JJ play: good laydonw or got bluffed?

[bk1]

Party Poker
No Limit Holdem Ring game
Blinds: $0.25/$0.50
5 players
Converter

Total number of players : 6
Seat 1: nickolsj ( $28.72)
Seat 2: faruge2 ( $55.18)
Seat 3: BadLoser2006 ( $79.48)
Seat 4: blogreg ( $37.15)
Seat 5: Hero ( $54.45)
Seat 6: Richy0069 ( $60.26)
nickolsj posts small blind (0.25)
BadLoser2006 posts big blind (0.50)


Pre-flop: (5 players) Hero is CO with J [img]/images/graemlins/spade.gif[/img] J [img]/images/graemlins/club.gif[/img]
UTG raises to $1, Hero raises to $3, Button calls, 2 folds, UTG calls.


Flop: 9 [img]/images/graemlins/club.gif[/img] 7 [img]/images/graemlins/heart.gif[/img] 6 [img]/images/graemlins/spade.gif[/img] ($9.75, 3 players)
UTG bets $0.5, Hero raises to $9, Button raises all-in $57.26, UTG folds, Hero folds.
Uncalled bets: $48.26 returned to Button.


Results:
Final pot: $28.25

how the hell do you play this?

I had to put him on sets...

what do you think?

how should I play this hand?