浮动广告就是随着鼠标的滚动而上线滚动的广告，代码很简单，很好实现：
<!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" />
<title>无标题文档</title>
<meta http-equiv="x-ua-compatible" content="IE=EmulateIE7" />
<script type="text/livescript">
var a=10;
function aa()
{
document.getElementById("bb").style.pixelTop=a+document.documentElement.scrollTop;
}
window.onscroll=aa;
</script>
</head>
<body>
<div id="bb" style="width:93px; height:80px; border:1px solid red; position:absolute; z-index:2">
<img src="link1.gif" />
</div>
</body>
</html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>无标题文档</title>
<meta http-equiv="x-ua-compatible" content="IE=EmulateIE7" />
<script type="text/livescript">
var a=10;
function aa()
{
document.getElementById("bb").style.pixelTop=a+document.documentElement.scrollTop;
}
window.onscroll=aa;
</script>
</head>
<body>
<div id="bb" style="width:93px; height:80px; border:1px solid red; position:absolute; z-index:2">
<img src="link1.gif" />
</div>
</body>
</html>