HD.util.Date = {
	format : function(date, format) {
		/*
		 *  ORIGINAL SOURCE FROM
		 *  http://blog.stevenlevithan.com/archives/date-time-format
		 *
		 * Date Format 1.2.2
		 * (c) 2007-2008 Steven Levithan <stevenlevithan.com>
		 * MIT license
		 * Includes enhancements by Scott Trenda <scott.trenda.net> and Kris Kowal <cixar.com/~kris.kowal/>
		 *
		 * Accepts a date, a mask, or a date and a mask.
		 * Returns a formatted version of the given date.
		 * The date defaults to the current date/time.
		 * The mask defaults to dateFormat.masks.default.
		 */
		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 && (typeof date == "string" || date instanceof 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 new 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",
			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'"
		};
		
		// Internationalization strings
		dateFormat.i18n = {
			dayNames: [
				"Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat",
				"Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday"
			],
			monthNames: [
				"Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec",
				"January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December"
			]
		};
		
		return dateFormat(date, format);
	}
};