我第一层用的是
<select name='kind' onchange='javascript:this.form.submit();'><option value=0 selected>请选择</option>
那么第2层我该用什么？onchange='javascript:this.form.submit();'应如何书写
我不太会JS，谢谢
<select name='kind' onchange='javascript:this.form.submit();'><option value=0 selected>请选择</option>
那么第2层我该用什么？onchange='javascript:this.form.submit();'应如何书写
我不太会JS，谢谢
这个静态生成的是
<html>
<head>
<title>华立集团信息维护工具</title>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
</head>
<body bgcolor="#FFFFFF" text="#000000" leftmargin="15" topmargin="15" marginwidth="15" marginheight="15"> <td width="804" align="center" valign="middle">
<center>
<h2>产品类别维护</h2>
<form name=form method='post' action="search.php" enctype="multipart/form-data">
<p> </p>
<p> </p>
<table border=0 cellspacing=0 cellpadding=0 width="700" align=center>
<tr>
<td width=49% valign=top>
<table width=100% cellspacing=1 cellpadding=5 border=0 bgcolor="70C0DF">
<tr>
<td bgcolor="#F7F7F7" height='24'>大类别：</td>
<td bgcolor="ffffff">
<select name='kind' onchange='javascript:this.form.submit();'><option value=0 selected>请选择</option><option value=1 >电脑与网络</option><option value=2 selected>交通工具</option><option value=3 >家居生活用品</option></select></td>
</tr>
<form name=form1 method='post'><tr><td bgcolor='#F7F7F7'>子类别: </td><td height='24'bgcolor='#F7F7F7'><font color=''></font><font color=''><b><select name=kind1 onchange='javascript:this.form.submit();'><option value=0>请选择</option><option value=7 >自行车</option></select></b></font></td></tr></form>
<tr>
<td bgcolor="#F7F7F7">类别品称: </td>
<td height='24'bgcolor="#F7F7F7"><font color=''></font><font color=''><b>
<input type='text' name='kind3'>
</b></font></td>
</tr>
<tr>
<td bgcolor="#F7F7F7"> </td>
<td bgcolor="ffffff">
<input type="submit" name="btn_do" value="开始搜索" style="font-size: 9pt">
</td>
</tr>
</table>
</td>
</tr>
</table>
<p align="right"></p>
</form>
</center>
<br>
</td>
</body>
</html>
<head>
<title>List</title>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<script LANGUAGE="javascript">
<!--
var onecount;
onecount=0;
subcat = new Array();
subcat[0] = new Array("徐汇区","01","001");
subcat[1] = new Array("嘉定区","01","002");
subcat[2] = new Array("黄浦区","01","003");
subcat[3] = new Array("南昌市","02","004");
subcat[4] = new Array("九江市","02","005");
subcat[5] = new Array("上饶市","02","006");onecount=6;function changelocation(locationid)
{
document.myform.smalllocation.length = 0; var locationid=locationid;
var i;
document.myform.smalllocation.options[0] = new Option('====所有地区====','');
for (i=0;i < onecount; i++)
{
if (subcat[i][1] == locationid)
{
document.myform.smalllocation.options[document.myform.smalllocation.length] = new Option(subcat[i][0], subcat[i][2]);
}
}
} //-->
</script>
</head>
<body>
<form name="myform" method="post">
<select name="biglocation" onChange="changelocation(document.myform.biglocation.options[document.myform.biglocation.selectedIndex].value)">
<option value="01" selected>上海</option>
<option value="02">江西</option>
</select>
<select name="smalllocation">
<option selected value="">==所有地区==</option>
</select>
</form>
<script LANGUAGE="javascript">
<!--
changelocation(document.myform.biglocation.options[document.myform.biglocation.selectedIndex].value);
//-->
</script>
</body>
</html>
就象这种有三层的，我估计我的超过三层
请问一下，我拉第2层的时候为什么跳到 请选择 而固定不了
请指点一下