It looks to have been deleted by the author after it was accepted for publication, don't know why. The site has no control over that: if an author decides something he wrote is not appropriate for whatever reason, they can "pull it" whenever they want.
Sent from my Amstrad PC 1640 Never throw anything away, Griff Bad command or file name. Bad, bad command! Sit! Stay! Staaaay... AntiTwitter: @DalekDave is now a follower!