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