[求助]哪个地方有非法字符

谁可以帮我看一看这一段代码，哪个地方有非法字符了？并帮我改正好吗？






<!--#include file="dbpath/dbpath.asp"-->
<%response.expires=0
if request.cookies("loginok")="" then
response.redirect "login.asp"
end if

%>
<%
dim delesql
dim useridtxt
dim pagetxt
useridtxt = Request("userid")
pagetxt = Request("cpage")
delesql="DELETE FROM Book WHERE id=" & useridtxt
conn.Execute delesql
set conn=nothing
response.redirect "manage.asp?page=" & pagetxt
%>