如何控制首页不重复显示同一客户发布的产品

<META http-equiv=Content-Type content="text/html; charset=gb2312">
<!--最新图文代码开始-->
<script language="JavaScript">
<!--
var flag=false;
function DrawImage(ImgD){
var image=new Image();
image.src=ImgD.src;
if(image.width>0 && image.height>0){
  flag=true;
  if(image.width/image.height>= 122/100){
   if(image.width>122){
    ImgD.width=122;
    ImgD.height=100;
   }else{
    ImgD.width=image.width;
    ImgD.height=image.height;
   }
   ImgD.alt="点击查看详细信息...";
  }
  else{
   if(image.height>100){
    ImgD.height=100;
    ImgD.width=122;
   }else{
    ImgD.width=image.width;
    ImgD.height=image.height;
   }
   ImgD.alt="点击查看详细信息...";
  }
}
}
//-->
</script>
<%
Const New_img=15     
set rs_Products=server.createobject("adodb.recordset")
sqltext="select top " & New_img & " * from product_pic  order by date desc"
rs_Products.open sqltext,conn,1,1
if not rs_Products.EOF then


%>



<div align='center' id='demo' style='overflow:hidden;height:140px;width:570px;'><!--滚动区的高度和宽度-->
<table align='center' cellpadding='0' cellspace='0' border='0'>
<tr>
    <td id='demo1' valign='top'>
        <table width='100%' cellpadding='0' cellspacing='0' border='0' align='center'>
        <tr valign='top'>
    <%
    while not rs_Products.EOF
    userid=rs_Products("userid")
    %>
    <%
   
set rs_c=server.createobject("adodb.recordset")
sql_c="select  * from company  where userid='"&userid&"' "
rs_c.open sql_c,conn,1,1

%>
   
            <td align='center'>
                <TABLE width=100% border=0 align=center cellPadding=0 cellSpacing=0>
                <TR>
                    <TD width=8 rowspan=3 > </TD>
                    <TD vAlign=top><img src="img/pruct_1.gif" width="136" height="8" /></TD>
                    <TD width=7 rowspan=3 vAlign=top> </TD>
                </TR>
                <TR>
                    <TD height="85" background='img/pruct_2.gif'>
                        <a href='0795mp/company_mingpian.asp?id=<%=trim(rs_c("id"))%>&typename=<%=trim(rs_c("typename"))%>' target=_blank title='<%=rs_Products("product_name")%>'>
        
                             <img src="uppic/product/<%=rs_Products("pic")%>" alt="<%=rs_Products("product_name")%>" width="122" height="112" hspace="7" border="0" onload="javascript:DrawImage(this);">
        
                    </a>                  </TD>
                  </TR>
                <TR>
                    <TD><img src="img/pruct_3.gif" width="136" height="8" /></TD>
                  </TR>
              <TR>
                  <TD> </TD>
                    <TD align=center valign='top'><a href='uppic/product/<%=rs_Products("pic")%>' target="_blank" title='<%=rs_Products("product_name")%>'><%=left(rs_Products("product_name"),8)%></a></TD>
                     <TD> </TD>
                </TR>
                 </TABLE>
            </td>
      <%
      rs_Products.MoveNext
    wend
    %>
        </tr>
        </table>
    </td>
    <td id=demo2 valign=top></td>
</tr>
</table>
</div>
   <%if New_img >5 then%>
<script>
var Picspeed=1
demo2.innerHTML=demo1.innerHTML
function Marquee1(){
if(demo2.offsetWidth-demo.scrollLeft<=0)
demo.scrollLeft-=demo1.offsetWidth
else{
demo.scrollLeft++
}
}
var MyMar1=setInterval(Marquee1,Picspeed)
demo.onmouseover=function() {clearInterval(MyMar1)}
demo.onmouseout=function() {MyMar1=setInterval(Marquee1,Picspeed)}
</script>
    <%end if
else
    Response.Write "暂 无 最 新 图 文"
end if
rs_Products.close
set rs_Products=nothing
rs_c.close
set rs_c=nothing
%>
<!--最新图文代码结束-->