the day before yesterday , i found a new nekobe's AJAX shoutbox and Pierre's AJAx shoutbox .
so i use my leisure to combined the "mixed version" to defend the spam.
I use the "Pierre's way" to do the first shield and the "nekobe's way" to do the last shield.
The "Pierre's way" can let me reduce to ban the spammer's IP.
I put the file here . if you need just to take it.
Ps:
thanks to nekobe and Pierre first.
I just talk with Nekobe elder , he think a new way to defend the spam , but not to do it , he think bannimg the spammer's ip is enough to him.
the new way is use a <input type hidden> , when you click submit button , use the javascript to insert some thing.
Maybe this way is feasible.