<body style="margin: 0pt auto;">
<div id="header" style="background-color:#000033; width:auto; height:70px"></div>
<div id="body" style="background-color: rgb(153, 153, 153); width: 100%; position: absolute; margin-right: 300px; margin-left: -300px; height: 76%;"></div>
<div id="nav" style="position: absolute; left: 1066px; width: 300px; top: 70px; height: 76%; background-color: rgb(221, 34, 221);"></div>
<div id="footer" style="background-color:#000033; width:100%; height:70px; position:absolute; bottom:0"></div>
</body>
*全屏视图*
http://i.stack.imgur.com/VukrD.jpg
当我们处于全屏模式时如何删除空白?像正常视图如下: