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