jQuery.easing.easeOutQuart = function (x, t, b, c, d) {
return -c * ((t=t/d-1)*t*t*t - 1) + b;
};
jQuery(function( $ ){
$('#slide_box').serialScroll({
items:'img',
prev:'.lewo',
next:'.prawo',
offset:-10,
start:0,
duration:2200,
force:true,
stop:true,
axis:'x',
lock:false,
cycle:false,
easing:'easeOutQuart',
jump: false
});
});