Nice relative time (ago) (multilanguage)

timeago.js

/*

Returns a MySQL date as: '2 days ago', 'right now', '14 hours ago'... 
If date is older than 7 days then it displays it as 'September 1'

// Example
console.log( nice_time('2014-09-01 13:12:01') );

// Spanish config
var options = {
	periods: ['segundo', 'minuto', 'hora', 'dia'],
	lengths: [60, 60, 24, 7 ],
	ago: 'hace',
	now: 'justo ahora',
    months: ['Enero', 'Febrero', 'Marzo', 'Abril', 'Mayo', 'Junio', 'Julio', 'Agosto', 'Setiembre', 'Octubre', 'Noviembre', 'Diciembre'],
	format: function(diff, j) {
		if (diff != 1) {
			this.periods[j]+= "s";
		}
		return this.ago+' '+diff+' '+this.periods[j]
	}
};

// Spanish Example
console.log( nice_time('2014-09-01 13:12:01', options) );

*/

function nice_time(mysqldatetime, options) {
	var config = options || {
			periods: ['second', 'minute', 'hour', 'day'],
            months: ['January', 'February', 'March', 'April', 'May', 'June', 'July', 'August', 'September', 'October', 'November', 'December'],
			lengths: [60, 60, 24, 7],
			ago: 'ago',
			now: 'right now',
			format: function(diff) {
			  return this.ago+' '+diff+' '+this.periods[j]+((diff != 1)?'s':'');
			}
		},
		now = new Date().getTime(),
		timestamp = new Date(mysqldatetime.replace(' ', 'T')).getTime(),
		diff = (now - timestamp) / 1000,
		j = 0,
		lengthslength = config.lengths.length;

	if (diff < 2) {
		return config.now;
	}else if (diff > 604800) {
        timestamp = new Date(timestamp);
		return config.months[timestamp.getMonth()]+' '+timestamp.getDate();
	}

	for( ; diff >= config.lengths[j] && j < lengthslength-1; j++) {
		diff /= config.lengths[j];
	}

	return config.format(Math.round(diff), j);
}