jQuery Smooth Scroll activation code

        // jQuery smooth scroll
        $('.smooth-scroll').bind('click', function(event) {
            var $anchor = $(this);
            var headerH = '30';
            $('html, body').stop().animate({
                scrollTop : $($anchor.attr('href')).offset().top - headerH + "px"
            }, 1200, 'easeInOutExpo');

            event.preventDefault();
        });