<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<style>
#div1 {width:100px height:100px background:red position:absolute}
</style>
<meta http-equiv="Content-Type" content="text/html charset=utf-8" />
<title>无标题文档</title>
<script>
document.onmousemove=function (ev)
{
var oEvent=ev||event
var oDiv=document.getElementById('div1')
oDiv.style.left=oEvent.clientX+'px'
oDiv.style.top=oEvent.clientY+'px'
}
</script>
</head>
<body>
<div id="div1">
</div>
</body>
</html>