Smooth Anchor Scroll. http://www.elmastudio.de/webdesign/smooth-scroll-elegantes-scrollen-mit-jquery/

smoothscroll

jQuery(function(){
    jQuery("a[href*=\\#]").click(function() {
    if (location.pathname.replace(/^\//,'') == this.pathname.replace(/^\//,'')
        && location.hostname == this.hostname) {
            var $target = jQuery(this.hash);
            $target = $target.length && $target || jQuery('[name=' + this.hash.slice(1) +']');
            if ($target.length) {
                var targetOffset = $target.offset().top;
                jQuery('html,body').animate({scrollTop: targetOffset}, 1000);
                return false;
            }
        }
    });
});