如何将导航条的子莱单横向居中显示。
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<html>
<head>
<base href="<%=basePath%>">
<title>标题</title>
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">
<!--
<link rel="stylesheet" type="text/css" href="styles.css">
-->
<style type="text/css">
<!--
* {margin:0;padding:0;border:0;} #nav {
height: 24px; list-style-type: none; padding-left:20px;
line-height:24px;background:#66CCFF;
}
#nav a {
display: block; width: 110px; text-align:center;
}
#nav a:link {
color:#CC00FF; text-decoration:none;
}
#nav a:visited {
color:#6633FF;text-decoration:none;
}
#nav a:hover {
color:#3333FF;text-decoration:none;font-weight:bold;background:#66CC66;
}
#nav li {
float:left; width: 100px;
}
#nav li ul {
line-height: 24px;
list-style-type: none;
text-align:center;
left: -888px;
width: 720px; //注意,这里一定要设置宽度;
position: absolute;
background:#0099FF;
}
#nav li ul li{
float:left;
width: 80px; //float就是子菜单横向的关键,可以继承父菜单而省略float
}
#nav li ul a{
display: block;
width:100px;
text-align:center;
padding-left:1px;
}
#nav li ul a:link {
color:#3333FF;
text-decoration:none;
}
#nav li ul a:visited {
color:#F1F1F1;
text-decoration:none;
}
#nav li ul a:hover {
color:#FFFF33;
text-decoration:none;
font-weight:normal;
background:#66CC66;
}
#nav li:hover ul {
left:1%;
}
#nav li.sfhover ul {
left:13%;
}
#content {
clear: center;
}
.STYLE9 {color: #CC00FF}
.STYLE10 {color: #FFFFFF}#Layer1 {
position:absolute;
left:70px;
top:auto;
width:914px;
height:765px;
z-index:1;
}
body {
background-color: #ffffffff;
}
-->
</style> </head>
<body>
<script language="javascript">
function menuFix() {
var sfEls = document.getElementById("nav").getElementsByTagName("li");
for (var i=0; i<sfEls.length; i++) {
sfEls[i].onmouseover=function() {
this.className+=(this.className.length>0? " ": "") + "sfhover";
}
sfEls[i].onMouseDown=function() {
this.className+=(this.className.length>0? " ": "") + "sfhover";
}
sfEls[i].onMouseUp=function() {
this.className+=(this.className.length>0? " ": "") + "sfhover";
}
sfEls[i].onmouseout=function() {
this.className=this.className.replace(new RegExp("( ?|^)sfhover\\b"),
"");
}
}
}
window.onload=menuFix;
</script><table width="830" border="1">
<tr>
<td width="15"> </td>
<td width="790" align="center" valign="middle"><img src="./images/banner.jpg" width="867" height="200"></td>
<td width="15"> </td>
</tr>
</table><div id="Layer1" style="top: 225px; left: 80px; height: 33px;"><table border="1" style="top: 197px; left: 75px; width: 900px;" height="35"><tr>
<td width="830" height="29">
<span class="STYLE9"></span>
<ul id="nav">
<li><a href="./index.jsp">首页</a></li>
<li><a href="#">莱单一</a>
<ul>
<li><a href="./jianjie.jsp">子莱单一</a></li>
<li><a href="./hoster.jsp">子莱单一</a></li>
<li><a href="./culture.jsp"> 子莱单一</a></li>
<li><a href="./International.jsp"> 子莱单一</a></li>
</ul>
</li>
<li><a href="#">莱单二</a>
<ul>
<li><a href="infomation.do?action=fenye&sign=start">子莱单二</a></li>
