一个简单的问题--关于页面记录个数的

<%
           sql="select a,b,c from student"
           set rs=server.createobject("adodb.recordset")
           rs.open sql,conn,1,1
           page_size=5
           rs.PageSize = page_size
           totalpages = rs.PageCount
           totalrecords = rs.RecordCount
           page=cint(request("page"))
           if page>totalpages then page=totalpages
           if page<1 then page=1
           rs.absolutepage = page
          %>
      <% do while not rs.eof %>
          <tr>
            <td height="27" align="center" class="kk"><%=rs("a")%></td>
            <td align="center" valign="middle" class="kk"><%=rs("b")%></td>
            <td align="center" class="kk"><%=rs("c")%></td>
            <td class="kk"><a href="detail.asp">详细信息</a></td>
          </tr>
          <%
           rs.movenext
           loop
          %>
不什么打开网页的时候,每一页的记录个数都不一样呢???我明明已经定义了页面大小了呀??