Jim Fitzgerald rose from the board of directors to president and chairman of the Milwaukee Bucks in the mid-70's and owned the team during it's most successful sustained era in franchise history.  Fitzgerald died at his Janesville home Monday at the age of 86.  A cause of death was not immediately released.  Fitzgerald took over ownership of the Bucks in 1976, hired Don Nelson as coach and watched the Bucks win 7 consecutive division titles, reaching the NBA finals once.  He sold the team to current owner, US Senator Herb Kohl, in 1985.  Fitzgerald later became owner of the Golden State Warriors, again with Nelson as his coach.