js代码

<script src="js/jquery.min.js"  type="text/javascript"></script>
<script src="js/scrollbar.js" type="text/javascript"></script>
<script type="text/javascript">
new CusScrollBar({
  contentSelector: '.scroll_cont', //滚动内容区
  barSelector: '.scroll_bar', //滚动条
  sliderSelector: '.scroll_slider' //滚动滑块
});
</script>