Translate GMT date to browser's timezone, with locale format

gmtToLocaleDate.js

/**
 * Get a date as 'YYYY-MM-DD HH:MM:SS' as GMT, and returns the same date according to the browser's timezone, i.e. GMT+n.
 * The returned date is a string, with the locale format.
 * @param string dateString The date as 'YYYY-MM-DD HH:MM:SS'
 * @param bool withHour If false (default), the 'hour' part is excluded from the returned string
 * @return string The date/time according to the browser's locale timezone and format.
 * @example gmtToLocaleDate('2014-10-31 21:52:17', true) returns '31/10/2014 21:52:17' (according to my French browser locale, as october is GMT+1)
 * @example gmtToLocaleDate('2014-05-31 21:52:17', true) returns '31/05/2014 23:52:17' (as May is GMT+2)
 */
var gmtToLocaleDate = function(dateString, withHour) {
	if (!dateString) return '';
	var d = new Date(dateString.split(' ').join('T'));
	d.setMinutes(d.getMinutes() - d.getTimezoneOffset())
	return (withHour ? d.toLocaleString() : d.toLocaleDateString());
};