($12) QQ limp-reraised PF

[Pocketbear]

Full Tilt Poker
No Limit Holdem Tournament
Blinds: t30/t60
8 players
Converter

Stack sizes:
UTG: t1940
UTG+1: t1405
MP1: t1230
MP2: t1365
CO: t1535
Hero: t1775
SB: t3190
BB: t1060

Pre-flop: (8 players) Hero is Button with Q[img]/images/graemlins/club.gif[/img] Q[img]/images/graemlins/heart.gif[/img]
4 folds, CO calls t60 <font color="aaaaaa">(pot was t90)</font>, <font color="#cc0000">Hero raises to t240</font>, SB folds, BB calls t180 <font color="aaaaaa">(pot was t390)</font>, <font color="#cc0000">CO raises to t780</font>, Hero?

CO hasn't done anything out of the line so far. Would you push or fold?