jquery新闻上下滚动

<style>* {
    padding: 0px;
    margin: 0px;
}li{ list-style-type: none; }</style><script type="text/javascript" src="https://lizhenqiu.com/templates/default/jquery.min.js"></script>
<div id="broadcast" class="bar" name="giftactive">
  <div style="float:left"><strong>间隔滚动效果：</strong></div>
  <div id="demo" style="overflow:hidden;height:22px;line-height:22px;">
    <ul class="mingdan" id="holder">
      <li><a href="#" target="_blank">aaaaaa</a></li>
      <li><a href="#" target="_blank">bbbbbb</a></li>
      <li><a href="#" target="_blank">cccccc</a></li>
      <li><a href="#" target="_blank">dddddd</a></li>
      <li><a href="#" target="_blank">eeeeee</a></li>
    </ul>
  </div>
</div>
<script>
function AutoScroll(obj) {
    $(obj).find("ul:first").animate({
        marginTop: "-22px"
    },
    500,
    function() {
        $(this).css({
            marginTop: "0px"
        }).find("li:first").appendTo(this);
    });
}
$(document).ready(function() {
    setInterval('AutoScroll("#demo")', 1000)
});
</scritpt>