Wacky 1/2 AJo Hand

[Shillx]

I was playing some 1/2 last night for the 1st time to get a feel for the tables. I was just limping into lots of pots (no raising preflop) when this hand came up. What do you all make of this? No reads, table was real loose with an avg. pot of about 9 BB.

Party Poker 1/2 Hold'em (10 handed) converter

Preflop: Hero is CO with A[img]/images/graemlins/spade.gif[/img], J[img]/images/graemlins/club.gif[/img].
<font color="#666666">3 folds</font>, MP1 calls, MP2 calls, <font color="#666666">1 fold</font>, Hero calls, Button calls, <font color="#666666">1 fold</font>, BB checks.

Flop: (5.50 SB) T[img]/images/graemlins/spade.gif[/img], J[img]/images/graemlins/diamond.gif[/img], 3[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(5 players)</font>
BB checks, MP1 checks, MP2 checks, <font color="#CC3333">Hero bets</font>, Button folds, BB folds, MP1 calls, <font color="#CC3333">MP2 raises</font>, <font color="#CC3333">Hero 3-bets</font>, MP1 calls, <font color="#CC3333">MP2 caps</font>, Hero calls, MP1 calls.

Turn: (8.75 BB) 4[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(3 players)</font>
MP1 checks, MP2 checks, <font color="purple">Hero...?</font>

I've seen this before, and I pretty know what is going on here. How should I play this: bet or check? Also, what should I be prepared for on the river.

Shill