很实用的的三种树形菜单代码
<style type="text/css">
a {text-decoration:none;}
a,a:visited {color:#000;background:inherit;}
body {margin:0;padding:20px;font:12px tahoma,宋体,sans-serif;}
dt {font-size:22px;font-weight:bold;margin:0 0 0 15px;}
dd {margin:0 0 0 15px;}
h4 {margin:0;padding:0;font-size:18px;text-align:center;}
p {margin:0;padding:0 0 0 18px;}
p a,p a:visited {color:#00f;background:inherit;}
/*CNLTreeMenu Start*/
.CNLTreeMenu img.s {cursor:pointer;vertical-align:middle;}
.CNLTreeMenu ul {padding:0;}
.CNLTreeMenu li {list-style:none;padding:0;}
.Closed ul {display:none;}
.Child img.s {background:none;cursor:default;}
#CNLTreeMenu1 ul {margin:0 0 0 17px;}
#CNLTreeMenu1 img.s {width:20px;height:15px;}
#CNLTreeMenu1 .Opened img.s {background:url(http://www.zzsky.cn/effect/images/treemenu/opened1.gif) no-repeat 0 0;}
#CNLTreeMenu1 .Closed img.s {background:url(http://www.zzsky.cn/effect/images/treemenu/closed1.gif) no-repeat 0 0;}
#CNLTreeMenu1 .Child img.s {background:url(http://www.zzsky.cn/effect/images/treemenu/child1.gif) no-repeat 3px 5px;}
#CNLTreeMenu2 ul {margin:0 0 0 17px;}
#CNLTreeMenu2 img.s {width:17px;height:15px;}
#CNLTreeMenu2 .Opened img.s {background:url(http://www.zzsky.cn/effect/images/treemenu/opened2.gif) no-repeat 4px 6px;}
#CNLTreeMenu2 .Closed img.s {background:url(http://www.zzsky.cn/effect/images/treemenu/closed2.gif) no-repeat 3px 6px;}
#CNLTreeMenu2 .Child img.s {background:url(http://www.zzsky.cn/effect/images/treemenu/child2.gif) no-repeat 3px 5px;}
#CNLTreeMenu3 ul {margin:0 0 0 17px;}
#CNLTreeMenu3 img.s {width:34px;height:18px;}
#CNLTreeMenu3 .Opened img.s {background:url(http://www.zzsky.cn/effect/images/treemenu/opened3.gif) no-repeat 0 1px;}
#CNLTreeMenu3 .Closed img.s {background:url(http://www.zzsky.cn/effect/images/treemenu/closed3.gif) no-repeat 0 1px;}
#CNLTreeMenu3 .Child img.s {background:url(http://www.zzsky.cn/effect/images/treemenu/child3.gif) no-repeat 13px 2px;}
/*CNLTreeMenu End*/
/*Temp CSS for View Demo*/
#CNLTreeMenu1,#CNLTreeMenu2,#CNLTreeMenu3 {float:left;width:249px;border:1px solid #99BEEF;background:#D2E4FC;color:inherit;margin:3px;padding:3px;}
#CNLTreeMenu1,#CNLTreeMenu2 {padding-bottom:15px;}
.ViewCode {clear:both;border:1px solid #FFB900;background:#FFFFCC;color:inherit;margin:3px;padding:3px;}
.ViewCode h6 {color:#00f;}
</style>
<title>无限级树形菜单- java中文网:www.javaweb.cc</title>
</head>
<body>
<div class="CNLTreeMenu" id="CNLTreeMenu1">
<h4>CNL Tree Menu1</h4>
<p><a id="AllOpen_1" href="#" onClick="MyCNLTreeMenu1.SetNodes(0);Hd(this);Sw('AllClose_1');">全部展开</a><a id="AllClose_1" href="#" onClick="MyCNLTreeMenu1.SetNodes(1);Hd(this);Sw('AllOpen_1');" style="display:none;">全部折叠</a></p>
<ul>
<li class="Opened"><a href="http://www.zzsky.cn">Zzsky.Cn</a>
<ul>
<li><a href="#1">技术区</a>
<ul>
<li><a href="#">网页技术</a>
<ul>
<li class="Child"><a href="#">JavaScript</a></li>
<!--Child Node-->
<li class="Child"><a href="#">HTML/XHTML/CSS</a></li>
<li class="Child"><a href="#">Ajax</a></li>
<li class="Child"><a href="#">网页制作工具</a></li>
<li class="Child"><a href="#">设计/图形</a></li>
<li class="Child"><a href="#">Flash/多媒体</a></li>
<li class="Child"><a href="#">VML/Web3D</a></li>
</ul>
</li>
<!--Sub Node 3-->
<li><a href="#">Web编程</a>
<ul>
<li class="Child"><a href="#">Java</a></li>
