  }
 .flex-control-nav {
  width: 100%;
  position: absolute;
  bottom: 10px;
  text-align: center;
 }
  .flex-control-nav li {
  margin: 0 2px;
  display: inline-block;
  zoom: 1;
  *display: inline;
  }
 .flex-control-paging li a {
  background: url(images/dot.png) no-repeat 0 -16px;
  display: block;
  height: 16px;
  overflow: hidden;
  text-indent: -99em;
  width: 16px;
  cursor: pointer;
 }
  .flex-control-paging li a.flex-active,
  .flex-control-paging li.active a {
  background-position: 0 0;
  }
 .flexslider .slides a img {
  width: 100%;
  height: 482px;
  display: block;
 }