<%
if session("xh")="" then session("xh")=0
sql="select introduce from Title where class='"&session("xh")&"'"
set rs1=server.CreateObject("ADODB.RECORDSET")
rs1.open sql,conn,1,1
if rs1.eof then
response.Write("")
else
response.Write(rs1("introduce"))
rs1.close
end if
%>
