AJ calling and calling and calling

Loose passive table, no individual reads yet. What do you think about this play?

Party Poker 1/2 Hold'em

PreFlop: <font color="blue">HERO</font> is MP with <font color="red">J[img]/images/graemlins/heart.gif[/img]</font> <font color="blue">A[img]/images/graemlins/diamond.gif[/img]</font> (9 Players)
UTG limps, 2 <font color="darkred">folds</font>, <font color="blue">HERO</font> <font color="darkgreen">raises</font>, MP2 calls, 1 <font color="darkred">fold</font>, Button <font color="darkgreen">raises</font>, 1 <font color="darkred">fold</font>, BB <font color="darkgreen">raises</font>, UTG calls, <font color="blue">HERO</font> calls, MP2 calls, Button calls,

Flop: (20.50 SB) <font color="black">9[img]/images/graemlins/spade.gif[/img]</font> <font color="black">7[img]/images/graemlins/spade.gif[/img]</font> <font color="blue">J[img]/images/graemlins/diamond.gif[/img]</font> (5 Players)
BB <font color="green">bets</font>, UTG calls, <font color="blue">HERO</font> calls, MP2 calls, Button <font color="darkgreen">raises</font>, BB calls, UTG calls, <font color="blue">HERO</font> calls, MP2 <font color="darkred">folds</font>,

Turn: (14.75 BB) <font color="black">9[img]/images/graemlins/spade.gif[/img]</font> <font color="black">7[img]/images/graemlins/spade.gif[/img]</font> <font color="blue">J[img]/images/graemlins/diamond.gif[/img]</font> <font color="black">6[img]/images/graemlins/spade.gif[/img]</font> (4 Players)
BB <font color="green">bets</font>, UTG <font color="darkred">folds</font>, <font color="blue">HERO</font> calls, Button calls,

River: (17.75 BB) <font color="black">9[img]/images/graemlins/spade.gif[/img]</font> <font color="black">7[img]/images/graemlins/spade.gif[/img]</font> <font color="blue">J[img]/images/graemlins/diamond.gif[/img]</font> <font color="black">6[img]/images/graemlins/spade.gif[/img]</font> <font color="black">4[img]/images/graemlins/spade.gif[/img]</font> (3 Players)
BB <font color="green">bets</font>, <font color="blue">HERO</font> <font color="darkred">folds</font>, Button is all-In, BB calls,

Final Pot: 20.59 BB