怎么才能使这个下拉菜单在正下方显示出来,现在是往右移动了40px左右。<!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" lang="zh-CN">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>CSS下拉菜单演示</title>
<style type="text/css">
<!--
.dropdownall{margin:0;padding:0;border:0;}
body {
font-family: arial, 宋体, serif;
font-size:12px;
}
#dropdown {
line-height: 24px; list-style-type: none; background:#666;
}
#dropdown a {
display: block; width: 108px; text-align:center;
}
#dropdown a:link {
color:#666; text-decoration:none;
}
#dropdown a:visited {
color:#666;text-decoration:none;
}
#dropdown a:hover {
color:#FFF;text-decoration:none;font-weight:bold;
}
#dropdown li {
float: left; width: 108px; background:#CCC;
}
#dropdown li a:hover{
background:#999;
}
#dropdown li ul {
line-height: 27px; list-style-type: none;text-align:left;
left: -800em; width: 180px; position: absolute;
}
#dropdown li ul li{
float: left; width: 108px;
background: #F6F6F6;
}
#dropdown li ul a{ wedisplay: block; width: 108px;text-align:center;
}
#dropdown li ul a:link {
color:#666; text-decoration:none;
}
#dropdown li ul a:visited {
color:#666;text-decoration:none;
}
#dropdown li ul a:hover {
color:#F3F3F3;text-decoration:none;font-weight:normal;
background:#C00;
}
#dropdown li:hover ul {
left: auto;
}
#dropdown li.sfhover ul {
left: auto;
}
#content {
clear: left;
}
-->
</style>
<script type=text/javascript>
<!--//--><![CDATA[//><!--
function menuFix() {
var sfEls = document.getElementById("dropdown").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>
</head>
<body>
<div class="dropdownall">
<ul id="dropdown">
<li><a href="#">公司首页</a> </li>
<li><a href="#">企业概况</a>
<ul>
<li><a href="#">企业文化</a></li>
<li><a href="#">装置概览</a></li>
</ul>
</li>
<li><a href="#">企业管理</a>
<ul>
<li><a href="#">规章制度</a></li>
</ul>
</li>
<li><a href="#">文件管理</a>
<ul>
<li><a href="#">总部文件</a></li>
<li><a href="#">公司文件</a></li>
</ul>
</li>
<li><a href="#">党群工作</a>
</li>
<li><a href="#">公司大事记</a>
<ul>
<li><a href="#">亲切关怀</a></li>
</ul>
</li>
<li><a href="#">政策法规</a>
</li>
<li><a href="#">企业部门</a>
<ul>
<li><a href="#">办公室</a></li>
<li><a href="#">综合计划处</a></li>
<li><a href="#">生产处</a></li>
<li><a href="#">机动处</a></li>
<li><a href="#">人事处</a></li>
<li><a href="#">安全环保处</a></li>
<li><a href="#">销售处</a></li>
<li><a href="#">财务处</a></li>
<li><a href="#">物资供应处</a></li>
</ul>
</li>
<li><a href="#">应用系统</a>
<ul>
<li><a href="#">信息系统</a></li>
<li><a href="#">用户发布系统</a></li>
<li><a href="#">实时数据库系统</a></li>
<li><a href="#">LIMS系统</a></li>
<li><a href="#">腐蚀监测系统</a></li>
<li><a href="#">大型机组状态监测</a></li>
<li><a href="#">TBM系统</a></li>
<li><a href="#">生产安全检查系统</a></li>
</ul>
</li>
</ul>
</div>
</body>
</html>
<html xmlns="http://www.w3.org/1999/xhtml" lang="zh-CN">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>CSS下拉菜单演示</title>
<style type="text/css">
<!--
.dropdownall{margin:0;padding:0;border:0;}
body {
font-family: arial, 宋体, serif;
font-size:12px;
}
#dropdown {
line-height: 24px; list-style-type: none; background:#666;
}
#dropdown a {
display: block; width: 108px; text-align:center;
}
#dropdown a:link {
color:#666; text-decoration:none;
}
#dropdown a:visited {
color:#666;text-decoration:none;
}
#dropdown a:hover {
color:#FFF;text-decoration:none;font-weight:bold;
}
#dropdown li {
float: left; width: 108px; background:#CCC;
}
#dropdown li a:hover{
background:#999;
}
#dropdown li ul {
line-height: 27px; list-style-type: none;text-align:left;
left: -800em; width: 180px; position: absolute;
}
#dropdown li ul li{
float: left; width: 108px;
background: #F6F6F6;
}
#dropdown li ul a{ wedisplay: block; width: 108px;text-align:center;
}
#dropdown li ul a:link {
color:#666; text-decoration:none;
}
#dropdown li ul a:visited {
color:#666;text-decoration:none;
}
#dropdown li ul a:hover {
color:#F3F3F3;text-decoration:none;font-weight:normal;
background:#C00;
}
#dropdown li:hover ul {
left: auto;
}
#dropdown li.sfhover ul {
left: auto;
}
#content {
clear: left;
}
-->
</style>
<script type=text/javascript>
<!--//--><![CDATA[//><!--
