为什么显示不了记录

<!--#include file="conn.asp"-->
<table width="748" border="0" align="center">
<tr bgcolor="#CCCCCC">
<td>标题</td>
<td>有效日期</td>
<td>联系人</td>
<td>联系方式</td>
</tr>

<%

dim objrs ,sql
sql="select proname, data,person,tel from tbbuy"
set objrs =server.createobject("adodb.recordset")

objrs.open sql ,cnn ,1,1

sub showpage (objrs,pageno)

objrs.absolutepage=pageno
for i=1 to objrs.pagesize


response.write "<TR><td>"&objrs("proname")&"</td>"
response.write "<td>"&objrs("data")&"</td>"
response.write"<td>"&objrs("person")&"</td>"
response.write"<td>"&objrs("tel")&"</td></tr>"
objrs.movenext
if objrs.eof then exit for
next
response.write "</table>"
end sub

objrs.pagesize=5

for i=1 to objrs.pagecount

response.write"<A HREF='paging.asp?page="&i&"'>"&i&"&nbsp;"&""
next

pageno=request("page")
if pageno<>""then
showpage objrs.pageno
end if
response.write "共"&objrs.pagecount&"页"

objrs.close
set objrs=nothing
cnn.close
set cnn=nothing
%>