JavaScript实现类似QQ头像悬停弹出提示框

<!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=utf-8" />
<title>简单的类似QQ头像的弹出效果</title>
<style type="text/css">
#oimg{float:left; margin:10px}
#msg{border:solid; width:300px;height:250px;display:none;float:left;padding:10px}
</style>
</head>
<body>
<img id="oimg" src="images/show.jpg" />
<div id="msg">啦啦啦啦。。。。。</div>
<script type="text/javascript">
var oid=document.getElementById('oimg');
var omsg=document.getElementById('msg');
var timer=null;
oid.onmousemove=showMsg;
oid.onmouseout=hideMsg;
omsg.onmouseout=hideMsg;
omsg.onmousemove=function(){clearTimeout(timer)};
function showMsg(){if(timer){clearTimeout(timer)}omsg.style.display='block';}
function hideMsg(){timer=setTimeout(function(){omsg.style.display='none';},500);}
</script>
</body>
</html>