Date.prototype.format = function(format) {
	var returnStr = '';
	var replace = Date.replaceChars;
	for ( var i = 0; i < format.length; i++) {
		var curChar = format.charAt(i);
		if (replace[curChar]) {
			returnStr += replace[curChar].call(this);
		} else {
			returnStr += curChar;
		}
	}
	return returnStr;
};
Date.replaceChars = {
	shortMonths : [ 'Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug',
			'Sep', 'Oct', 'Nov', 'Dec' ],
	longMonths : [ 'January', 'February', 'March', 'April', 'May', 'June',
			'July', 'August', 'September', 'October', 'November', 'December' ],
	shortDays : [ 'Sun', 'Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat' ],
	longDays : [ 'Sunday', 'Monday', 'Tuesday', 'Wednesday', 'Thursday',
			'Friday', 'Saturday' ],

	// Day
	d : function() {
		return (this.getDate() < 10 ? '0' : '') + this.getDate();
	},
	D : function() {
		return Date.replaceChars.shortDays[this.getDay()];
	},
	j : function() {
		return this.getDate();
	},
	l : function() {
		return Date.replaceChars.longDays[this.getDay()];
	},
	N : function() {
		return this.getDay() + 1;
	},
	S : function() {
		return (this.getDate() % 10 == 1 && this.getDate() != 11 ? 'st' : (this
				.getDate() % 10 == 2
				&& this.getDate() != 12 ? 'nd' : (this.getDate() % 10 == 3
				&& this.getDate() != 13 ? 'rd' : 'th')));
	},
	w : function() {
		return this.getDay();
	},
	z : function() {
		return "Not Yet Supported";
	},
	// Week
	W : function() {
		return "Not Yet Supported";
	},
	// Month
	F : function() {
		return Date.replaceChars.longMonths[this.getMonth()];
	},
	m : function() {
		return (this.getMonth() < 9 ? '0' : '') + (this.getMonth() + 1);
	},
	M : function() {
		return Date.replaceChars.shortMonths[this.getMonth()];
	},
	n : function() {
		return this.getMonth() + 1;
	},
	t : function() {
		return "Not Yet Supported";
	},
	// Year
	L : function() {
		return (((this.getFullYear() % 4 == 0) && (this.getFullYear() % 100 != 0)) || (this
				.getFullYear() % 400 == 0)) ? '1' : '0';
	},
	o : function() {
		return "Not Supported";
	},
	Y : function() {
		return this.getFullYear();
	},
	y : function() {
		return ('' + this.getFullYear()).substr(2);
	},
	// Time
	a : function() {
		return this.getHours() < 12 ? 'am' : 'pm';
	},
	A : function() {
		return this.getHours() < 12 ? 'AM' : 'PM';
	},
	B : function() {
		return "Not Yet Supported";
	},
	g : function() {
		return this.getHours() % 12 || 12;
	},
	G : function() {
		return this.getHours();
	},
	h : function() {
		return ((this.getHours() % 12 || 12) < 10 ? '0' : '')
				+ (this.getHours() % 12 || 12);
	},
	H : function() {
		return (this.getHours() < 10 ? '0' : '') + this.getHours();
	},
	i : function() {
		return (this.getMinutes() < 10 ? '0' : '') + this.getMinutes();
	},
	s : function() {
		return (this.getSeconds() < 10 ? '0' : '') + this.getSeconds();
	},
	// Timezone
	e : function() {
		return "Not Yet Supported";
	},
	I : function() {
		return "Not Supported";
	},
	O : function() {
		return (-this.getTimezoneOffset() < 0 ? '-' : '+')
				+ (Math.abs(this.getTimezoneOffset() / 60) < 10 ? '0' : '')
				+ (Math.abs(this.getTimezoneOffset() / 60)) + '00';
	},
	P : function() {
		return (-this.getTimezoneOffset() < 0 ? '-' : '+')
				+ (Math.abs(this.getTimezoneOffset() / 60) < 10 ? '0' : '')
				+ (Math.abs(this.getTimezoneOffset() / 60)) + ':'
				+ (Math.abs(this.getTimezoneOffset() % 60) < 10 ? '0' : '')
				+ (Math.abs(this.getTimezoneOffset() % 60));
	},
	T : function() {
		var m = this.getMonth();
		this.setMonth(0);
		var result = this.toTimeString().replace(/^.+ \(?([^\)]+)\)?$/, '$1');
		this.setMonth(m);
		return result;
	},
	Z : function() {
		return -this.getTimezoneOffset() * 60;
	},
	// Full Date/Time
	c : function() {
		return this.format("Y-m-d") + "T" + this.format("H:i:sP");
	},
	r : function() {
		return this.toString();
	},
	U : function() {
		return this.getTime() / 1000;
	}
}