c3/docs/_script_scroll.haml

:javascript
  $(function(){
    function scrollToHash() {
      var hash = document.location.hash,
          target = $('.column-content h3 a[href^=' + hash + ']'),
          position;
      if (target.length) {
        position = target.offset().top - 60;
        $("html, body").animate({scrollTop:position}, 250, "swing");
      }
    }
    $(window).on('hashchange', scrollToHash);

    // When clicked
    $('a[href^=#]').click(function(){
      document.location.hash = $(this).attr("href");
      return false;
    });

    // When loaded
    $(window).trigger('hashchange');
  });