private void cardReleased(MouseEvent evt) {
        CardLabel which = (CardLabel) evt.getComponent();
        int choice = 0;
        if (which == card1)
            choice = 0;
        else if (which == card2)
            choice = 1;
        else if (which == card3)
            choice = 2;
        else if (which == card4)
            choice = 3;
        else if (which == card5)
            choice = 4;
        else if (which == card6)
            choice = 5;
        else if (which == card7)
            choice = 6;
        
        int y = which.getY();
        int h = playingArea.getHeight();
        resetCards();
        
        if (y <= h + 80) {
            makeUserMove(choice);
        } else {
            makeUserDiscard(choice);
        }
    }