function lowerCase(ans) {
        var lowCase = ans.toLowerCase();
        return lowerCase;
    }



    var questions = ['How may strings does a violin have?', 'How many sides does an octagon have?',
                    'How many NBA championships did Michael Jordan win with the Chicago Bulls?'];
    var answers = ['FOUR','EIGHT','SIX'];

    var score = 0;

    function quiz(counter) {
        var guesses = 3;



    while (guesses > 0) {
        var ans = prompt(questions[counter]);
        if (ans == answers[counter]) {
            alert("Correct!");
            return guesses;
        } else {
            guesses--;
            alert("Incorrect, You have " +guesses+ " guesses remaining");
        }
    }
        return 0;
    }

document.write(lowerCase(ans));