$.easing.elasout = function(x, t, b, c, d) {
			var s=1.70158;var p=0;var a=c;
			if (t==0) return b;  if ((t/=d)==1) return b+c;  if (!p) p=d*.3;
			if (a < Math.abs(c)) { a=c; var s=p/10; }
			else var s = p/(2*Math.PI) * Math.asin (c/a);
			return a*Math.pow(2,-10*t) * Math.sin( (t*d-s)*(2*Math.PI)/p ) + c + b;
};


$(document).ready(function() {


	$(".categoriacentro2").serialScroll({
				items:'div',
				prev:'#arribaProg',
				next:'#abajoProg',
				duration:700,
				axis:'y',
				cycle: false,
				start:0,
				force:true,
				lazy:true,//NOTE: it's set to true, meaning you can/remove/reorder the items and the changes are taken into account.
				step:5, //scroll 2 news each time
				event:'mousedown'
			});

});