$(function() {
    $('a.page-scroll').bind('click', function(event) {
        var $anchor = $(this);
        var scrollTop = $($anchor.attr('href')).offset().top;
        if ($anchor.attr('href')=="#menu") scrollTop -= 50;
        $('html, body').stop().animate({
            scrollTop: scrollTop
        }, 1500, 'easeInOutExpo');
        event.preventDefault();
    });
});