jQuery.easing.quart = function (x, t, b, c, d) {
    return -c * ((t=t/d-1)*t*t*t - 1) + b;
};

jQuery(document).ready(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
                }, 'slow');
                return false;
            }
        }
    });

});