<li><a href="./infomation.jsp">子莱单二</a></li>
<li><a href="./sportinfo.jsp">子莱单二</a></li>
</ul>
</li>
<li class="STYLE10"><a href="#">莱单三</a>
<ul>
<li><a href="./device.jsp">子莱单三</a></li>
<li><a href="./standards.jsp ">子莱单三</a></li>
<li><a href="./round.jsp">子莱单三</a></li>
<li><a href="./equipment.jsp">子莱单三</a></li>
<li><a href="./liucheng.jsp">子莱单三</a></li>
</ul>
</li>
<li><a href="#">莱单四</a>
<ul>
<li><a href="./shili.jsp">子莱单四</a></li>
<li><a href="./shebei.jsp">子莱单四</a></li>
<li><a href="./center.jsp">子莱单四</a></li>
<li><a href="./success.jsp">子莱单四</a></li>
</ul>
</li>
<li><a href="#">莱单五</a>
<ul>
<li><a href="./inter.jsp">子莱单五</a></li>
<li><a href="./personal.jsp">子莱单五</a></li>
<li><a href="./zhaopininfo.jsp">子莱单五</a></li>
</ul>
</li>
<li><a href="#">莱单六</a>
<ul>
<li><a href="./liuyan.jsp">子莱单六</a></li>
<li><a href="./service.jsp">子莱单六</a></li>
<li><a href="./contact.jsp">子莱单六</a></li>
</ul>
</li>
</ul>
</td>
</tr>
</table>
<blockquote> </blockquote>
</div> </body>
</html>
怎么能让子莱单居中在父莱单下面
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<base href="<%=basePath%>">
<title>标题</title>
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">
<!--
<link rel="stylesheet" type="text/css" href="styles.css">
-->
<style type="text/css">
<!--
* {margin:0;padding:0;border:0;} #nav {
height: 24px; list-style-type: none; padding-left:20px;
line-height:24px;background:#66CCFF;
}
#nav a {
display: block; width: 110px; text-align:center;
}
#nav a:link {
color:#CC00FF; text-decoration:none;
}
#nav a:visited {
color:#6633FF;text-decoration:none;
}
#nav a:hover {
color:#3333FF;text-decoration:none;font-weight:bold;background:#66CC66;
}
#nav li {
float:left; width: 100px;
}
#nav li ul {
line-height: 24px;
list-style-type: none;
text-align:center;
left: -888px;
width: 720px; //注意,这里一定要设置宽度;
position: absolute;
background:#0099FF;
}
#nav li ul li{
float:left;
width: 80px; //float就是子菜单横向的关键,可以继承父菜单而省略float
}
#nav li ul a{
display: block;
width:100px;
text-align:center;
padding-left:1px;
}
#nav li ul a:link {
color:#3333FF;
text-decoration:none;
}
#nav li ul a:visited {
color:#F1F1F1;
text-decoration:none;
}
#nav li ul a:hover {
color:#FFFF33;
text-decoration:none;
font-weight:normal;
background:#66CC66;
}
#nav li:hover ul {
left:1%;
}
#nav li.sfhover ul {
left:13%;
}
#content {
clear: center;
}
.STYLE9 {color: #CC00FF}
.STYLE10 {color: #FFFFFF}#Layer1 {
position:absolute;
left:70px;
top:auto;
width:914px;
height:765px;
z-index:1;
}
body {
background-color: #ffffffff;
}
-->
</style> </head>
<body>
<script language="javascript">
function menuFix() {
var sfEls = document.getElementById("nav").getElementsByTagName("li");
for (var i=0; i<sfEls.length; i++) {
sfEls[i].onmouseover=function() {
this.className+=(this.className.length>0? " ": "") + "sfhover";
}
sfEls[i].onMouseDown=function() {
this.className+=(this.className.length>0? " ": "") + "sfhover";
}
sfEls[i].onMouseUp=function() {
