js动态生成文本框并获取其中的内容

<form name="form1" method="post" action="1.asp">
<input type="text" name="num" size=5>
<input type="button" value="生成文本框" onclick="f()">
<div id="test">
</div>
<input type="submit" value="提交">
</form>
<script language="javascript">
function f()
{
 num=document.form1.num.value;
 var s='';
 for(i=1;i<=num;i++)
 {
  s=s+"<input type=\"text\" name=\"text"+i+"\">";
 }
 document.getElementById("test").innerHTML=s;
}
</script>

<%
 num=request.Form("num")
 For i=1 To num
   a=request.form("text"&i)
   response.write "text"&i&"="&a&"<br />"
 next
%>