其实用绝对定位也可以实现高度和宽度的自适应，从而出现自适应大小的区域及滚动条。
<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="NewMarking.aspx.cs" Inherits="FirsteLite.OMS.Checking.NewMarking" %> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" style="height:100%;">
<head runat="server">
<title>网上在线阅卷</title>
<style type="text/css">
*
{
margin:0px;
padding:0px;
border-width:0px;
font-size:12px;
} ul
{
list-style-type:none;
} #toolbar li
{
padding:2px;
text-align:center;
cursor:pointer;
} #toolbar li:hover
{
background:url(images/_down.png) no-repeat center center;
} </style>
<script type="text/javascript">
window.onload = function () {
document.getElementById("testImage").src = "../modelimage/11111111111601041701000301.GIF";
}
</script>
</head>
<body style="height:100%;">
<form id="form1" runat="server" style="width:100%;height:100%;">
<div style="width:100%; height:100%; position:relative;">
<div id="header" style="position:absolute;left:0px;top:0px;height:40px;width:100%;background-color:#2964A0;color:White;vertical-align:middle;">
banner<img alt="logo" src="data:images/lg.png" style="float:right;" />
</div>
<div id="left" style="position:absolute;left:0px;top:40px;bottom:25px;width:35px;background-color:#F3F4F6;border-right:1px solid gray;
vertical-align:top;overflow:hidden;">
<ul id="toolbar">
<li><input type="button" title="评语" style="background-image:url('images/icon1.png');
border:1px solid transparent;background-color:transparent;width:29px;height:20px;cursor:hand;" /></li>
<li><input type="button" title="对号" style="background-image:url('images/icon4.png');
border:1px solid transparent;background-color:transparent;width:29px;height:23px;cursor:hand;" /></li>
<li><input type="button" title="半对" style="background-image:url('images/icon3.png');
border:1px solid transparent;background-color:transparent;width:28px;height:28px;cursor:hand;" /></li>
<li><input type="button" title="错号" style="background-image:url('images/icon2.png');
border:1px solid transparent;background-color:transparent;width:29px;height:23px;cursor:hand;" /></li>
<li><input type="button" title="快捷打分" style="background-image:url('images/icon5.png');
border:1px solid transparent;background-color:transparent;width:29px;height:25px;cursor:hand;" /></li>
<li style="border-top:1px solid gray; height:1px; line-height:1px; margin:5px 0px;padding:0px;"></li>
<li><input type="button" title="优秀试题" style="background-image:url('images/icon6.png');
border:1px solid transparent;background-color:transparent;width:29px;height:24px;cursor:hand;" /></li>
<li><input type="button" title="典型试题" style="background-image:url('images/icon7.png');
border:1px solid transparent;background-color:transparent;width:29px;height:24px;cursor:hand;" /></li>
<li><input type="button" title="异常答卷" style="background-image:url('images/icon8.png');
border:1px solid transparent;background-color:transparent;width:29px;height:24px;cursor:hand;" /></li>
<li><input type="button" title="答错位置" style="background-image:url('images/icon10.png');
border:1px solid transparent;background-color:transparent;width:29px;height:24px;cursor:hand;" /></li>
<li><input type="button" title="参考答卷" style="background-image:url('images/icon9.png');
border:1px solid transparent;background-color:transparent;width:29px;height:24px;cursor:hand;" /></li>
<li style="border-top:1px solid gray; height:1px; line-height:1px; margin:5px 0px;padding:0px;"></li>
<li><input type="button" title="默认大小" style="background-image:url('images/icon15.png');
border:1px solid transparent;background-color:transparent;width:28px;height:21px;cursor:hand;" /></li>
<li><input type="button" title="放大" style="background-image:url('images/icon13.png');
border:1px solid transparent;background-color:transparent;width:28px;height:21px;cursor:hand;" /></li>
<li><input type="button" title="缩小" style="background-image:url('images/icon14.png');
border:1px solid transparent;background-color:transparent;width:28px;height:21px;cursor:hand;" /></li>
<li><input type="button" title="前景色设置" style="background-image:url('images/icon22.png');
border:1px solid transparent;background-color:transparent;width:28px;height:25px;cursor:hand;" /></li>
<li><input type="button" title="背景色设置" style="background-image:url('images/icon21.png');
border:1px solid transparent;background-color:transparent;width:28px;height:25px;cursor:hand;" /></li>
<li style="display:none;"><input type="button" title="右旋转" style="background-image:url('images/icon23.png');
border:1px solid transparent;background-color:transparent;width:28px;height:25px;cursor:hand;" /></li>
<li style="display:none;"><input type="button" title="左旋转" style="background-image:url('images/icon24.png');
border:1px solid transparent;background-color:transparent;width:28px;height:25px;cursor:hand;" /></li>
<li><input type="button" title="等高" style="background-image:url('images/icon25.png');
border:1px solid transparent;background-color:transparent;width:28px;height:25px;cursor:hand;" /></li>
<li><input type="button" title="等宽" style="background-image:url('images/icon26.png');
border:1px solid transparent;background-color:transparent;width:28px;height:25px;cursor:hand;" /></li>
</ul>
</div>
<div id="middle" style="position:absolute;left:36px;top:40px;bottom:25px;right:201px;overflow:scroll;">
<img alt="question" id="testImage" src="" />
</div>
<div id="right" style="position:absolute;top:40px;bottom:25px;right:0px;width:200px;border-left:1px solid gray;overflow:hidden;">
<div>right</div>
</div>
<div id="footer" style="position:absolute;bottom:0px;height:25px;width:100%;background-color:#356BA4;">
<div style="height:25px; line-height:25px; width:100%;color:White;vertical-align:middle;">
<span id="lbl_UserName">用户：测试01[160001]</span> <span id="lbl_Number">
评卷量：119</span> <span id="lbl_ExamNum">考号：********</span>
<span id="lbl_Student">学生：********</span> <span id="lbl_SecretNum">
密号：676966996560</span>
</div>
</div>
</div>
</form>
</body>
</html>