如何触发一个事件后让marquee再走一次

Question

<marquee id="dd" scrollamount="6" loop="1" onfinish="this.loop=1;" scrolldelay="0"  behavior="slide" direction="up" height="130" width="96%">
          sdfhdsghfd</marquee>
<a href="JavaScript:op();">sgsfgfsdg</a>
<script>
function op()
{
    dd.innerHTML=\"<marquee id="dd" scrollamount="6" loop="1" onfinish="this.loop=1;" scrolldelay="0"  behavior="slide" direction="up" height="130" width="96%">
          sdfhdsghfd</marquee>\";
}
</script>