medium sized pot and c/r on the turn

[jt1]

Villian is a LAG. I think he's capable of bluff check raising scaries. But he's not a maniac. I'm not sure if I can call this raise or not.

Party Poker 3/6 Hold'em (6 max, 6 handed) converter

Preflop: Hero is BB with T[img]/images/graemlins/diamond.gif[/img], 5[img]/images/graemlins/diamond.gif[/img].
<font color="#666666">2 folds</font>, CO calls, <font color="#666666">1 fold</font>, SB completes, Hero checks.

Flop: (3 SB) T[img]/images/graemlins/heart.gif[/img], 6[img]/images/graemlins/heart.gif[/img], 8[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(3 players)</font>
<font color="#CC3333">SB bets</font>, <font color="#CC3333">Hero raises</font>, CO calls, SB calls.

Turn: (4.50 BB) A[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(3 players)</font>
SB checks, <font color="#CC3333">Hero bets</font>, CO folds, <font color="#CC3333">SB raises</font>,