[求助]非常郁闷的问题

我做留言分页处理的时候，在分页显示的下面有多出了一条留言，而且这条留言是下一页的开始的那一天留言，当留言显示尾页　的时候，分页下面也就没有了留言了，有谁知道这是怎么回师啊，搞了几天了都没有看出来哪里错了，请高手指教啊，感激不尽，谢谢！
代码：
<%
set conn=server.createobject("adodb.connection")
DSNtemp = "Driver={Microsoft Access Driver (*.mdb)};"
DSNtemp = DSNtemp & "DBQ=" & server.mappath("xuesheng.mdb")
conn.open DSNtemp
set rs=Server.CreateObject("adodb.recordset")
sql ="select * from ly order by id desc"
rs.open sql,conn,1,1

if rs.eof and rs.bof then
response.Write("暂时还没有任何留言！")
else
totalput=rs.recordcount
response.Write(totalput)
listnum=10
rs.pagesize=listnum
if currentpage<1 then
currentpage=1
end if
if (currentpage-1)*listnum > totalput then
if (totalput mod listnum)=0 then
currentpage=totalput \ listnum
else
currentpage=totaaput \ listnum + 1
end if
end if
if currentpage=1 then
showContent
showpage totalput,listnum,"liuyan0.asp"
else
if (currentpage-1)* listnum < totalput then
rs.move (currentpage-1)*listnum
showContent
showpage totalput,listnum,"liuyan0.asp"
else
currentpage=1
showContent
showpage totalput,listnum,"liuyan0.asp"
end if
end if
rs.close
end if
set rs=nothing
conn.close
set conn=nothing
%>
<%
ly=replace(ly,chr(13)&chr(10),"<br>")
sub showcontent
do while not rs.eof
response.Write("<hr / color='blue' width='60%'>")
response.Write("<table border='1' bordercolor='red' width='60%'align='center'>")
response.Write("<tr>")
response.Write("<td>编号：</td>"&"<td>"&rs("id")&"</td>")
response.Write("</tr>")
response.Write("<tr>")
response.Write("<td>姓名：</td>"&"<td>"&rs("name")&"</td>")
response.Write("</tr>")
response.Write("<tr>")
response.Write("<td>留言：</td>"&"<td>"&rs("ly")&"</td>")
response.Write("</tr>")
response.Write("<tr>")
response.Write("<td>性别：</td>"&"<td>"&rs("sex")&"</td>")
response.Write("</tr>")
a=a+1
if a>listnum then exit do
rs.movenext
response.Write("</table>")
loop
end sub
%>
<%
function showpage(totalnumber,listnum,filename)
dim n
if totalnumber mod listnum=0 then
n=totalnumber \ listnum
else
n=totalnumber \ listnum + 1
end if
response.write "<form method=post action="&filename&">"
response.write "　"
if CurrentPage<2 then
response.write "<font color='#000080'>首页 上一页</font> "
else
response.write "<a href="&filename&"?page=1>首页</a> "
response.write "<a href="&filename&"?page="&CurrentPage-1&">上一页</a> "
end if
if n-currentpage<1 then
response.write "<font color='#000080'>下一页 尾页</font>"
else
response.write "<a href="&filename&"?page="&(CurrentPage+1)&">下一页</a> "
response.write "<a href="&filename&"?page="&n&">尾页</a>"
end if
response.write "<font color='#000080'> 共<b>"&totalput&"</b>条留言 每页<b>"&listnum&"</b>条留言</font> "
'response.write "<font color='#000080'>转到：</font><input class=smallInput type='text' name='page' size=4 maxlength=10 value="&Currentpage&">"
'response.write "<input class=buttonface type='submit' value='Go' name='cndok'></form>"
end function
%>