<!--Child Node-->
<li class="Child"><a href="#">.Net</a></li>
<li class="Child"><a href="#">ASP/VBScript</a></li>
<li class="Child"><a href="#">PHP</a></li>
<li class="Child"><a href="#">Perl/Python</a></li>
<li class="Child"><a href="#">Web综合/开源</a></li>
</ul>
</li>
<!--Sub Node 3-->
<li><a href="#">数据库</a>
<ul>
<li class="Child"><a href="#">Access/SQLServer</a></li>
<!--Child Node-->
<li class="Child"><a href="#">MySQL/PostgreSQL</a></li>
<li class="Child"><a href="#">Oracle/DB2/Sybase</a></li>
</ul>
</li>
<!--Sub Node 3-->
<li><a href="#">服务器</a>
<ul>
<li class="Child"><a href="#">Windows/IIS</a></li>
<!--Child Node-->
<li class="Child"><a href="#">Unix/Linux/Apache</a></li>
<li class="Child"><a href="#">应用服务器</a></li>
</ul>
</li>
<!--Sub Node 3-->
</ul>
</li>
<!--Sub Node 2-->
<li><a href="#1">二级目录</a>
<ul>
<li><a href="#">三级目录</a>
<ul>
<li><a href="#">四级目录</a>
<ul>
<li><a href="#">五级目录</a>
<ul>
<li><a href="#">......</a>
<ul>
<li><a href="#">第n级目录</a>
<ul>
<li class="Child"><a href="#">叶结点1</a></li>
<!--Child Node-->
<li class="Child"><a href="#">叶结点2</a></li>
<li class="Child"><a href="#">叶结点3</a></li>
</ul>
</li>
<!--Sub Node n -->
</ul>
</li>
<!--Sub Node 6 -->
</ul>
</li>
<!--Sub Node 5 -->
</ul>
</li>
<!--Sub Node 4-->
</ul>
</li>
<!--Sub Node 3-->
</ul>
</li>
<!--Sub Node 2-->
<li><a href="#1">二级目录</a>
<ul>
<li><a href="#">三级目录</a>
<ul>
<li><a href="#">四级目录</a>
<ul>
<li><a href="#">五级目录</a>
<ul>
<li><a href="#">......</a>
<ul>
<li><a href="#">第n级目录</a>
<ul>
<li class="Child"><a href="#">叶结点1</a></li>
<!--Child Node-->
<li class="Child"><a href="#">叶结点2</a></li>
<li class="Child"><a href="#">叶结点3</a></li>
</ul>
</li>
<!--Sub Node n -->
</ul>
</li>
<!--Sub Node 6 -->
</ul>
</li>
<!--Sub Node 5 -->
</ul>
</li>
<!--Sub Node 4-->
</ul>
</li>
<!--Sub Node 3-->
</ul>
</li>
<!--Sub Node 2-->
</ul>
</li>
<!--Sub Node 1 -->
</ul>
</div>
<!-- CNLTreeMenu -->
<!--CNLTreeMenu1 End!-->
<!--CNLTreeMenu2 Start:-->
<div class="CNLTreeMenu" id="CNLTreeMenu2">
<h4>CNL Tree Menu2</h4>
<p><a id="AllOpen_2" href="#" onClick="MyCNLTreeMenu2.SetNodes(0);Hd(this);Sw('AllClose_2');">全部展开</a><a id="AllClose_2" href="#" onClick="MyCNLTreeMenu2.SetNodes(1);Hd(this);Sw('AllOpen_2');" style="display:none;">全部折叠</a></p>
<ul>
<li class="Opened"><a href="http://www.zzsky.cn">Zzsky.Cn</a>
<ul>
<li><a href="#1">技术区</a>
<ul>
<li><a href="#">网页技术</a>
<ul>
<li class="Child"><a href="#">JavaScript</a></li>
<!--Child Node-->
<li class="Child"><a href="#">HTML/XHTML/CSS</a></li>
<li class="Child"><a href="#">Ajax</a></li>
<li class="Child"><a href="#">网页制作工具</a></li>
<li class="Child"><a href="#">设计/图形</a></li>
<li class="Child"><a href="#">Flash/多媒体</a></li>
<li class="Child"><a href="#">VML/Web3D</a></li>
</ul>
</li>
<!--Sub Node 3-->
<li><a href="#">Web编程</a>
<ul>
<li class="Child"><a href="#">Java</a></li>
<!--Child Node-->
<li class="Child"><a href="#">.Net</a></li>
<li class="Child"><a href="#">ASP/VBScript</a></li>
<li class="Child"><a href="#">PHP</a></li>
<li class="Child"><a href="#">Perl/Python</a></li>
<li class="Child"><a href="#">Web综合/开源</a></li>
</ul>
</li>
<!--Sub Node 3-->
<li><a href="#">数据库</a>
<ul>
<li class="Child"><a href="#">Access/SQLServer</a></li>
<!--Child Node-->
<li class="Child"><a href="#">MySQL/PostgreSQL</a></li>
