<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
<style type="text/css">
#box1{
width: 100px;
height: 100px;
background-color: #bbffaa;
position: absolute;
}
</style>
<script type="text/javascript">
window.onload = function (){
var box1 = document.getElementById("box1");
document.onmousemove = function (event){
event = event || window.event
var left = event.pageX;
var top = event.pageY;
box1.style.left = left + "px";
box1.style.top = top + "px";
}
}
</script>
</head>
<body>
<div id="box1"></div>
</body>
</html>
