function scrollPage() {
    $("html:not(:animated),body:not(:animated)").animate({ scrollTop: '0px'}, 1000, "linear",
        function() {
            $(this).animate({ scrollTop: '+=20px'}, 250, "linear",
                function() {
                    $(this).animate({ scrollTop: '-=20px'}, 250 );
                } );
        } );    
    return false;
}