<li class="Child"><a href="#">Oracle/DB2/Sybase</a></li>
</ul>
</li>
<!--Sub Node 3-->
<li><a href="#">服务器</a>
<ul>
<li class="Child"><a href="#">Windows/IIS</a></li>
<!--Child Node-->
<li class="Child"><a href="#">Unix/Linux/Apache</a></li>
<li class="Child"><a href="#">应用服务器</a></li>
</ul>
</li>
<!--Sub Node 3-->
</ul>
</li>
<!--Sub Node 2-->
<li><a href="#1">二级目录</a>
<ul>
<li><a href="#">三级目录</a>
<ul>
<li><a href="#">四级目录</a>
<ul>
<li><a href="#">五级目录</a>
<ul>
<li><a href="#">......</a>
<ul>
<li><a href="#">第n级目录</a>
<ul>
<li class="Child"><a href="#">叶结点1</a></li>
<!--Child Node-->
<li class="Child"><a href="#">叶结点2</a></li>
<li class="Child"><a href="#">叶结点3</a></li>
</ul>
</li>
<!--Sub Node n -->
</ul>
</li>
<!--Sub Node 6 -->
</ul>
</li>
<!--Sub Node 5 -->
</ul>
</li>
<!--Sub Node 4-->
</ul>
</li>
<!--Sub Node 3-->
</ul>
</li>
<!--Sub Node 2-->
<li><a href="#1">二级目录</a>
<ul>
<li><a href="#">三级目录</a>
<ul>
<li><a href="#">四级目录</a>
<ul>
<li><a href="#">五级目录</a>
<ul>
<li><a href="#">......</a>
<ul>
<li><a href="#">第n级目录</a>
<ul>
<li class="Child"><a href="#">叶结点1</a></li>
<!--Child Node-->
<li class="Child"><a href="#">叶结点2</a></li>
<li class="Child"><a href="#">叶结点3</a></li>
</ul>
</li>
<!--Sub Node n -->
</ul>
</li>
<!--Sub Node 6 -->
</ul>
</li>
<!--Sub Node 5 -->
</ul>
</li>
<!--Sub Node 4-->
</ul>
</li>
<!--Sub Node 3-->
</ul>
</li>
<!--Sub Node 2-->
</ul>
</li>
<!--Sub Node 1 -->
</ul>
</div>
<!-- CNLTreeMenu -->
<!--CNLTreeMenu2 End-->
<!--CNLTreeMenu3 Start:-->
<div class="CNLTreeMenu" id="CNLTreeMenu3">
<h4>CNL Tree Menu3</h4>
<p><a id="AllOpen_3" href="#" onClick="MyCNLTreeMenu3.SetNodes(0);Hd(this);Sw('AllClose_3');">全部展开</a><a id="AllClose_3" href="#" onClick="MyCNLTreeMenu3.SetNodes(1);Hd(this);Sw('AllOpen_3');" style="display:none;">全部折叠</a></p>
<ul>
<li class="Opened"><a href="http://www.zzsky.cn">Zzsky.Cn</a>
<ul>
<li><a href="#1">技术区</a>
<ul>
<li><a href="#">网页技术</a>
<ul>
<li class="Child"><a href="#">JavaScript</a></li>
<!--Child Node-->
<li class="Child"><a href="#">HTML/XHTML/CSS</a></li>
<li class="Child"><a href="#">Ajax</a></li>
<li class="Child"><a href="#">网页制作工具</a></li>
<li class="Child"><a href="#">设计/图形</a></li>
<li class="Child"><a href="#">Flash/多媒体</a></li>
<li class="Child"><a href="#">VML/Web3D</a></li>
</ul>
</li>
<!--Sub Node 3-->
<li><a href="#">Web编程</a>
<ul>
<li class="Child"><a href="#">Java</a></li>
<!--Child Node-->
<li class="Child"><a href="#">.Net</a></li>
<li class="Child"><a href="#">ASP/VBScript</a></li>
<li class="Child"><a href="#">PHP</a></li>
<li class="Child"><a href="#">Perl/Python</a></li>
<li class="Child"><a href="#">Web综合/开源</a></li>
</ul>
</li>
<!--Sub Node 3-->
<li><a href="#">数据库</a>
<ul>
<li class="Child"><a href="#">Access/SQLServer</a></li>
<!--Child Node-->
<li class="Child"><a href="#">MySQL/PostgreSQL</a></li>
<li class="Child"><a href="#">Oracle/DB2/Sybase</a></li>
</ul>
</li>
<!--Sub Node 3-->
<li><a href="#">服务器</a>
<ul>
<li class="Child"><a href="#">Windows/IIS</a></li>
<!--Child Node-->
<li class="Child"><a href="#">Unix/Linux/Apache</a></li>
<li class="Child"><a href="#">应用服务器</a></li>
</ul>
</li>
<!--Sub Node 3-->
</ul>
</li>
<!--Sub Node 2-->
<li><a href="#1">二级目录</a>
<ul>
<li><a href="#">三级目录</a>
<ul>
