Could some tell me what the tie breaking procedure is between two teams in the same division with the same record ?

We more or less follow the same procedures as the NFL:

http://www.nfl.com/standings/tiebreakingprocedures

I say more or less because some of the deeper, more complicated tests are skipped just because they will rarely be used vs. the amount of time it would take to build the algorithms, so the coin toss is slightly higher than it is in this list. I haven't yet been aware of a tiebreaker that fell to a coin toss here.