400NL: KJ toptwo faces river push

[joeblack]

Villian is 34/11/2.7 over 169 hands. No personal history between us.

Absolute Poker
No Limit Holdem Ring game
Blinds: $2/$4
6 players
Converter

Stack sizes:
UTG: $1122.80
UTG+1: $226.50
CO: $327.40
Button: $861.80
HERO: $421.60
BB: $139.50

Pre-flop: (6 players) HERO is SB with J[img]/images/graemlins/diamond.gif[/img] K[img]/images/graemlins/club.gif[/img]
UTG folds, UTG+1 calls, CO folds, Button calls, HERO calls, BB checks.

Flop: 3[img]/images/graemlins/club.gif[/img] 6[img]/images/graemlins/club.gif[/img] J[img]/images/graemlins/heart.gif[/img] ($16, 4 players)
<font color="#cc0000">HERO bets $12</font>, BB folds, UTG+1 calls, <font color="#cc0000">Button raises to $40</font>, HERO calls, UTG+1 folds.

Turn: K[img]/images/graemlins/heart.gif[/img] ($108, 2 players)
HERO checks, <font color="#cc0000">Button bets $96</font>, HERO calls.

River: 3[img]/images/graemlins/spade.gif[/img] ($300, 2 players)
HERO checks, <font color="#cc0000">Button bets $304</font>, <font color="#cc0000">HERO ???</font>.

Do you call river push? Are we only beating a bluff?