6.html

﻿<!doctype html>
<html>
<head>
<meta charset='utf-8'>
<title></title>
<style>
#outer{
  width:200px;
  margin:10px auto;}
#tips{
  padding:5px;
  margin-top:5px;
  background:#ffefa4;
  border:1px solid #f90;
  display:none;
  }
</style>
<script>
window.onload=function(){
    var oTips=document.getElementById('tips');
    var oLabel=document.getElementsByTagName('label')[0];
    oLabel.onmouseover=function(){
        oTips.style.display="block";}
    oLabel.onmouseout=function(){
        oTips.style.display="none";}
  }

</script>
</head>
<body>
<div id="outer">
    <label><input type="checkbox" />两周内自动登录</label>
	<div id="tips">为了您的信息安全，请不要在网吧或公用电脑上使用此功能</div>
</div>
</body>
</html>