ASP中限制某些字符留言评论

Sub CheckCanSubmit(str)
 Dim connt,connts
 connt="六合彩,免费电影,安利,http,www,<a" 
 connts = split(connt,",") 
 For each glword in connts 
  if instr(str,glword)<>0 then 
  Response.Write("<script>alert(操作非法);window.history.go(-1);</script>")
  Response.End()
  end if 
 next 
End Sub