不间断往上滚动

 1<div id=demo style=overflow:hidden;height:139;width:232;background:#f4f4f4;color:#ffffff><div id=demo1>
 2 <img src="http://www.makewing.com/lanren/jscode/js-0063/images/01.jpg">
 3 <img src="http://www.makewing.com/lanren/jscode/js-0063/images/02.jpg">
 4 <img src="http://www.makewing.com/lanren/jscode/js-0063/images/03.jpg">
 5 <img src="http://www.makewing.com/lanren/jscode/js-0063/images/04.jpg">
 6 <img src="http://www.makewing.com/lanren/jscode/js-0063/images/05.jpg">
 7</div>
 8<div id=demo2></div>
 9</div>
10   <script>
11   var speed=50
12   demo2.innerHTML=demo1.innerHTML
13   function Marquee(){
14   if(demo2.offsetTop-demo.scrollTop<=0)
15   demo.scrollTop-=demo1.offsetHeight
16   else{
17   demo.scrollTop++
18   }
19   }
20   var MyMar=setInterval(Marquee,speed)
21   demo.onmouseover=function() {clearInterval(MyMar)}
22   demo.onmouseout=function() {MyMar=setInterval(Marquee,speed)}
23   </script>