function menuFix() {
var sfEls = document.getElementById("dropdown").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>
</head>
<body>
<div class="dropdownall">
<ul id="dropdown">
<li><a href="#">公司首页</a> </li>
<li><a href="#">企业概况</a>
<ul>
<li><a href="#">企业文化</a></li>
<li><a href="#">装置概览</a></li>
</ul>
</li>
<li><a href="#">企业管理</a>
<ul>
<li><a href="#">规章制度</a></li>
</ul>
</li>
<li><a href="#">文件管理</a>
<ul>
<li><a href="#">总部文件</a></li>
<li><a href="#">公司文件</a></li>
</ul>
</li>
<li><a href="#">党群工作</a>
</li>
<li><a href="#">公司大事记</a>
<ul>
<li><a href="#">亲切关怀</a></li>
</ul>
</li>
<li><a href="#">政策法规</a>
</li>
<li><a href="#">企业部门</a>
<ul>
<li><a href="#">办公室</a></li>
<li><a href="#">综合计划处</a></li>
<li><a href="#">生产处</a></li>
<li><a href="#">机动处</a></li>
<li><a href="#">人事处</a></li>
<li><a href="#">安全环保处</a></li>
<li><a href="#">销售处</a></li>
<li><a href="#">财务处</a></li>
<li><a href="#">物资供应处</a></li>
</ul>
</li>
<li><a href="#">应用系统</a>
<ul>
<li><a href="#">信息系统</a></li>
<li><a href="#">用户发布系统</a></li>
<li><a href="#">实时数据库系统</a></li>
<li><a href="#">LIMS系统</a></li>
<li><a href="#">腐蚀监测系统</a></li>
<li><a href="#">大型机组状态监测</a></li>
<li><a href="#">TBM系统</a></li>
<li><a href="#">生产安全检查系统</a></li>
</ul>
</li>
</ul>
</div>
</body>
</html>
<!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" lang="zh-CN">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>CSS下拉菜单演示</title>
<style type="text/css">
<!--
.dropdownall{margin:0;padding:0;border:0;}
body {
font-family: arial, 宋体, serif;
font-size:12px;
}
#dropdown {
line-height: 24px; list-style-type: none; background:#666;
}
#dropdown a {
display:block; width: 108px; text-align:center;
}
#dropdown a:link {
color:#666; text-decoration:none;
}
#dropdown a:visited {
color:#666;text-decoration:none;
}
#dropdown a:hover {
color:#FFF;text-decoration:none;font-weight:bold;
}
#dropdown li {
float: left; width: 108px; background:#CCC;
}
#dropdown li a:hover{
background:#999;
}
#dropdown li ul { padding-left:0px;margin-left:0px;
line-height: 27px; list-style-type: none;text-align:left;
left: -800em; width: 180px; position: absolute;
}
#dropdown li ul li{ padding-left:0px;
float: left; width: 108px;
background: #F6F6F6;
}
#dropdown li ul a{display:inline-block; width: 108px;text-align:center;
}
#dropdown li ul a:link {
color:#666; text-decoration:none;
}
#dropdown li ul a:visited {
color:#666;text-decoration:none;
}
#dropdown li ul a:hover {
color:#F3F3F3;text-decoration:none;font-weight:normal;
background:#C00;
}
#dropdown li:hover ul {
left: auto;
}
#dropdown li.sfhover ul {
left: auto;
}
#content {
clear: left;
}
-->
</style>
<script type=text/javascript>
<!--//--><![CDATA[//><!--
function menuFix() {
var sfEls = document.getElementById("dropdown").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>
</head>
<body>
<div class="dropdownall">
<ul id="dropdown">
<li><a href="#">公司首页</a> </li>
<li><a href="#">企业概况</a>
<ul>
<li><a href="#">企业文化</a></li>
<li><a href="#">装置概览</a></li>
</ul>
</li>
<li><a href="#">企业管理</a>
<ul>
<li><a href="#">规章制度</a></li>
</ul>
</li>
<li><a href="#">文件管理</a>
<ul>
<li><a href="#">总部文件</a></li>
<li><a href="#">公司文件</a></li>
</ul>
</li>
<li><a href="#">党群工作</a>
</li>
<li><a href="#">公司大事记</a>
<ul>
<li><a href="#">亲切关怀</a></li>
</ul>
</li>
<li><a href="#">政策法规</a>
</li>
<li><a href="#">企业部门</a>
<ul>
<li><a href="#">办公室</a></li>
<li><a href="#">综合计划处</a></li>
<li><a href="#">生产处</a></li>
<li><a href="#">机动处</a></li>
<li><a href="#">人事处</a></li>
<li><a href="#">安全环保处</a></li>
<li><a href="#">销售处</a></li>
<li><a href="#">财务处</a></li>
<li><a href="#">物资供应处</a></li>
</ul>
</li>
<li><a href="#">应用系统</a>
<ul>
<li><a href="#">信息系统</a></li>
<li><a href="#">用户发布系统</a></li>
<li><a href="#">实时数据库系统</a></li>
<li><a href="#">LIMS系统</a></li>
<li><a href="#">腐蚀监测系统</a></li>
<li><a href="#">大型机组状态监测</a></li>
<li><a href="#">TBM系统</a></li>
<li><a href="#">生产安全检查系统</a></li>
</ul>
</li>
</ul>
</div>
</body>
</html>
left: 0;
}
#dropdown li.sfhover ul {
left: 0;
}