如何在asp页面中 浮动出一个框来，询问是否要将本站加为首页。类似于sina前段时间的显示

<html xmlns:rdl><head><meta http-equiv="Content-Type" content="text/html; charset=gb2312"><title>主页的检测与设置</title><style>body
{
margin:0px;
padding:16px;background:#FFFFFF;
overflow:auto;
}body,table,input,select,textarea,a
{
font-family:verdana,tahoma,arial;font-size:11px;
color:#000000;
word-break:break-all;}table,img
{
border:0px;
}a
{
text-decoration:none;
color:#003399;
}a:hover
{
color:#000000;
text-decoration:underline;
}
#id_div3
{
padding-top:8px;
border-top:1px solid #000000;
line-height:15px;
}#id_span3
{
font-size:10px;
font-family:tahoma;
}@media all 
{
rdl\:homepage {behavior:url(#default#homepage);}
}#idCodeDiv
{
width:100%;
padding:4px;
font-family:verdana,tahoma;
margin:12px 0px 0px 0px;
background-color:#EEEEEE;
}
</style>
<script>var oHomePage,oCodeDiv,oURL;
var sHomePage;function rdl_Verify()
{

var sHomePage=oURL.value; var bIs=oHomePage.isHomePage(sHomePage);

with (oCodeDiv)
{
if (bIs) 
{
innerText=sHomePage+"是您的默认主页"; 
innerText.fontcolor("red");
}
else 
{
innerText=sHomePage+"不是您的默认主页";
}
}

}function rdl_Set()
{

var sHomePage=oURL.value;

oHomePage.setHomePage(sHomePage);

}
function window.onload()
{

oHomePage=document.all("idHomePage");

oCodeDiv=document.all("idCodeDiv");

oURL=document.all("idURL");

}</script>
</head><body><rdl:homepage id="idHomePage" /><table><tr>
<td>
<input type=text size=30 value="http://www.google.com" id=idURL>
</td>
<td>
<input type=button value=" 检测 " onclick="rdl_Verify();"></td>
<td><input type=button value=" 设置 " onclick="rdl_Set();"></td></tr></table><br>
<br>
<div id=idCodeDiv>请确认输入框内的url地址然后点击「检测」按钮。</div></body>
</html>