scrollIntoView.js

function scrollIntoView($element) {
    var scrollTop = 0;

    if ($element.length) {
        scrollTop = $element.offset().top -
            $('#headerwrap')[0].clientHeight - 40;

        window.scrollTo(0, scrollTop);
    }
}

$(document).on('ready', function () {
    if (window.location.hash) {
        var hash = window.location.hash;
        var $element = $(hash);

        setTimeout(function() {
            scrollIntoView($element);
        }, 1000);
    }

    $('[data-scrollto]').on('click', function (event) {
        event.preventDefault();

        scrollIntoView($($(this).attr('href')));
    });
});