River decision w/KJs

[Veron]

Villain is 40/7/1 over 50 hands. Clearly a bad player but no real reads...

UTG ($396)
MP ($505.11)
<font color="#C00000">Hero ($440.10)</font>
<font color="#C00000">Button ($266.50)</font>
SB ($360)
BB ($1)

Preflop: Hero is CO with J[img]/images/graemlins/diamond.gif[/img], K[img]/images/graemlins/diamond.gif[/img].
<font color="#666666">2 folds</font>, <font color="#CC3333">Hero raises to $16</font>, Button calls $16, <font color="#666666">2 folds</font>.

Flop: ($38) J[img]/images/graemlins/heart.gif[/img], 2[img]/images/graemlins/heart.gif[/img], 5[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">Hero bets $26</font>, Button calls $26.

Turn: ($90) 7[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">Hero bets $64</font>, Button calls $64.

River: ($218) 7[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(2 players)</font>
Hero ??


Villain has about 160$ left on the rvr, What it do?

edit: typo