还是关于二级联动列表框的问题！没辙了……

呵呵
先将二级联动列表框输出
然后在<BODY>中写一个onload
这个事件的处理函数设为二级菜单的连动函数，将连动时的上级菜蛋的值设为你的第一个列表框的默认值就可以了

解决方案 »

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可以试试这个无限级的：）http://www.51windows.net/hw/asp/jsview.asp?id=337
已经在<body>里放了onload，我给出这段代码，看看怎么改。<form action="http://www.chinaleader.com/cgi-bin/register.cgi" method=post name="creator" enctype="multipart/form-data"><script language="javascript">

</script>
<body onload="init()">
<font color=#000000><b>来自：</b><br>请输入您所在国家的具体地方。此项可选<br><br>
省份 <select name="province" onChange = "select()"></select>　城市 <select name="city" onChange = "select()"></select><br>
我在 <input type=text name="newlocation" maxlength=12 size=12 style="font-weight: bold">　不能超过12个字符（6个汉字）
</form>
<%
dim conn
dim connstr
on error resume next
connstr="DBQ="+server.MapPath("test.mdb")+";DefaultDir=;DRIVER={Microsoft Access Driver (*.mdb)};"
set conn=server.CreateObject("ADODB.CONNECTION")
conn.open connstr
%><script language = "JavaScript">
sall=new Array();
<%
Dim i
i=0
set rs=conn.execute("select * from subject")
do while not rs.eof
%>
sall[<%=i%>]=new Array("<%=rs("subjectname")%>","<%=rs("departid")%>","<%=rs("subjectid")%>");
<%
i=i+1
rs.movenext
loop
rs.close
%>
function changeselect(selvalue)
   {
      document.myform.Nclassid.length=0;
      var selvalue=selvalue;
      var i;
      for(i=0;i<sall.length;i++)
{
    if(sall[i][1]==selvalue)
       {
   var newOption1=new Option(sall[i][0],sall[i][2]);
document.all.Nclassid.add(newOption1);
}
}
}
</script>
<form method="post" name="myform" action="ru_query.asp">
<select name="classid" onChange="changeselect(document.myform.classid.options[document.myform.classid.selectedIndex].value)" size="1">
<option selected value="">未指定条件</option>
<%
set rs1=conn.execute("select * from depart")
do while not rs1.eof
response.write "<option value='"&rs1("departid")&"'>"&rs1("departname")&"</option>"&chr(13)+chr(10)
rs1.movenext
loop
rs1.close
%>
</select>
<select name="Nclassid">
<option selected value="">未指定</option>
</select> 数据库设计表depart
字段
departID 自动编号
departName 文本 '省份表subject
字段
subjectID 自动编号
subjectName 文本 '城市
departID 数字 '所属国家ID
用下面这个就可以了
<html>
<head>
<title>级联下拉菜单</title>
</head>
<body onload="changelocation(document.myform.cateid.options[document.myform.cateid.selectedIndex].value)">
<form name="myform" method="post" action="Publish.asp" target="_top">
<select name="cateid" onChange="changelocation(document.myform.cateid.options[document.myform.cateid.selectedIndex].value)" size="1">
                <option selected value='1' name=cateid>网络软件</option><option  value='2' name=cateid>系统工具</option><option  value='3' name=cateid>应用软件</option><option  value='6' name=cateid>多媒体类</option><option  value='10' name=cateid>安全相关</option><option  value='11' name=cateid>教育教学</option>
              </select>
<br>
<select name="subcateid" size="1">
</select>
<SCRIPT language = "JavaScript">
    var onecount;
    onecount=0;
    subcat = new Array();

    subcat[0] = new Array("主页浏览","3","1");
    subcat[1] = new Array("书签工具","3","5");
    subcat[2] = new Array("FTP 工具","1","12");
    subcat[3] = new Array("系统增强","2","13");
    subcat[4] = new Array("系统设置","2","14");
    subcat[5] = new Array("系统备份","2","15");
    subcat[6] = new Array("桌面工具","2","16");
    subcat[7] = new Array("压缩解压","3","21");
    subcat[8] = new Array("文件管理","3","22");
    subcat[9] = new Array("文件更名","3","24");
    subcat[10] = new Array("电子阅读","3","27");
    subcat[11] = new Array("媒体播放","6","42");
    subcat[12] = new Array("音频处理","6","43");
    subcat[13] = new Array("下载工具","1","60");
    subcat[14] = new Array("系统安全","10","61");
    subcat[15] = new Array("网吧管理","10","63");
    subcat[16] = new Array("网络安全","10","64");
    subcat[17] = new Array("教育管理","11","66");
    subcat[18] = new Array("邮件工具","1","72");
    onecount=19;
    changelocation(1);function changelocation(locationid)
    {
    document.myform.subcateid.length = 0;     var locationid=locationid;
    var i;
    for (i=0;i < onecount; i++)
        {
            if (subcat[i][1] == locationid)
            {
                document.myform.subcateid.options[document.myform.subcateid.length] = new Option(subcat[i][0], subcat[i][2]);
            }
        }

    }
</SCRIPT>
</form>
</body>
</html>