1 <html>
2 <head>
3 <title>收缩展开的竖直菜单（利用JS+CSS实现_网页代码站(www.webdm.cn)</title>
4 <script language="JavaScript">
5 NS4 = (document.layers) ? 1 : 0;
6 IE4 = (document.all) ? 1 : 0;
7 ver4 = (NS4 || IE4) ? 1 : 0;
8 if (ver4) {
9 with (document) {
10 write("<STYLE TYPE='text/css'>");
11 if (NS4) {
12 write(".parent {position:absolute; visibility:visible}");
13 write(".child {position:absolute; visibility:visible}");
14 write(".regular {position:absolute; visibility:visible}")
15 }
16 else {
17 write(".child {display:none}")
18 }
19 write("</STYLE>");
20 }
21 }
22 function arrange() {
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27 whichele.pageY = nextY;
28 nextY += whichele.document.height;
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31 }
32 function initIt(){
33 if (!ver4) return;
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35 for (i=0; i<document.layers.length; i++) {
36 whichele = document.layers[i];
37 if (whichele.id.indexOf("Child") != -1) whichele.visibility = "hide";
38 }
39 arrange();
40 }
41 else {
42 divColl = document.all.tags("DIV");
43 for (i=0; i<divColl.length; i++) {
44 whichele = divColl(i);
45 if (whichele.className == "child") whichele.style.display = "none";
46 }
47 }
48 }
49 function expandIt(ele) {
50 if (!ver4) return;
51 if (IE4) {
52 whichele = eval(ele + "Child");
53 if (whichele.style.display == "none") {
54 whichele.style.display = "block";
55 }
56 else {
57 whichele.style.display = "none";
58 }
59 }
60 else {
61 whichele = eval("document." + ele + "Child");
62 if (whichele.visibility == "hide") {
63 whichele.visibility = "show";
64 }
65 else {
66 whichele.visibility = "hide";
67 }
68 arrange();
69 }
70 }
71 onload = initIt;
72 </script>
73 </head>
74 <body>
75 <div id="menuParent" class="parent"> <a href="#" onClick="expandIt('menu'); return false" >第一菜单</a></div>
76 <div id="menuChild" class="child"> <a href="http://www.webdm.cn" target="_blank" >CSS菜单</a><br>
77 <a href="/" target="_blank" >网页特效</a><br>
78 <a href="/" target="_blank" >电子书籍</a></div>
79 <div id="Menu2Parent" class="parent"> <a href="#" onClick="expandIt('Menu2'); return false" >第二菜单</a></div>
80 <div id="Menu2Child" class="child"> <a href="/" target="_blank" >源码下载</a><br>
81 <a href="/" target="_blank" >站长工具</a><br>
82 <a href="/" target="_blank" >教程天地</a></div>
83 <div id="Menu3Parent" class="parent"> <a href="#" onClick="expandIt('Menu3'); return false" >第三菜单</a></div>
84 <div id="Menu3Child" class="child"> <a href="#" target="_blank" >自定义一</a><br>
85 <a href="#" target="_blank" >自定义二</a><br>
86 <a href="#" target="_blank" >自定义三</a></div>
87 </body>
88 </html>
89 <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！
文章来自：http://www.webdm.cn/webcode/f7adc0f5-5342-4bb9-b1dd-e2c6659cedf7.html