代码简介：
非常棒的一款代码，鼠标指向文字后显示对应的内容，JS配合CSS实现的。
代码内容：
<!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">
<head>
<title>【荐】鼠标放上弹出下拉菜单的代码_网页代码站(www.webdm.cn)</title>
<script type="text/javascript">
var g_parent,g_child;
var g_hideTimer = null;
var g_locked = false;
function $id(id)
{
return document.getElementById(id);
}
function getPos(parentObj)
{
var parentPos = [];
parentPos[0] = parentObj.offsetLeft;//x
parentPos[1] = parentObj.offsetTop;//y
while (parentObj = parentObj.offsetParent)
{
parentPos[0] += parentObj.offsetLeft;
parentPos[1] += parentObj.offsetTop;
}
return parentPos;
}
function showMoreSoftware(parentObj,childName)
{
if (g_hideTimer != null)
{
clearTimeout(g_hideTimer);
return;
}
var parentPos = getPos(parentObj);
$id(childName).style.left = parentPos[0] + "px";
$id(childName).style.top = parentPos[1] + 26 + "px";
$id("lockBtn").style.left = "163px";
parentObj.className = "active";
$id(childName).style.display = "block";
g_parent = parentObj;
g_child = $id(childName);
}
function hideMoreSoftware()
{
if (g_locked == true)
{
return;
}
else
{
g_hideTimer = setTimeout(function(){hidingMenu();},1);
}
}
function hidingMenu()
{
g_parent.className = "normal";
g_child.style.display = "none";
clearTimeout(g_hideTimer);
g_hideTimer = null;
if (g_locked == true)
{
$id("lockBtn").className = "drawingPin";
g_locked = false;
}
}
function lockMenu()
{
if (g_locked == false)
{
$id("lockBtn").className = "drawingPin_2";
$id("lockBtn").title="解除固定";
g_locked = true;
}
else
{
$id("lockBtn").className = "drawingPin";
$id("lockBtn").title="固定";
g_locked = false;
}
}
</script>
<style>
*:lang(en) .newHeader .nav{
margin-top:30px;
}
a:link,a:visited,a:active{
color:#3372a2; text-decoration:none;
}
a:hover{
text-decoration:underline;}
h2{
padding:0; margin:0; font-weight:bold; font-size:12px; height:28px; 142px;}
h2.active{
background:#99c9e3;}
h2 div{
position:absolute; padding:1px 1px 0 1px; margin:1px 1px 0 1px; 138px; overflow:hidden; z-index:10;
cursor:pointer;}
h2.active div{
background:white;}
h2 span{
display:block; padding:0 9px; height:26px;}
h2.active span{
background:url(http://webdm.cn/images/20090922/more_soft.gif) repeat-x left top; }
h2 span em{
font-style:normal; display:block; background:url(http://webdm.cn/images/20090922/more_soft.gif) no-repeat right
-26px; padding-right:15px; line-height:25px;}
.softList{
position:absolute; background:white; border:1px #99c9e3 solid; z-index:9; padding:5px 10px; 165px;
display:none;}
.left{
float:left; 50%;}
.right{
float:right; 50%;}
h3{
color:#cc6600; margin:0; padding:0; font-size:14px; font-weight:bolder;}
ul{
margin:0; padding:0 0 20px 0;}
ul.last{
padding:0;}
ul li{
height:auto; line-height:18px; }
ul li a{
font-size:12px;}
</style>
</head>
<body>
<div class="main">
<div>
<div class="part1">
<div class="version">
<div class="padder">
<h2 onmouseover="showMoreSoftware(this,'softList')" onmouseout="hideMoreSoftware()"
class="normal"><div><span><em>导航栏</em></span></div></h2>
<div class="softList" id="softList" onmouseover="showMoreSoftware()" onmouseout="hideMoreSoftware
()">
<a class="drawingPin" href="javascript:void(0);" onclick="lockMenu()" id="lockBtn" title="固
定"></a>
<div class="qq">
<h3>ASP资源</h3>
<ul>
<li><a onclick="hidingMenu()" href="/" target="_blank">优秀论坛社区程序</a></li>
<li><a onclick="hidingMenu()" href="/" target="_blank">CMS系统建站资源</a></li>
<li><a onclick="hidingMenu()" href="/sort/list_1_145_1.shtml" target="_blank">著名博客日
记系统</a></li>
</ul>
</div>
<div class="others">
<div class="left">
<h3>PHP资源</h3>
<ul>
<li><a onclick="hidingMenu()" href="/sort/list_2_35_1.shtml" target="_blank">企业建站
</a></li>
<li><a onclick="hidingMenu()" href="/sort/list_2_34_1.shtml" target="_blank">留言程序
</a></li>
<li><a onclick="hidingMenu()" href="/sort/list_2_47_1.shtml" target="_blank">相册系统
</a></li>
</ul>
<h3>JAVA实例</h3>
<ul class="last">
<li><a onclick="hidingMenu()" href="/sort/list_5_80_1.shtml" target="_blank">游戏编程
</a></li>
<li><a onclick="hidingMenu()" href="/sort/list_5_99_1.shtml" target="_blank">JAVA窗体
</a></li>
<li><a onclick="hidingMenu()" href="/sort/list_5_82_1.shtml" target="_blank">媒体与网
络</a></li>
</ul>
</div>
<div class="right">
<h3>脚本资源</h3>
<ul>
<li><a onclick="hidingMenu()" href="/sort/list_11_203_1.shtml" target="_blank">AJAX资
源</a></li>
<li><a onclick="hidingMenu()" href="/sort/list_11_168_1.shtml" target="_blank">CSS特
效</a></li>
<li><a onclick="hidingMenu()" href="/sort/list_11_202_1.shtml" target="_blank">网页编
辑器</a></li>
</ul>
<h3>生活品味</h3>
<ul>
<li><a onclick="hidingMenu()" href="/sort/list_7_228_1.shtml" target="_blank">AJAX教
程</a></li>
<li><a onclick="hidingMenu()" href="/sort/list_7_136_1.shtml" target="_blank">JAVA开
发</a></li>
</ul>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</body>
</html>
<br>
<p><a href="http://www.webdm.cn">网页代码站</a> - 最专业的代码下载网站 - 致力为中国站长提供有质量的代码！</p>