critique (bad play leads to tough decision)

[fireman664]

Somewhat early in a Party $100. I just got moved to a new table about 4 hands before this hand. I have $T6000 (avg is around $T3000) or so in chips, and am covered by the player to my right (barely). The blinds are $50-$100.

I am the BigBlind, and pick up JJ. It is folded around to the small blind (table chip leader), and he makes it $200 to go. I smooth call.

flop comes 6 [img]/images/graemlins/club.gif[/img] 7 [img]/images/graemlins/club.gif[/img] 8 [img]/images/graemlins/heart.gif[/img]

He bets $100. I raise to $500. He instantly pushes all in. (roughly $6K into a $1K pot)

What is my play??