SB vs Button 4bet vs AJs - simple preflop

[23act]

2nd Hand at table. I won a big pot on first hand by stacking some dude with a flopped straight.

Button is 24/17 from datamining.

Given that i hav just won a big pot (and hav a good image) and villians stats whats the standard move?

Party Poker
No Limit Holdem Ring game
Blinds: $1/$2
4 players
Converter

Stack sizes:
UTG: $254.25
Button: $206
HERO: $388.90
BB: $243.35

Pre-flop: (4 players) HERO is SB with A[img]/images/graemlins/club.gif[/img] J[img]/images/graemlins/club.gif[/img]
UTG folds, <font color="#cc0000">Button raises to $6</font>, <font color="#cc0000">HERO raises to $20</font>, BB folds, <font color="#cc0000">Button raises to $56</font>, HERO ...

[Jigsaws]

Easy fold, especially with a good image.

[carnivalhobo]

56 is a weird size IMO, ive shoved over some suspicious 4bets and gotten folds before, but this doesnt look like a great spot. id also prefer a SC.