var totalSlides = 0;
var currentSlide = 1;
var contentSlides = "";

$(document).ready(function () {
    $(".slideBack").click(showPreviousSlide);
    $(".slideNext").click(showNextSlide);

    var totalWidth = 0;
    contentSlides = $(".sliderItem");
    contentSlides.each(function (i) {
        totalWidth += this.clientWidth;
        totalSlides++;
    });
    totalSlides--;
    $(".innerWrapper").width(totalWidth);
    $(".haberWrapper").attr({ scrollLeft: 0 });
});

function showPreviousSlide() {
    if (currentSlide > 1) currentSlide--;
    else currentSlide = totalSlides;
    updateContentHolder();
}

function showNextSlide() {
    if (currentSlide < totalSlides) currentSlide++;
    else currentSlide = 1;
    updateContentHolder();
}

function updateContentHolder() {
    var scrollAmount = 0;
    contentSlides.each(function (i) {
        if (currentSlide - 1 > i) {
            scrollAmount += this.clientWidth;
        }
    });
    $(".haberWrapper").animate({ scrollLeft: scrollAmount }, 1000);
}