At this point I would not fold JJ, maybe the lower pairs. If I had no idea on your stats/playstyle I would fold those hands. I actually did fold exactly JJ to you a few hands earlier when you called on the button and raised a 457 w/flush draw board on the flop.
POKERSTARS GAME #9224273035: HOLD'EM NO LIMIT ($1/$2) - 2007/04/02 - 23:09:18 (ET)
Table 'Lyalya' 6-max Seat #1 is the button
Seat 1: teenabill ($46.05 in chips)
Seat 2: lifes3ps ($213.60 in chips)
Seat 4: perschonrs38 ($208.60 in chips)
Seat 5: dNoUnTkSe ($229 in chips)
Seat 6: redgrape ($200 in chips)
lifes3ps: posts small blind $1
perschonrs38: posts big blind $2
*** HOLE CARDS ***
Dealt to dNoUnTkSe [Jc Jh]
dNoUnTkSe: raises $6 to $8
redgrape: calls $8
teenabill: folds
lifes3ps: folds
perschonrs38: folds
*** FLOP *** [7s 5c 4c]
dNoUnTkSe: bets $12
redgrape: raises $24 to $36

What'd you have then? :P