Scroll to

(function ($) {

    "use strict";

    $(document).ready(function () {
         /* Scroll to */
        $("a[href^='#']").click(function (e) {

            if ($(this).attr("href") !== "#!" && $($(this).attr("href")).length) {

                e.preventDefault();

                var additionalSpace = 20;

                // Header bar when already scrolled
                if ($(".masthead").length) {
                    additionalSpace += $(".masthead").height();
                }

                // If user is logged-in
                if ($("#wpadminbar").length) {
                    additionalSpace += $("#wpadminbar").height();
                }

                $("html, body").animate({
                    scrollTop: $($(this).attr("href")).offset().top - additionalSpace
                }, 500);
            }
        });
    });
}(jQuery));