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PHP导航下拉菜单的实现如此简单

2019年04月04日  | 移动技术网IT编程  | 我要评论
复制代码 代码如下:

<style>
#sddm li a:hover
{ background: #49a3ff}

#sddm div
{ position: absolute;
visibility: hidden;
margin: 0;
padding: 0;
background: #eaebd8;
border: 1px solid #5970b2}

#sddm div a
{ position: relative;
display: block;
margin: 0;
padding: 5px 10px;
width: auto;
white-space: nowrap;
text-align: left;
text-decoration: none;
background: #eaebd8;
color: #2875de;
font: 12px arial}

#sddm div a:hover
{ background: #49a3ff;
color: #fff}
</style>
<!-- dd menu -->
<script type="text/javascript">
<!--
var timeout = 500;
var closetimer = 0;
var ddmenuitem = 0;

// open hidden layer
function mopen(id)
{
// cancel close timer
mcancelclosetime();

// close old layer
if(ddmenuitem) ddmenuitem.style.visibility = 'hidden';

// get new layer and show it
ddmenuitem = document.getelementbyid(id);
ddmenuitem.style.visibility = 'visible';

}
// close showed layer
function mclose()
{
if(ddmenuitem) ddmenuitem.style.visibility = 'hidden';
}

// go close timer
function mclosetime()
{
closetimer = window.settimeout(mclose, timeout);
}

// cancel close timer
function mcancelclosetime()
{
if(closetimer)
{
window.cleartimeout(closetimer);
closetimer = null;
}
}

// close layer when click-out
document.onclick = mclose;
// -->
</script>
<div class="header_continer002">

<div class="header"> <img class="logo" src="images/logo.jpg" /> <span class="pos_01">服务热线<br />
400-691-6006</span> <span class="pos_02"> <a href="http://u.youku.com/user_show/id_umzmxndi5mtgw.html" target="_blank"><img src="images/top_pic01.jpg" /></a>

<div style="margin-top:5px;"> <a href="http://weibo.com/tcdd" target="_blank"><img src="images/top_pic02.jpg" /></a></div>
</span>
<ul class="nav" onmouseout="hide_sub()" id="sddm">
<li><a href="/">首页</a></li>

<li><a href="/plus/list.php?tid=1" onmouseover="mopen('m1')" onmouseout="mclosetime()">关于我们</a>
<div id="m1" onmouseover="mcancelclosetime()" onmouseout="mclosetime()">
<a href="#">html dropdown</a>
<a href="#">dhtml dropdown menu</a>
<a href="#">javascript dropdown</a>
<a href="#">dropdown menu</a>
<a href="#">css dropdown</a>
</div>
</li>

<li><a href="/plus/list.php?tid=2" onmouseover="mopen('m2')" onmouseout="mclosetime()">新闻中心</a>
<div id="m2" onmouseover="mcancelclosetime()" onmouseout="mclosetime()">
<a href="#">asp dropdown</a>
<a href="#">pulldown menu</a>
<a href="#">ajax dropdown</a>
<a href="#">div dropdown</a>
</div>
</li>

<li><a href="/plus/list.php?tid=3" onmouseover="mopen('m3')" onmouseout="mclosetime()">解决方案</a>
<div id="m3" onmouseover="mcancelclosetime()" onmouseout="mclosetime()">
<a href="#">asp dropdown</a>
<a href="#">pulldown menu</a>
<a href="#">ajax dropdown</a>
<a href="#">div dropdown</a>
</div>
</li>

<li><a href="/plus/list.php?tid=4" onmouseover="mopen('m4')" onmouseout="mclosetime()">产品展示</a>
<div id="m4" onmouseover="mcancelclosetime()" onmouseout="mclosetime()">
<a href="#">asp dropdown</a>
<a href="#">pulldown menu</a>
<a href="#">ajax dropdown</a>
<a href="#">div dropdown</a>
</div>
</li>

<li><a href="/plus/list.php?tid=5" onmouseover="mopen('m5')" onmouseout="mclosetime()">支持与下载</a>
<div id="m5" onmouseover="mcancelclosetime()" onmouseout="mclosetime()">
<a href="#">asp dropdown</a>
<a href="#">pulldown menu</a>
<a href="#">ajax dropdown</a>
<a href="#">div dropdown</a>
</div>
</li>

<li><a href="/plus/list.php?tid=6" onmouseover="mopen('m6')" onmouseout="mclosetime()">人才招聘</a>
<div id="m6" onmouseover="mcancelclosetime()" onmouseout="mclosetime()">
<a href="#">asp dropdown</a>
<a href="#">pulldown menu</a>
<a href="#">ajax dropdown</a>
<a href="#">div dropdown</a>
</div>
</li>

<li><a href="/plus/list.php?tid=7" onmouseover="mopen('m7')" onmouseout="mclosetime()">联系我们</a>
<div id="m7" onmouseover="mcancelclosetime()" onmouseout="mclosetime()">
<a href="#">asp dropdown</a>
<a href="#">pulldown menu</a>
<a href="#">ajax dropdown</a>
<a href="#">div dropdown</a>
</div>
</li>
</ul>
</dl>
</div>
</div>
</div>

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