<li><a href="#">四级目录</a>
<ul>
<li><a href="#">五级目录</a>
<ul>
<li><a href="#">......</a>
<ul>
<li><a href="#">第n级目录</a>
<ul>
<li class="Child"><a href="#">叶结点1</a></li>
<!--Child Node-->
<li class="Child"><a href="#">叶结点2</a></li>
<li class="Child"><a href="#">叶结点3</a></li>
</ul>
</li>
<!--Sub Node n -->
</ul>
</li>
<!--Sub Node 6 -->
</ul>
</li>
<!--Sub Node 5 -->
</ul>
</li>
<!--Sub Node 4-->
</ul>
</li>
<!--Sub Node 3-->
</ul>
</li>
<!--Sub Node 2-->
<li><a href="#1">二级目录</a>
<ul>
<li><a href="#">三级目录</a>
<ul>
<li><a href="#">四级目录</a>
<ul>
<li><a href="#">五级目录</a>
<ul>
<li><a href="#">......</a>
<ul>
<li><a href="#">第n级目录</a>
<ul>
<li class="Child"><a href="#">叶结点1</a></li>
<!--Child Node-->
<li class="Child"><a href="#">叶结点2</a></li>
<li class="Child"><a href="#">叶结点3</a></li>
</ul>
</li>
<!--Sub Node n -->
</ul>
</li>
<!--Sub Node 6 -->
</ul>
</li>
<!--Sub Node 5 -->
</ul>
</li>
<!--Sub Node 4-->
</ul>
</li>
<!--Sub Node 3-->
</ul>
</li>
<!--Sub Node 2-->
</ul>
</li>
<!--Sub Node 1 -->
</ul>
</div>
<script type="text/javascript">
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function Ob(o){
var o=document.getElementById(o)?document.getElementById(o):o;
return o;
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function Hd(o) {
Ob(o).style.display="none";
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function Sw(o) {
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function ExCls(o,a,b,n){
var o=Ob(o);
for(i=0;i<n;i++) {o=o.parentNode;}
o.className=o.className==a?b:a;
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function CNLTreeMenu(id,TagName0) {
this.id=id;
this.TagName0=TagName0==""?"li":TagName0;
this.AllNodes = Ob(this.id).getElementsByTagName(TagName0);
this.InitCss = function (ClassName0,ClassName1,ClassName2,ImgUrl) {
this.ClassName0=ClassName0;
this.ClassName1=ClassName1;
this.ClassName2=ClassName2;
this.ImgUrl=ImgUrl || "http://www.zzsky.cn/effect/images/treemenu/s.gif";
this.ImgBlankA ="<img src=\""+this.ImgUrl+"\" class=\"s\" onclick=\"ExCls(this,'"+ClassName0+"','"+ClassName1+"',1);\" alt=\"展开/折叠\" />";
this.ImgBlankB ="<img src=\""+this.ImgUrl+"\" class=\"s\" />";
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this.AllNodes[i].className==""?this.AllNodes[i].className=ClassName1:"";
this.AllNodes[i].innerHTML=(this.AllNodes[i].className==ClassName2?this.ImgBlankB:this.ImgBlankA)+this.AllNodes[i].innerHTML;
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this.SetNodes = function (n) {
var sClsName=n==0?this.ClassName0:this.ClassName1;
for (i=0;i<this.AllNodes.length;i++ ) {
this.AllNodes[i].className==this.ClassName2?"":this.AllNodes[i].className=sClsName;
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}
}
var MyCNLTreeMenu1=new CNLTreeMenu("CNLTreeMenu1","li");
MyCNLTreeMenu1.InitCss("Opened","Closed","Child","http://www.zzsky.cn/effect/images/treemenu/s.gif");
var MyCNLTreeMenu2=new CNLTreeMenu("CNLTreeMenu2","li");
MyCNLTreeMenu2.InitCss("Opened","Closed","Child","http://www.zzsky.cn/effect/images/treemenu/s.gif");
var MyCNLTreeMenu3=new CNLTreeMenu("CNLTreeMenu3","li");
MyCNLTreeMenu3.InitCss("Opened","Closed","Child","http://www.zzsky.cn/effect/images/treemenu/s.gif");
-->
</script>
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