Please help settle this arguement. I just sat down at the table and am wondering about river raise.

Party Poker 10/20 Hold'em (6 max, 6 handed) FTR converter on zerodivide.cx

Preflop: Hero is SB with 9[img]/images/graemlins/heart.gif[/img], A[img]/images/graemlins/heart.gif[/img].
<font color="#666666">4 folds</font>, <font color="#CC3333">Hero raises</font>, BB calls.

Flop: (4 SB) A[img]/images/graemlins/spade.gif[/img], 7[img]/images/graemlins/diamond.gif[/img], 5[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">Hero bets</font>, <font color="#CC3333">BB raises</font>, Hero calls.

Turn: (4 BB) 9[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(2 players)</font>
Hero checks, <font color="#CC3333">BB bets</font>, <font color="#CC3333">Hero raises</font>, BB calls.

River: (8 BB) 8[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(2 players)</font>