window.timeUnits = {
	'millisecond': 1,
	'second': 1000,
	'minute': 60000,
	'hour': 3600000,
	'day': 24 * 3600000,
	'week': 7 * 24 * 3600000,
	'month': 28 * 24 * 3600000,
	'year': 364 * 24 * 3600000
};