调试易

<div id=demo1 style=overflow:hidden;height:100;width:90;background:#214984;color:#ffffff>
  <ul>
    <li> <a href="http://www.chinatelecom.com.cn/" target="_blank"> <img src="pic/1.jpg" width="169"  border="0" /> </a> </li>
    <li> <a href="http://www.chinamobile.com/" target="_blank"> <img src="pic/2.jpg" width="169" height="55" border="0" /> </a> </li>
    <li> <a href="http://www.chinaunicom.com.cn/" target="_blank"> <img src="pic/3.jpg" width="169"  border="0" /> </a> </li>
    <li> <a href="http://www.chinanetcom.com.cn/" target="_blank"> <img src="pic/4.jpg" width="169"  border="0" /> </a> </li>
  </ul>
</div>
<div id=demo2> </div>
<SCRIPT>
var speed=30  <!-- 速度控制 -->
demo2.innerHTML=demo1.innerHTML
function Marquee(){
if(demo2.offsetTop-demo1.scrollTop <=0)
{
demo1.scrollTop-=demo1.offsetHeight
}else{
demo1.scrollTop++
}
}
var MyMar=setInterval(Marquee,speed)
demo.onmouseover=function() {clearInterval(MyMar)}
demo.onmouseout=function() {MyMar=setInterval(Marquee,speed)}
</SCRIPT>