node-ldapjs/docs/branding/footer.html.in

<script type="text/javascript" charset="utf-8">
$(function() {
    var headerHeight = $("#header").height();
    var offsets = [];
    var current = -1;

    function endpoint(scrollDistance) {
        if (scrollDistance < offsets[0]) {
            return -1;
        } else {
            for (var id = offsets.length; id > 0; id--) {
                if (scrollDistance > offsets[id - 1]) {
                    return id - 1;
                    break;
                }
            }
        }
    }

    $("h2").each(function(i) {
        offsets.push($(this).offset().top - headerHeight)
    });

    $("#content").append('<h2 class="fixed" style="display: none"><span>&nbsp;</span></h2>');
    var fixed_h2 = $("h2.fixed");
    var fixed_span = $("h2.fixed span");

    $("#content").scroll(function() {
        var scrollDistance = $("#content").attr('scrollTop');
        var now = endpoint(scrollDistance);

        if (now !== current) {
            $("#sidebar li").removeClass("current");
            current = now;
            if (current < 0) {
                fixed_h2.hide();
            } else if (current >= 0) {
                var heading = $($("h2 span")[current]).text();
                $("#sidebar a[href|=#" + heading.replace(' ', '-') + "]").parent().addClass("current");
                fixed_span.text(heading);
                fixed_h2.show();
            }
        }
    });
});
</script>

</body>
</html>