$(document).ready(function() {

$('#scroll').serialScroll({
	items:'li',
	prev:'#but #arl',
	next:'#but #arr',
	step:4,
	offset:0,
	duration:600,
	force:true,
	stop:true,
	lock:true,
	cycle:false,
	jump:false,
 	exclude:3,
	constant:false,
	easing:'easeOutQuart'
});

});