图片水平滚动

 <div id="demo" style="overflow: hidden; WIDTH:100%; valign:middle;">           <table cellspacing=0 cellpadding=0 align=left border=0        cellspace="0">        <tr>         <td valign="middle" id="demo1">          　　图片的位置<image src=""/><image src=""/><image src=""/>         </td>         <td id="demo2" valign="middle"></td>        </tr>       </table>               </div> <SCRIPT>     var speed=50;  document.getElementById("demo2").innerHTML= document.getElementById("demo1").innerHTML;  func