var dateFormat = function() {
	var token = /d{1,4}|m{1,4}|yy(?:yy)?|([HhMsTt])\1?|[LloSZ]|"[^"]*"|'[^']*'/g, timezone = /\b(?:[PMCEA][SDP]T|(?:Pacific|Mountain|Central|Eastern|Atlantic) (?:Standard|Daylight|Prevailing) Time|(?:GMT|UTC)(?:[-+]\d{4})?)\b/g, timezoneClip = /[^-+\dA-Z]/g, pad = function(
			val, len) {
		val = String(val);
		len = len || 2;
		while (val.length < len)
			val = "0" + val;
		return val;
	};
	// Regexes and supporting functions are cached through closure
	return function(date, mask, utc) {
		var dF = dateFormat;
		// You can't provide utc if you skip other args (use the "UTC:" mask
		// prefix)
		if (arguments.length == 1
				&& Object.prototype.toString.call(date) == "[object String]"
				&& !/\d/.test(date)) {
			mask = date;
			date = undefined;
		}

		// Passing date through Date applies Date.parse, if necessary
		date = date ? new Date(date) : new Date;
		if (isNaN(date))
			throw SyntaxError("invalid date");

		mask = String(dF.masks[mask] || mask || dF.masks["default"]);

		// Allow setting the utc argument via the mask
		if (mask.slice(0, 4) == "UTC:") {
			mask = mask.slice(4);
			utc = true;
		}
		var _ = utc ? "getUTC" : "get", d = date[_ + "Date"](), D = date[_
				+ "Day"](), m = date[_ + "Month"](), y = date[_ + "FullYear"](), H = date[_
				+ "Hours"](), M = date[_ + "Minutes"](), s = date[_ + "Seconds"]
				(), L = date[_ + "Milliseconds"](), o = utc ? 0 : date
				.getTimezoneOffset(), flags = {
			d : d,
			dd : pad(d),
			ddd : dF.i18n.dayNames[D],
			dddd : dF.i18n.dayNames[D + 7],
			m : m + 1,
			mm : pad(m + 1),
			mmm : dF.i18n.monthNames[m],
			mmmm : dF.i18n.monthNames[m + 12],
			yy : String(y).slice(2),
			yyyy : y,
			h : H % 12 || 12,
			hh : pad(H % 12 || 12),
			H : H,
			HH : pad(H),
			M : M,
			MM : pad(M),
			s : s,
			ss : pad(s),
			l : pad(L, 3),
			L : pad(L > 99 ? Math.round(L / 10) : L),
			t : H < 12 ? "a" : "p",
			tt : H < 12 ? "am" : "pm",
			T : H < 12 ? "A" : "P",
			TT : H < 12 ? "AM" : "PM",
			Z : utc ? "UTC" : (String(date).match(timezone) || [ "" ]).pop()
					.replace(timezoneClip, ""),
			o : (o > 0 ? "-" : "+")
					+ pad(
							Math.floor(Math.abs(o) / 60) * 100 + Math.abs(o)
									% 60, 4),
			S : [ "th", "st", "nd", "rd" ][d % 10 > 3 ? 0
					: (d % 100 - d % 10 != 10) * d % 10]
		};

		return mask.replace(token, function($0) {
			return $0 in flags ? flags[$0] : $0.slice(1, $0.length - 1);
		});
	};
}();

// Some common format strings
dateFormat.masks = {
	"default" : "ddd mmm dd yyyy HH:MM:ss",
	shortDate : "m/d/yy",
	mediumDate : "mmm d, yyyy",
	longDate : "mmmm d, yyyy",
	fullDate : "dddd, mmmm d, yyyy",
	shortTime : "h:MM TT",
	mediumTime : "h:MM:ss TT",
	longTime : "h:MM:ss TT Z",
	ISO8601 : "yyyy-mm-dd'T'HH:MM:ss o",
	RFC2822 : "ddd, dd mmm yyyy HH:MM:ss",
	isoDate : "yyyy-mm-dd",
	isoTime : "HH:MM:ss",
	isoDateTime : "yyyy-mm-dd'T'HH:MM:ss",
	isoUtcDateTime : "UTC:yyyy-mm-dd'T'HH:MM:ss'Z'"
};

// For convenience...
Date.prototype.format = function(mask, utc) {
	return dateFormat(this, mask, utc);
};

function pad(n) {
	return n < 10 ? '0' + n : n;
}

function ISODateString(d) {
	return d.getUTCFullYear() + '-' + pad(d.getUTCMonth() + 1) + '-'
			+ pad(d.getUTCDate()) + 'T' + pad(d.getUTCHours()) + ':'
			+ pad(d.getUTCMinutes()) + ':' + '00' + '' + '+00:00';
	// 2011-04-01T16:00:25Z
	// 2011-04-07T18:00:00+02:00
	//
}

Date.prototype.setISO8601 = function(string) {
	var regexp = /(\d{4})-(\d{2})-(\d{2})[T\s]?(\d{2})\:(\d{2})\:(\d{2})(\.\d{3})?\s?([-+])(\d{2})\:?(\d{2})/;
	if (string.toString().match(new RegExp(regexp))) {
		var d = string.match(new RegExp(regexp));
		var offset = 0;
		// alert(d[1]+','+d[2]+','+d[3]+','+d[4]+','+d[5]+','+d[6]);
		// alert(d[7]+','+d[8]+','+d[9]);
		var date = new Date(d[1], d[2] - 1, d[3], d[4], d[5], d[6]);
		offset = (Number(d[9]) * 60) + Number(d[10]);
		offset *= ((d[8] == '-') ? 1 : -1);
		offset -= date.getTimezoneOffset();
		time = (Number(date) + (offset * 60 * 1000));
		this.setTime(Number(time));
	} else {
		var regexp = /(\d{4})-(\d{2})-(\d{2})/;
		if (string.toString().match(new RegExp(regexp))) {
			var d = string.match(new RegExp(regexp));
			var offset = 0;
			var date = new Date(d[1], d[2] - 1, d[3]);
			time = (Number(date));
			this.setTime(Number(time));
		}else{
			throw SyntaxError("invalid date (setISO8601)");
		}
	}
};