Create custom advanced script for facebook (private message send to all users)

i need a custom script built so when users visit my website they first come to a page where they enter there facebook ID and password, from then it should send a personal message to all friends on there list (even if its upto 5,000) I know facebook blocked even a manual way to do this.. but i have found a video that shows it is possible and i want a scrip to REPLATE THIS METHOD AUTOMATICALLY, so all user does at my site is enter facebook id and password and script works in background sending a message to all users with a link promoting my site creating a very efficient invite a friend feature. You can see the video via you tube by following this link>>> This is obviously the manual process so we need to make this automated using some advanced script, perhaps in some way replicating entering the alphabet as shown in video, [login to view URL]