JavaScript实现图片跟随鼠标移动效果的方法

<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>图片跟着鼠标走</title>
<script type="text/javascript">
function DivFlying() {
  var div = document.getElementById("divFly");
  if (!div) {
 return;
  }
  var intX = window.event.clientX;
  var intY = window.event.clientY;
  div.style.left = intX + "px";
  div.style.top = intY + "px";
}
document.onmousemove = DivFlying;
</script>
</head>
<body>
<div id="divFly" style="position:absolute;">
<img src="fly.gif" /><br />
低调的跟着鼠标飘过~~
</div>
</body>
</html>