<!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>测试</title>
<style type="text/css">
.online-service { position:fixed; top:220px; right:0px; z-index:99; }
.online-service .service-tips { display:block; cursor:pointer; }
.online-service.hover .service-tips { display:none; }
.net{
width:100;
height:10000px;
}
</style>
</head>
<body>
<div class="nei"></div>
<div class="online-service">
<div class="service-tips">
<a href="tencent://message/?uin=2991236894&Site=在线客服&Menu=yes" target="_blank">
<img alt="QQ" src="http://wpa.qq.com/pa?p=1:2991236894:1" border="0">
</a>
</div>
</div>
</body>
</html>
效果：
