求解决这个问题

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<!-- saved from url=(0014)about:internet -->
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>home page.jpg</title>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<style type="text/css">
td img {display: block;}#apDiv1 {
position:absolute;
width:1025px;
height:362px;
z-index:1;
top: 138px;
}#demo {
background: #FFF;
overflow:hidden;
border: 1px dashed #CCC;
width: 1024px;
}
#demo img {
border: 3px solid #F2F2F2;
}
#indemo {
float: left;
width: 800%;
}
#demo1 {
float: left;
}
#demo2 {
float: left;
}
-->
</style>
<!--Fireworks 8 Dreamweaver 8 target.  Created Wed Mar 16 20:24:56 GMT+0000 2011-->
</head>
<body bgcolor="#ffffff">
<table border="0" cellpadding="0" cellspacing="0" width="1024">
<!-- fwtable fwsrc="home page.png" fwbase="home page.jpg" fwstyle="Dreamweaver" fwdocid = "339783636" fwnested="0" -->
  <tr>
   <td><img src="images/spacer.gif" width="1024" height="1" border="0" alt="" /></td>
   <td><img src="images/spacer.gif" width="1" height="1" border="0" alt="" /></td>
  </tr>  <tr>
   <td><img name="homepage_r1_c1" src="images/home%20page_r1_c1.jpg" width="1024" height="118" border="0" id="homepage_r1_c1" usemap="#m_home20page_r1_c1" alt="" /></td>
   <td><img src="images/spacer.gif" width="1" height="118" border="0" alt="" /></td>
  </tr>
  <tr>
   <td><div id="demo">
<div id="indemo">
<div id="demo1">
<a href="#"><img src="images/1.jpg" border="0" /></a>
<a href="#"><img src="images/2.jpg" border="0" /></a>
<a href="#"><img src="images/3.jpg" border="0" /></a>
</div>
<div id="demo2"></div>
</div>
</div>
<script>
<!--
var speed=100;
var tab=document.getElementById("demo");
var tab1=document.getElementById("demo1");
var tab2=document.getElementById("demo2");
tab2.innerHTML=tab1.innerHTML;
function Marquee(){
if(tab2.offsetWidth-tab.scrollLeft<=0)
tab.scrollLeft-=tab1.offsetWidth
else{
tab.scrollLeft++;
}
}
var MyMar=setInterval(Marquee,speed);
tab.onmouseover=function() {clearInterval(MyMar)};
tab.onmouseout=function() {MyMar=setInterval(Marquee,speed)};
-->
</script><td>实现一个3个图片滚动的效果，但是三张图片却竖着落在一起了，谁帮忙解决一下啊