53 

    53 

    54     int nextId(bool &removeFromStack) const;

    54     int nextId(bool &removeFromStack) const;

    55 

    55 

    56     int previousTriggered();

    56     int previousTriggered();

    57 

    57 

    60     bool showPage();

    58     bool showPage();

    61 

    59 

    62 private:

    60 private:

    63     int computeRandNumber();

    61     int computeRandNumber();

    64 

    62