[JS - scroll to anchor] http://stackoverflow.com/questions/7717527/jquery-smooth-scrolling-when-clicking-an-anchor-link

JS - scroll to anchor.js

var $root = $('html, body');
$('a').click(function() {
    var href = $.attr(this, 'href');
    $root.animate({
        scrollTop: $(href).offset().top
    }, 500, function () {
        window.location.hash = href;
    });
    return false;
});