(function( $ ) {

    $('a[href*=#]:not([href=#])').click(function() {

        if (location.pathname.replace(/^\//,'') == this.pathname.replace(/^\//,'') && location.hostname == this.hostname) {

            var target = $(this.hash);
            var target_id = target.attr('id');
            target = target.length ? target : $('[name=' + this.hash.slice(1) +']');
            if (target.length) {
                $('#navigation .current-menu-item').removeClass('current-menu-item');
                $('#navigation a[href="#' + target_id + '"]').closest('li').addClass('current-menu-item');
                $('html,body').animate({
                    scrollTop: target.offset().top - $('#header').outerHeight()
                }, 1000);
                return false;
            }

        }

    });

})( jQuery );