图片随滚动条上下滚动的代码

图片滚动代码 [横的]
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<div id=demo style=overflow:hidden;height:120;width:600;color:#ffffff><table align=left cellpadding=0 cellspace=0 border=0><tr><td id=demo1 valign=top>
<table border=0 cellpadding=0 cellspacing=0>
<tr>
<td><img src=jsimg/1.jpg width=150 height=100></td>
<td><img src=jsimg/2.jpg width=150 height=100></td>
<td><img src=jsimg/3.jpg width=150 height=100></td>
<td><img src=jsimg/4.jpg width=150 height=100 ></td>
<td><img src=jsimg/5.jpg width=150 height=100></td>

</tr>
</table>
</td><td id=demo2 valign=top></td></tr></table></div>
<script>
var speed=10//速度数值越大速度越慢
demo2.innerHTML=demo1.innerHTML
function M