OK to ColdCall preflop on button?

[Sirocko]

Playing against standard mediumlimit players, decent preflop, pretty poor postflop.

What is the preflop action on the following hands? Fold, 3bet or ColdCall?

Party Poker
Limit Holdem Ring game
Limit: $15/$30
5 players
Converter

Pre-flop: (5 players) Hero is Button with :qs :js
UTG calls, [color=#cc0000]CO raises</font>, Hero calls, SB calls, BB calls, UTG calls.

Flop: :ad :4h :as (10SB, 5 players)
SB checks, [color=#cc0000]BB bets</font>, UTG calls, CO folds, Hero folds, SB calls.

Party Poker
Limit Holdem Ring game
Limit: $20/$40
6 players
Converter

Pre-flop: (6 players) Hero is Button with :qd :jd
UTG calls, UTG+1 folds, [color=#cc0000]CO raises</font>, Hero folds, 2 folds, UTG calls.

Results:
Final pot: 5.5SB

[smurfitup]

depends on the pfr and the blinds. i don't mind the call if the blinds are loose.

[LukeSLTS]

I like the cold call better than three betting or folding. Good chance for a four or five way pot which QJs needs to be profitable here.

[Scary_Tiger]

3-bet hand one, call hand two.

[ackid]

3-pop it.