$(document).ready(function () {
    var speed = 5000;
    $('#img_scroller_mask-gallery, #img_scroller_gallery li').width($('#img_scroller_slider').width());
    $('#img_scroller_gallery').width($('#img_scroller_slider').width() * $('#img_scroller_gallery li').length);
    $('#img_scroller_mask-gallery, #img_scroller_gallery li, #img_scroller_mask-excerpt, #img_scroller_excerpt li').height($('#img_scroller_slider').height());
    $('#img_scroller_gallery li:first, #img_scroller_excerpt li:first').addClass('selected');
    $('#img_scroller_btn-next').click(function () {
        newsscoller(0);
        return false
    });
    $('#img_scroller_btn-prev').click(function () {
        newsscoller(1);
        return false
    });

});

function newsscoller(prev) {
    var current_image = $('#img_scroller_gallery li.selected').length ? $('#img_scroller_gallery li.selected') : $('#img_scroller_gallery li:first');
    var current_excerpt = $('#img_scroller_excerpt li.selected').length ? $('#img_scroller_excerpt li.selected') : $('#img_scroller_excerpt li:first');
    if (prev) {
        var next_image = (current_image.prev().length) ? current_image.prev() : $('#img_scroller_gallery li:last');
        var next_excerpt = (current_excerpt.prev().length) ? current_excerpt.prev() : $('#img_scroller_excerpt li:last')
    } else {
        var next_image = (current_image.next().length) ? current_image.next() : $('#img_scroller_gallery li:first');
        var next_excerpt = (current_excerpt.next().length) ? current_excerpt.next() : $('#img_scroller_excerpt li:first')
    }
    $('#img_scroller_excerpt li, #img_scroller_gallery li').removeClass('selected');
    next_image.addClass('selected');
    next_excerpt.addClass('selected');
    $('#img_scroller_mask-gallery').scrollTo(next_image, 800);
    $('#img_scroller_mask-excerpt').scrollTo(next_excerpt, 800)
}