$(function () {

    // Smooth loading.
    var smoothLoading = $('.smooth-loading');
    smoothLoading.css('opacity', 0);
    smoothLoading.css('display', 'block');
    smoothLoading.css('opacity', 1);
});

$(document).scroll(function () {
    var scroll = $(document).scrollTop();
    var windowWidth = $(window).width() + 16; // 16px = fix
    var mobileViewport = 767;

    // Scripts for Desktop and Mobile
    if (windowWidth > mobileViewport && !(/Android|webOS|iPhone|iPad|iPod|BlackBerry|IEMobile|Opera Mini/i.test(navigator.userAgent))) {
        if (scroll >= 600) {
            $("header").addClass("sticky");
        } else {
            $("header").removeClass("sticky");
        }
    }
    else if (windowWidth < mobileViewport && (/Android|webOS|iPhone|iPad|iPod|BlackBerry|IEMobile|Opera Mini/i.test(navigator.userAgent))) {
        if (scroll >= 400) {
            $("header").addClass("sticky");
        } else {
            $("header").removeClass("sticky");
        }
    }
});