帮我看看这段代码，错在哪？谢谢吭，答完给分。。。

<div id="FloatDIV" align="center">
            <TABLE cellSpacing=0 cellPadding=0 width=212 border=0>
              <TBODY>
              <TR>
                <TD align=middle height=32>
<img src="images/2/index_066.gif" width="215" height="32" alt=""></TD>
  </TR>
  <tr>
  <td align=middle height=55 bgcolor="#ffffff">
  <iframe src="http://weather.liehuo.net/weather/54827.htm" width="160" height="55" frameborder="no" border="0" marginwidth="0" marginheight="0" scrolling="no"></iframe>
</td>
  </tr>
  </TBODY>
</TABLE>
</div>
<script language="javascript" type="text/javascript">
var MarginLeft = 780;   //浮动层离浏览器右侧的距离
var MarginTop = 50;     //浮动层离浏览器顶部的距离
var Width =216;        //浮动层宽度
var Heigth= 87;        //浮动层高度//设置浮动层宽、高
function Set()
{
    document.getElementById("FloatDIV").style.width = Width;
    document.getElementById("FloatDIV").style.height = Heigth;
}//实时设置浮动层的位置
function Move()
{
    document.getElementById("FloatDIV").style.top = document.documentElement.scrollTop + MarginTop;
    document.getElementById("FloatDIV").style.left = document.documentElement.clientWidth - Width - MarginLeft;
    setTimeout("Move();",100);
}Set();
Move();
</script>
问题：这是定义了一个层，然后其中有一个表格和iframe框，框中引入一个天气预报连接。下面是一段JAVA代码用来实现操纵层，实现随滚动条滚动的效果，但为什么并不滚动呢，错在哪，谢谢

解决方案 »

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//设置浮动层宽、高
function Set()
{
    document.getElementById("FloatDIV").style.width = Width;
    document.getElementById("FloatDIV").style.height = Heigth;
}
函数有问题不工作,导致后面无法执行
1.加TDT头
2.加CSS：position :absolute<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="zh-CN" lang="zh-CN"><div id="FloatDIV" align="center" style="position :absolute">
<TABLE cellSpacing=0 cellPadding=0 width=212 border=0>
  <TBODY>
  <TR>
    <TD align=middle height=32>
<img src="images/2/index_066.gif" width="215" height="32" alt=""> </TD>
  </TR>
  <tr>
  <td align=middle height=55 bgcolor="#ffffff">
  <iframe src="http://weather.liehuo.net/weather/54827.htm" width="160" height="55" frameborder="no" border="0" marginwidth="0" marginheight="0" scrolling="no"> </iframe></td>
  </tr>
  </TBODY>
</TABLE>
</div>
<script language="javascript" type="text/javascript">
var MarginLeft = 780;  //浮动层离浏览器右侧的距离
var MarginTop = 50;    //浮动层离浏览器顶部的距离
var Width =216;        //浮动层宽度
var Heigth= 87;        //浮动层高度 //设置浮动层宽、高
function Set(){
    document.getElementById("FloatDIV").style.width = Width;
    document.getElementById("FloatDIV").style.height = Heigth;
} //实时设置浮动层的位置
function Move(){
    document.getElementById("FloatDIV").style.top = document.documentElement.scrollTop + MarginTop;
    document.getElementById("FloatDIV").style.left = document.documentElement.clientWidth - Width - MarginLeft;
    setTimeout("Move();",100);
} Set();
Move();
</script>
<div style="height:999px;"></div>
function Move()
{
    document.getElementById("FloatDIV").style.top = document.documentElement.scrollTop + MarginTop;
    document.getElementById("FloatDIV").style.left = document.documentElement.clientWidth - Width + MarginLeft;
    setTimeout("Move();",100);
} FF和IE有点差别...IE先这样...
//实时设置浮动层的位置
function Move()
{
    if(document.body){
      document.getElementById("FloatDIV").style.top = document.body.scrollTop + MarginTop;
      document.getElementById("FloatDIV").style.left = document.body.clientWidth - Width - MarginLeft;
    }else{
      document.getElementById("FloatDIV").style.top = document.documentElement.scrollTop + MarginTop;
      document.getElementById("FloatDIV").style.left = document.documentElement.clientWidth - Width - MarginLeft;
    }
    setTimeout("Move();",1000);
} 改成这样IE和FF都可以了...
sorry.由于是网上拿的代码.没认真检查.
发现一个小问题同是MS IE6在 WIN2000和 WIN XP下不同:
WIN2000:document.documentElement.clientWidth 属性有效
WIN XP: document.documentElement.clientWidth 属性无效,得0,估计这导致代码不执行了,
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="zh-CN" lang="zh-CN"><div id="FloatDIV" align="center" style="position :absolute">
<TABLE cellSpacing=0 cellPadding=0 width=212 border=0>
  <TBODY>
  <TR>
    <TD align=middle height=32>
        <img src="images/2/index_066.gif" width="215" height="32" alt=""> </TD>
  </TR>
  <tr>
  <td align=middle height=55 bgcolor="#ffffff">
      <iframe src="http://weather.liehuo.net/weather/54827.htm" width="160" height="55" frameborder="no" border="0" marginwidth="0" marginheight="0" scrolling="no"> </iframe></td>
  </tr>
  </TBODY>
</TABLE>
</div>
<script language="javascript" type="text/javascript">
var MarginLeft = 780;  //浮动层离浏览器右侧的距离
var MarginTop = 50;    //浮动层离浏览器顶部的距离
var Width =216;        //浮动层宽度
var Heigth= 87;        //浮动层高度 //设置浮动层宽、高
function Set(){
    document.getElementById("FloatDIV").style.width = Width;
    document.getElementById("FloatDIV").style.height = Heigth;
} //实时设置浮动层的位置
function Move(){
    document.getElementById("FloatDIV").style.top = document.documentElement.scrollTop + MarginTop;
    document.getElementById("FloatDIV").style.left = document.documentElement.clientWidth - Width - MarginLeft;
    setTimeout("Move();",100);
} Set();
Move();
</script>
<div style="height:999px;"></div>
还是不动啊，到底是什么原因啊，是参数设错了。还是java脚本，放错位置了
不行啊，加上position这个层就会消失
不行啊，不管我怎么该，它都无动于衷
现在的代码让我改为了：<div id="FloatDIV" align="center" style="">
            <TABLE width=212 border=0 cellPadding=0 cellSpacing=0 bgcolor="#FFFFFF"  >

