js 页面左右两侧居中广告代码

<meta http-equiv="content-type" content="text/html; charset=utf-8"> <title>无标题文档</title> <style> #left{ width:200px;height:450px; position:absolute; left:0px; background:red; border:1px #000 solid} #right{width:200px;height:450px; position:absolute; right:0px; background:blue; border:1px #000 solid} #x,#y{ width:10px; height:10px;position:absolute;right:0px; top:0px;} </style> <div id="left"> <div id="x">x</div> </div> <div id="right"> <div id="y">x</div> </div>
[ctrl+a 全选 注:如需引入外部js需刷新才能执行]