SANTA CLARA, Calif. -- Hold this link close to you over the next six weeks.It is our NFL Playoff Machine. It's become an annual must-have as the NFL season winds down.This is of particular importance for San Francisco 49ers fans as their current two-game losing skid has put them on the playoff brink with six weeks to go in the regular season.The 49ers, 6-4, are currently on pace to be the sixth and final playoff team in the NFC.