Object-oriented JavaScript quiz

I have a quiz app that I wrote with ASP.NET MVC and jQuery, but in an effort to restructure the jQuery code, ended up with the code below:

var quizApp = {
        config: {
            getUrl: "/ETest/Quiz/GetRemTime",
            updateUrl: "/ETest/Quiz/UpdateStartTime",
            saveAnswerUrl: '/ETest/Quiz/SaveAnswer'
        },

        init: function (config) {
            $.extend(this.config, config);
            this.initializeTimer();
            this.prepareQuiz();
        },

        initializeTimer: function () {

            $.when(this.getTimerFromDB()).done(function (data) {
                var overallTime = data.message;

                function quizTimer() {

                    overallTime -= 1000;
                    var hours = Math.floor(overallTime / 36e5),
                        mins = Math.floor((overallTime % 36e5) / 6e4),
                        secs = Math.floor((overallTime % 6e4) / 1000);

                    if (hours < 10) {
                        hours = '0' + hours;
                    }

                    if (mins < 10) {
                        mins = '0' + mins;
                    }
                    if (secs < 10) {
                        secs = '0' + secs;
                    }

                    if (overallTime == 0) {
                        clearInterval(timerInterval);
                       this.exitQuiz();
                        return;
                    }

                    document.getElementById("countdown").innerHTML = "<p>" + hours + ':' + mins + ':' + secs + "</p>";

                }

                var timerInterval = setInterval(quizTimer, 1000);
            });
        },

        getTimerFromDB: function () {

                return $.ajax({
                    url: quizApp.config.getUrl,
                    dataType: 'json'
                });

        },
        prepareQuiz: function () {
            setInterval(function () {
                $.post(quizApp.config.updateUrl, { startTime: 5000 })
            }, 5000);


            var progress = $('#progress'),
                progressKeeper = $('#progressKeeper'),
                progressWidth = 930,
                notice = $("#notice"),
                questionLength = $('.questionContainer').size(),
                currentQuestion = 0;
            progressKeeper.hide();


            $("#main-quiz-holder input:radio").attr("checked", false);

            $('.notVisible').hide();
            $('.notVisible:first').fadeIn();
            notice.hide();
            $("ul.questionpager li a:first").addClass("active");

            $('.answers li input').click(function () {
                $(this).parents('.answers').children('li').removeClass("selected");
                $(this).parents('li').addClass('selected');
                var ansidd = $(this).attr("data-answer");
                var questId = $(this).attr("data-question");
                var answerData = { questionId: questId, selectedAnswer: ansidd };

                $.post(quizApp.config.saveAnswerUrl, answerData, function (d) {

                });

                notice.hide();
            });

            $('.quiz-pager').text('Question ' + Number(currentQuestion + 1) + ' of ' + questionLength);


            $('.btnNext').click(function () {

                var $questContainer = $(this).parents('.questionContainer'),
                    $nextquestContainer = $(this).next('.questionContainer');
                progressKeeper.show();


                $questContainer.fadeOut(500, function () {
                    $(this).next('.questionContainer').removeClass('hide').fadeIn(500);
                    currentQuestion = currentQuestion + 1;
                    $('.quiz-pager').text('Question ' + Number(currentQuestion + 1) + ' of ' + questionLength);
                });
                progress.animate({ width: progress.width() + Math.round(progressWidth / questionLength), }, 500);
                return false;
            });

            $('.btnPrev').click(function () {
                notice.hide();
                $(this).parents('.questionContainer').fadeOut(500, function () {
                    $(this).prev().fadeIn(500);
                    currentQuestion = currentQuestion - 1;
                    $('.quiz-pager').text('Question ' + Number(currentQuestion + 1) + ' of ' + questionLength);
                });

                progress.animate({ width: progress.width() - Math.round(progressWidth / questionLength), }, 500);
                return false;
            });

            $('.btnShowResult').click(function (e) {
                e.preventDefault();
                if ($('ul.answers li input[type=radio]:checked').length == 0) {
                    notice.html("You have not answered any question, please answer at least one question before submission!");
                    notice.fadeIn(300); return false;
                }
                notice.hide();

                this.exitQuiz();

            });
        },

        exitQuiz: function () {
            location.href = "/Etest/Quiz/Completed";
        }
    };

And the code is called like so:

 $(function () {
            var gUrl = '@Url.Action("GetRemTime", "Quiz", new { area = "Etest" })';
            quizApp.init({ getUrl: gUrl });
        });

Is there any way I can make this code better?