              <TR>
                <TD><img src="images/2/index_066.gif" width="215" height="32" alt="" /></TD>
  </TR>
  <tr>
  <td>
  <iframe src="http://weather.liehuo.net/weather/54827.htm" width="160" height="55" frameborder="no" border="0" marginwidth="0" marginheight="0" scrolling="no"></iframe> </td>
  </tr>
</TABLE>
</div>
<script language="javascript" type="text/javascript">
var MarginLeft = 200;  //浮动层离浏览器右侧的距离
var MarginTop = 50;    //浮动层离浏览器顶部的距离
var Width =200;        //浮动层宽度
var Heigth= 80;        //浮动层高度 //设置浮动层宽、高
function Set()
{
    document.getElementById("FloatDIV").style.width = Width;
    document.getElementById("FloatDIV").style.height = Heigth;
} //实时设置浮动层的位置
function Move()
{
    if(document.body){
      document.getElementById("FloatDIV").style.top = document.body.scrollTop + MarginTop;
      document.getElementById("FloatDIV").style.left = document.body.clientWidth - Width - MarginLeft;
    }else{
      document.getElementById("FloatDIV").style.top = document.documentElement.scrollTop + MarginTop;
      document.getElementById("FloatDIV").style.left = document.documentElement.clientWidth - Width - MarginLeft;
    }
    setTimeout("Move();",100);
}
Set();
Move();
</script> 究竟是怎么回事啊。
<div id="FloatDIV" align="center" style="position :absolute">
试试
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<meta http-equiv="X-UA-Compatible" content="IE=7" />
<meta name="keywords" content="">
<meta name="description" content="">
<title></title><link rel="stylesheet" rev="stylesheet" href="http://www.9191w.net/skin/xunlei2008/css/game_base.css" type="text/css" media="all" />
<link rel="stylesheet" rev="stylesheet" href="http://www.9191w.net/skin/xunlei2008/css/game_index.css" type="text/css" media="all" />
<link rel="stylesheet" rev="stylesheet" href="http://www.9191w.net/skin/xunlei2008/css/style.css" type="text/css" media="all" /></head>
<body>
<div id="FloatDIV" align="center" style="position:absolute">
            <TABLE width=212 border=0 cellPadding=0 cellSpacing=0 bgcolor="#FFFFFF"  >

              <TR>
                <TD> <img src="images/2/index_066.gif" width="215" height="32" alt="" /> </TD>
  </TR>
  <tr>
  <td>
  <iframe src="http://weather.liehuo.net/weather/54827.htm" width="160" height="55" frameborder="no" border="0" marginwidth="0" marginheight="0" scrolling="no"> </iframe> </td>
  </tr>
</TABLE>
</div>
<script language="javascript" type="text/javascript">
var MarginLeft = 200;  //浮动层离浏览器右侧的距离
var MarginTop = 50;    //浮动层离浏览器顶部的距离
var Width =200;        //浮动层宽度
var Heigth= 80;        //浮动层高度 //设置浮动层宽、高
function Set()
{
    document.getElementById("FloatDIV").style.width = Width;
    document.getElementById("FloatDIV").style.height = Heigth;
} //实时设置浮动层的位置
function Move()
{
    if(document.body){
      document.getElementById("FloatDIV").style.top = document.body.scrollTop + document.documentElement.scrollTop + MarginTop;
      document.getElementById("FloatDIV").style.left = document.body.clientWidth - Width - MarginLeft;
    }else{
      document.getElementById("FloatDIV").style.top = document.documentElement.scrollTop + MarginTop;
      document.getElementById("FloatDIV").style.left = document.documentElement.clientWidth - Width - MarginLeft;
    }
    setTimeout("Move();",100);
}
Set();
Move();
</script>
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</body>
</html>也可能是doctype的原因.试试上面的.