FR-25NL-I folded JJ to a re-raise on the turn

[masterSilviu]

PokerStars No-Limit Hold'em, $0.25 BB (9 handed) internettexasholdem.com

BB ($26.45)
Hero ($21.80)
UTG+1 ($48.55)
MP1 ($24.10)
MP2 ($24.60)
MP3 ($26.55)
CO ($30.75)
Button ($16.65)
SB ($13.45)

Preflop: Hero is UTG with J[img]/images/graemlins/heart.gif[/img], J[img]/images/graemlins/club.gif[/img].
<font color="#CC3333">Hero raises to $1.25</font>, <font color="#666666">2 folds</font>, MP2 calls $1.25, <font color="#666666">5 folds</font>.

Flop: ($2.85) 3[img]/images/graemlins/heart.gif[/img], 2[img]/images/graemlins/club.gif[/img], 4[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">Hero bets $3</font>, <font color="#CC3333">MP2 raises to $7</font>, Hero calls $4.

Turn: ($16.85) K[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">Hero bets $5</font>, <font color="#CC3333">MP2 raises to $15</font>, Hero folds.

Final Pot: $36.85

Was my fold good or should I have folded on the flop?