禁止从站点外部提交数据

server_vv=len(Request.ServerVariables("SERVER_NAME"))
server_v1=left(Cstr(Request.ServerVariables("HTTP_REFERER")),server_vv)
server_v2=left(Cstr("http://"&Request.ServerVariables("SERVER_NAME")),server_vv)
if server_v1<>server_v2 and server_v1<>"" and server_v2<>"" then
response.write("<script>alert('错误：禁止从站点外部提交数据!.')</script>")
response.end
end if