this.className+=(this.className.length>0? " ": "") + "sfhover";
}
sfEls[i].onmouseout=function() {
this.className=this.className.replace(new RegExp("( ?|^)sfhover\\b"),
"");
}
}
}
window.onload=menuFix;
</script><table width="830" border="1">
<tr>
<td width="15"> </td>
<td width="790" align="center" valign="middle"><img src="./images/banner.jpg" width="867" height="200"></td>
<td width="15"> </td>
</tr>
</table><div id="Layer1" style="top: 225px; left: 80px; height: 33px;"><table border="1" style="top: 197px; left: 75px; width: 900px;" height="35"><tr>
<td width="830" height="29">
<span class="STYLE9"></span>
<ul id="nav">
<li><a href="./index.jsp">首页</a></li>
<li><a href="#">莱单一</a>
<ul>
<li><a href="./jianjie.jsp">子莱单一</a></li>
<li><a href="./hoster.jsp">子莱单一</a></li>
<li><a href="./culture.jsp"> 子莱单一</a></li>
<li><a href="./International.jsp"> 子莱单一</a></li>
</ul>
</li>
<li><a href="#">莱单二</a>
<ul>
<li><a href="infomation.do?action=fenye&sign=start">子莱单二</a></li>
<li><a href="./infomation.jsp">子莱单二</a></li>
<li><a href="./sportinfo.jsp">子莱单二</a></li>
</ul>
</li>
<li class="STYLE10"><a href="#">莱单三</a>
<ul>
<li><a href="./device.jsp">子莱单三</a></li>
<li><a href="./standards.jsp ">子莱单三</a></li>
<li><a href="./round.jsp">子莱单三</a></li>
<li><a href="./equipment.jsp">子莱单三</a></li>
<li><a href="./liucheng.jsp">子莱单三</a></li>
</ul>
</li>
<li><a href="#">莱单四</a>
<ul>
<li><a href="./shili.jsp">子莱单四</a></li>
<li><a href="./shebei.jsp">子莱单四</a></li>
<li><a href="./center.jsp">子莱单四</a></li>
<li><a href="./success.jsp">子莱单四</a></li>
</ul>
</li>
<li><a href="#">莱单五</a>
<ul>
<li><a href="./inter.jsp">子莱单五</a></li>
<li><a href="./personal.jsp">子莱单五</a></li>
<li><a href="./zhaopininfo.jsp">子莱单五</a></li>
</ul>
</li>
<li><a href="#">莱单六</a>
<ul>
<li><a href="./liuyan.jsp">子莱单六</a></li>
<li><a href="./service.jsp">子莱单六</a></li>
<li><a href="./contact.jsp">子莱单六</a></li>
</ul>
</li>
</ul>
</td>
</tr>
</table>
<blockquote> </blockquote>
</div> </body>
</html>
怎么能让子莱单居中在父莱单下面
<html>
<head>
<base href=" <%=basePath%>">
<title>css</title>
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">
<!--
<link rel="stylesheet" type="text/css" href="styles.css">
-->
<style type="text/css">
<!--
* {margin:0;padding:0;border:0;} #nav {
height: 24px; list-style-type: none; padding-left:20px;
line-height:24px;background:#66CCFF;
}
#nav a {
display: block; width: 110px; text-align:center;
}
#nav a:link {
color:#CC00FF; text-decoration:none;
}
#nav a:visited {
color:#6633FF;text-decoration:none;
}
#nav a:hover {
color:#3333FF;text-decoration:none;font-weight:bold;background:#66CC66;
}
#nav li {
float:left; width: 100px;
}
#nav li ul {
line-height: 24px;
list-style-type: none;
text-align:center;
left: -888px;
width: 720px; //注意,这里一定要设置宽度;
position: absolute;
background:#0099FF;
}
#nav li ul li{
float:left;
width: 80px; //float就是子菜单横向的关键,可以继承父菜单而省略float
}
#nav li ul a{
display: block;
width:100px;
