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无限级联菜单 – javascript

琥珀无限级联菜单…javascript版的,收藏列~
===================================

<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<title>琥珀网 – javascript无限级联动菜单</title>
<style type="text/css">
body, td
{
font-family: 宋体;
font-size: 12px;
}
</style>
<script language="javascript">
/*—————————————————————————*\
| Subject: JavaScript三级联动菜单 |
| Version: 1.0 |
| Author: 琥珀【hopesoft】 |
| FileName: HPMenu.js |
| Created: 2005-10-16 |
| LastModified: 2005-10-16 |
| Download: http://www.10090.com/Demo/hpmenu/HPMenu.rar |
| Explain: http://www.10090.com/Demo/ |
| Demo: http://www.10090.com/Demo/ |
| |
| You may use this code on your item |
| this entire copyright notice appears unchanged |
| and you clearly display a link to http://www.10090.com/ |
| |
|—————————————————————————–|
| MSN: hopesoft@msn.com QQ: 11318729 http://www.10090.com |
| Copyright (c) 2004-2005 HopeSoftStudio |
\*—————————————————————————*/

function Menu(theform,menuid) {
/*—————————————————————————*\
* 1.变量定义                       *
/*—————————————————————————*/     

//定义菜单级别MenuClass,菜单长度数组MenuLenArr,
//菜单名称数组MenuArr,下级菜单数组SubMenuArr,菜单ID数组MenuIdArr
var MenuClass,MenuLenArr,MenuArr,SubMenuArr,MenuIdArr

//定义分隔符:splitchar1,splitchar2
var splitchar1,splitchar2

//定义临时数组,子数组,数组长度,
var arr,subarr,arrlen

/*—————————————————————————*\
* 2.变量赋值                       *
/*—————————————————————————*/
MenuArr=new Array()
MenuLenArr=new Array()
SubMenuArr=new Array()
MenuIdArr=new Array()

MenuArr[1]="欧洲|||亚洲|||非洲|||大洋洲|||北美洲|||南美洲" //洲名|||…
MenuArr[2]="欧洲###德国|||欧洲###法国|||北美洲###美国|||北美洲###加拿大|||亚洲###中国|||非洲###埃及|||大洋洲###澳大利亚|||南美洲###墨西哥" //洲名###国名|||…
MenuArr[3]="中国###北京|||中国###上海|||美国###华盛顿|||美国###纽约|||德国###柏林|||法国###巴黎|||加拿大###多伦多|||埃及###开罗|||澳大利亚###悉尼|||墨西哥###墨西哥城" //国名###城市名|||…
MenuArr[4]="北京###朝阳区|||上海###徐汇区|||广州###天河区|||纽约###曼哈顿区|||华盛顿###华盛顿区|||柏林###新柏林区|||巴黎###大巴黎区|||开罗###大开罗|||悉尼###悉尼市区|||墨西哥城###墨西哥城区" //国名###城市名|||…

MenuIdArr[1]="zhou"
MenuIdArr[2]="guo"
MenuIdArr[3]="shi"
MenuIdArr[4]="qu"
MenuClass=4 //4级菜单

splitchar1="|||";
splitchar2="###";

/*—————————————————————————*\
* 3.生成数组                       *
/*—————————————————————————*/
for(iii=1;iii<=MenuClass;iii++)
{
arr=MenuArr[iii].split(splitchar1);
len=arr.length;
subarr=new Array()
for (i=0;i<len;i++)
{
subarr[i]=arr[i].split(splitchar2);
}
len=subarr.length;
SubMenuArr[iii]=subarr
MenuLenArr[iii]=len
}

//============更改下级菜单======================
var self,submenu,thislen,thisarr  
//self本级菜单
//submenu子菜单
//theform:所在表单对象[type:object]
//menuid:本级菜单级别ID,如1级菜单则为1
  self=eval("document."+theform.name+"."+MenuIdArr[menuid])  
  submenu=eval("document."+theform.name+"."+MenuIdArr[menuid+1])  
  thislen=MenuLenArr[menuid+1]
  thisarr=SubMenuArr[menuid+1]
  submenu.length=0
  submenu.options.add(new Option( "—–请选择—–",""));
   for (i=0;i<thislen;i++)
   {
   if (thisarr[i][0] == self.value)
    {
     submenu.options.add(new Option(thisarr[i][1], thisarr[i][1]));
   }
   }
   submenu.options[0].selected=true

//============更改下级以下菜单==============
var kkk
for(kkk=menuid+2;kkk<=MenuClass;kkk++)
  {    
  submenu=eval("document."+theform.name+"."+MenuIdArr[kkk])  
  submenu.length=0
  submenu.options.add(new Option( "—–请选择—–",""));  
  submenu.options[0].selected=true
  }
}

</script>
<form name="form1" method="post" action="">
<table width="90%" border="0" align="center" cellpadding="2" cellspacing="1" bgcolor="#CCCCCC">
<tr bgcolor="F1F1F1">
<td height="24" colspan="2" align="center">琥珀无限级联动菜单-JavaScript版 [HPMenu V1.0]</td>
</tr>
<tr bgcolor="#FFFFFF">
<td width="12%" height="24" align="center">所 在 洲:</td>
<td><select name="zhou" id="zhou" onChange="Menu(this.form,1);">
<option value="" selected>—–请选择—–</option>
        <option value='欧洲'>欧洲</option>
        <option value='亚洲'>亚洲</option>
        <option value='非洲'>非洲</option>
        <option value='大洋洲'>大洋洲</option>
        <option value='北美洲'>北美洲</option>
        <option value='南美洲'>南美洲</option>
</select></td>
</tr>
<tr bgcolor="#FFFFFF">
<td height="24" align="center">国  家:</td>
<td><select name="guo" id="select" onChange="Menu(this.form,2);">
<option value="" selected>—–请选择—–</option>
</select></td>
</tr>
<tr bgcolor="#FFFFFF">
<td height="24" align="center">城  市:</td>
<td><select name="shi" id="select2" onChange="Menu(this.form,3);">
<option value="" selected>—-
-

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