ASP：判断访问是否来自搜索引擎的函数

<%
'检查当前用户是否是蜘蛛人
Function check(user_agent)
    allow_agent=split("Baiduspider,Scooter,ia_archiver,Googlebot,FAST-WebCrawler,MSNBOT,Slurp",",")
    check_agent=false
    For agenti=lbound(allow_agent) to ubound(allow_agent)
        If instr(user_agent,allow_agent(agenti))>0 then
            check_agent=true
            exit for
        end if
    Next
    check=check_agent
End function
user_agent=Request.ServerVariables("HTTP_USER_AGENT")
'check(user_agent)=true则判定访问为蜘蛛人
%>

注：本函数来源于网上，是否可用有待验证！