index.jsp代碼如下：
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>首頁面</title>
<link rel="stylesheet" href="/xiaoneiwang/css/common.css" type="text/css"/>
<link rel="stylesheet" href="/xiaoneiwang/css/index.css" type="text/css"/>
</head>
<body>
<!-- 引入多頁面 -->
<jsp:include page="head.jsp"/>
</body>
</html>head.jsp代碼如下：
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<link rel="stylesheet" href="/xiaoneiwang/css/head.css" type="text/css" />
<script type="text/javascript">
<!--
function changeBG(o){
o.style.backgroundColor="#5C75AA";
}
function changeBG2(o){
o.style.backgroundColor="";
}
-->
</script>
</head>
<body>
<div class="head1">
<img class="img1" src="/xiaoneiwang/images/front/top1.gif" />
<img class="img2" src="/xiaoneiwang/images/front/top2.jpg" />
<img src="/xiaoneiwang/images/front/xnw3.jpg" style="float: left;"/>
<ul class="navi1">
<li onmouseover="changeBG(this)" onmouseout="changeBG2(this)"><a class="anavi" href="/xiaoneinew/register.do?flag=regUI">註冊</a></li>
<li onmouseover="changeBG(this)" onmouseout="changeBG2(this)"><a class="anavi" href="#">設爲首頁</a></li>
<li onmouseover="changeBG(this)" onmouseout="changeBG2(this)"><a class="anavi" href="#">加入收藏</a></li>
<li onmouseover="changeBG(this)" onmouseout="changeBG2(this)"><a class="anavi" href="#">幫助</a></li>
</ul>
</div>
</body>
</html>head.css代碼如下：
.head1{
height:101px;
width:1005px;
background-color: #3B5888;
margin:0 auto;/*該句爲了使居中*/
}
.head1 .img1{
width: 713px;
float: left;
}
.head1 .img2{
width: 280px;
float: left;
margin-left: 6px;
}
.navi1{
float:right;
}
.navi1 li{
float:left;
color:#C3CDDF;
height: 33px;
width: 55px;
line-height: 33px;
text-align: center;
}common.css代碼如下：
body{
font-size: 12px;
margin: 0;
}運行起來後，head.jsp在index.jsp中無法居中，只是左面對齊瀏覽器。解決方案：
在index.jsp中將頭部的
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">修改爲
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">即可完美解決。