各位大虾下弟又有问题了

[shanoonfly]

<select name=tab_id>
<%
sql="select * from Czren_tableinfo "

et rs=server.createobject("adodb.recordset")
rs.open sql,conn,3,1

if not rs.eof then
while not rs.eof
response.write "<option value="&rs("tab_id")&" selected>"&rs("tab_name")&"</option>"
rs.movenext
wend
end if
%>
</select>

<script language=vbscript>
sub baby()
location.href="zd_show.asp?tab_id="&tab_id&""
end sub
</script>
我怎样才能把上面的tab_id 带到下面的vbs中

[passionke]

location.href="zd_show.asp?tab_id=<%=document.tab_id.value%>"

[xiaobird1]

location.href="zd_show.asp?tab_id=<%=rs("tab_id")%>"

[dsclub]

location.href="zd_show.asp?tab_id=<%=rs.fields("tab_id").value%>"