关于刷新的问题，但没人提过。

我用如下代码做了一个不用换页更新内容的网页，就是不用点“提交”，只需点下拉菜单
中的项目就自动更新显示内容，但是当内容发生变化时，页面却不能刷新，点“刷新”后才能显示变化后的内容。还有没有更好的不换页的好方法？不知你们听明白了吗？
atype.asp:

1cc=request.querystring("cc")

1<form action="atype.asp" method="POST">

set dbConnect=Server.CreateObject("ADODB.Connection")
dbConnect.Open "jin","",""
set dbRS=dbConnect.Execute("SELECT * FROM tab where f1="&amp;cc&amp;" ")
set dbRS1=dbConnect.Execute("SELECT distinct 类型 FROM tab "

1<p align="left" style="margin-top: -4; margin-bottom: -4">选择类型：<select name="d1" onchange="window.open(this.options[this.selectedIndex].value,'_self')" size="1" style="background-color: #CCFFFF" target="_top">

Do While Not dbRS1.EOF

1<option value="atype.asp?cc=```
2=dbRS1(0)
3```">```
4=dbRS1(0) 

1 dbRS1.MoveNext   
2Loop 
3```</option></select></p></form>

。。。。。。

---------------------------------------------------------------

首先，你的数据库应该这样安排：
省表 sheng 城市表 city
sid sname cid cname sid
1 北京 1 密云县 1
2 广东 2 广州 2
3 ..... 3 深圳 2
4 珠海 2
5 ....

1   
2dim rs   
3dim sql   
4dim count   
5set rs=server.createobject("adodb.recordset")   
6sql = "select * from city order by cid asc"   
7rs.open sql,conn,1,1   

1<script language="JavaScript">   
2var onecount;   
3onecount=0;   
4subcat = new Array();

count = 0
do while not rs.eof

1subcat[```
2=count
3```] = new Array("```
4= trim(rs("cname"))
5```","```
6= trim(rs("sid"))
7```","```
8= trim(rs("cid"))
9```");

count = count + 1
rs.movenext
loop
rs.close

 1onecount=```
 2=count
 3```;   
 4  
 5function changelocation(locationid)   
 6{   
 7document.form1.city.length = 0;   
 8  
 9var locationid=locationid;   
10var i;   
11for (i=0;i < onecount; i++)   
12{   
13if (subcat[i][1] == locationid)   
14{   
15document.form1.city.options[document.form1.city.length] = new Option(subcat[i][0], subcat[i][2]);   
16}   
17}   
18  
19}   
20</script>

1<script language="javascript">   
2<!--   
3function CheckForm()   
4{   
5document.form1.txtcontent.value=document.form1.doc_html.value;   
6return true   
7}   
8//-->   
9</script>

 1<body>
 2<form name="form1" onsubmit="check()">   
 3省份 ```
 4   
 5sql = "select * from sheng"   
 6rs.open sql,conn,1,1   
 7if rs.eof and rs.bof then   
 8response.write "请先添加省份。"   
 9response.end   
10else