text-align:center;
padding-left:1px;
}
#nav li ul a:link {
color:#3333FF;
text-decoration:none;
}
#nav li ul a:visited {
color:#F1F1F1;
text-decoration:none;
}
#nav li ul a:hover {
color:#FFFF33;
text-decoration:none;
font-weight:normal;
background:#66CC66;
}
#nav li:hover ul {
left:1%;
}
#nav li.sfhover ul {
left:13%;
}
#content {
clear: center;
}
.STYLE9 {color: #CC00FF}
.STYLE10 {color: #FFFFFF} #Layer1 {
position:absolute;
left:70px;
top:auto;
width:914px;
height:765px;
z-index:1;
}
body {
background-color: #ffffffff;
}
-->
</style> </head>
<body>
<script language="javascript">
function setP(_this,_left){
var obj=_this.getElementsByTagName("ul")
if (obj.length>0)obj[0].style.left=_left+"px" }
function menuFix() { var sfEls = document.getElementById("nav").getElementsByTagName("li"); for (var i=0; i <sfEls.length; i++) {
sfEls[i].onmouseover=function() {setP(this,60)}
sfEls[i].onMouseDown=function() {setP(this,60)}
sfEls[i].onMouseUp=function() {setP(this,60)}
sfEls[i].onmouseout=function() {setP(this,-1000)}
}
}
window.onload=menuFix;
</script> <table width="830" border="1">
<tr>
<td width="15"> </td>
<td width="790" align="center" valign="middle"> <img src="./images/banner.jpg" width="867" height="200"> </td>
<td width="15"> </td>
</tr>
</table> <div id="Layer1" style="top: 225px; left: 80px; height: 33px;"> <table border="1" style="top: 197px; left: 75px; width: 900px;" height="35"> <tr>
<td width="830" height="29">
<span class="STYLE9"> </span>
<ul id="nav">
<li> <a href="./index.jsp">首页 </a> </li>
<li> <a href="#">莱单一 </a>
<ul>
<li> <a href="./jianjie.jsp">子莱单一 </a> </li>
<li> <a href="./hoster.jsp">子莱单一 </a> </li>
<li> <a href="./culture.jsp"> 子莱单一 </a> </li>
<li> <a href="./International.jsp"> 子莱单一 </a> </li>
</ul>
</li>
<li> <a href="#">莱单二 </a>
<ul>
<li> <a href="infomation.do?action=fenye&sign=start">子莱单二 </a> </li>
<li> <a href="./infomation.jsp">子莱单二 </a> </li>
<li> <a href="./sportinfo.jsp">子莱单二 </a> </li>
</ul>
</li>
<li class="STYLE10"> <a href="#">莱单三 </a>
<ul>
<li> <a href="./device.jsp">子莱单三 </a> </li>
<li> <a href="./standards.jsp ">子莱单三 </a> </li>
<li> <a href="./round.jsp">子莱单三 </a> </li>
<li> <a href="./equipment.jsp">子莱单三 </a> </li>
<li> <a href="./liucheng.jsp">子莱单三 </a> </li>
</ul>
</li>
<li> <a href="#">莱单四 </a>
<ul>
<li> <a href="./shili.jsp">子莱单四 </a> </li>
<li> <a href="./shebei.jsp">子莱单四 </a> </li>
<li> <a href="./center.jsp">子莱单四 </a> </li>
<li> <a href="./success.jsp">子莱单四 </a> </li>
</ul>
</li>
<li> <a href="#">莱单五 </a>
<ul>
<li> <a href="./inter.jsp">子莱单五 </a> </li>
<li> <a href="./personal.jsp">子莱单五 </a> </li>
<li> <a href="./zhaopininfo.jsp">子莱单五 </a> </li>
</ul>
</li>
<li> <a href="#">莱单六 </a>
<ul>
<li> <a href="./liuyan.jsp">子莱单六 </a> </li>
<li> <a href="./service.jsp">子莱单六 </a> </li>
<li> <a href="./contact.jsp">子莱单六 </a> </li>
</ul>
</li>
</ul>
</td>
</tr>
</table>
<blockquote> </blockquote>
</div> </body>
</html>