<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>对联广告</title>
<style>
#leftFloat{
200px;
height: 280px;
background-color: red;
position: fixed;
left: 0px;
/*IE6兼容*/
_position:absolute;
_top:expression(document.documentElement.scrollTop+(document.documentElement.clientHeight-this.offsetHeigh)/2);
}
#rightFloat{
200px;
height: 280px;
background-color: red;
position: fixed;
right: 0px;
_position:absolute;
_top:expression(document.documentElement.scrollTop+(document.documentElement.clientHeight-this.offsetHeigh)/2);
}
.close{
height: 20px;
200px;
background-color: pink;
position: absolute;
bottom: 0px;
left:0px;
text-align: center;
font-size: 20px;
}
.close a{
text-decoration: none;
color: #000;
}
</style>
<script>
window.onload = function (){
var leftdiv = document.getElementById('leftFloat');
var rightdiv = document.getElementById("rightFloat");
var t = (document.documentElement.clientHeight-leftdiv.offsetHeight)/3 + 'px';
leftdiv.style.top = t;
rightdiv.style.top = t;
}
function close(){
document.getElementById('leftFloat').style.display='none';
document.getElementById('rightFloat').style.display='none';
}
</script>
</head>
<body>
<div id="leftFloat">
<div class="close"><a href="javascript:close()">关闭</a></div>
</div>
<div id="rightFloat">
<div class="close"><a href="javascript:close()">关闭</a></div>
</div>
</body>
</html>