JJ after a weakish hand

[JMa]

Villain is unknown. Pretty new to the table.

Party Poker No-Limit Hold'em, $ BB (6 handed) converter

Hero ($2144)
BB ($2124)
UTG ($2152)
MP ($2201)
CO ($2957.02)
Button ($1177)

Preflop: Hero is SB with A[img]/images/graemlins/club.gif[/img], Q[img]/images/graemlins/club.gif[/img]. Hero posts a blind of $10.
<font color="#666666">3 folds</font>, <font color="#CC3333">Button raises to $70</font>, <font color="#CC3333">Hero (poster) raises to $150</font>, <font color="#666666">1 fold</font>, Button calls $90.

Flop: ($340) K[img]/images/graemlins/club.gif[/img], 6[img]/images/graemlins/diamond.gif[/img], 3[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">Hero bets $200</font>, <font color="#CC3333">Button raises to $400</font>, Hero folds.

Final Pot: $940

2 hands later this happens:

Party Poker No-Limit Hold'em, $ BB (6 handed) converter

Hero ($2000)
Button ($2094)
SB ($2132)
BB ($2231)
UTG ($2957.02)
MP ($1554)

Preflop: Hero is CO with J[img]/images/graemlins/club.gif[/img], J[img]/images/graemlins/diamond.gif[/img]. SB posts a blind of $10.
<font color="#666666">1 fold</font>, <font color="#CC3333">MP raises to $60</font>, <font color="#CC3333">Hero raises to $200</font>, <font color="#666666">3 folds</font>, <font color="#CC3333">MP raises to $700</font>.

Normally, Id just fold this right away. I thought that maybe he thinks I reraise alot preflop with thrash and fold to any resistance, so maybe he has a low PP/AKish or so.

Anybody call/moves in here?