鼠标经过显示二维码

<style>

.erweima{ position:relative; cursor:pointer; margin-left:300px;}

.erweima span{ display:none; border:#EEE solid 1px;position:absolute; right:0; top:25px; z-index:999;}

.erweima span img{ width:220px; height:220px; z-index:1000;}

.erweima:hover span{ display:block;}

</style>

<i class="erweima"> 手机版 <span><img src="{$GetInstallDir}images/weixin.png" /></span> </i>