Smooth scrolling anchor links with jQuery. This script was taken from http://www.paulund.co.uk/smooth-scroll-to-internal-links-with-jquery . I modified it to fix a bug when using it with anchor links pointing to the top of the page ('#').

gistfile1.js

$('a[href^="#"]').on('click',function (e) {
    e.preventDefault();
    var target = this.hash,
    $target = $(target);
    $('html, body').stop().animate({
        'scrollTop': ($target.offset()) ? $target.offset().top : 0
    }, 400, 'ease', function () { // Set the duration and easing function as desired.
        window.location.hash = target;
    });
});