Halloween Contest - Caeser Cipher

[GAMEchief]

Shift characters by 2014.

var HalloCrypt = function(str) {
	var chars = "HALOWENBCDFGIJKMPQRSTUVXYZ0123456789halowenbcdfgijkmpqrstuvxyz",
		encryption = "",
		loc, x;
	for (x = 0; x < str.length; x++) {
		loc = chars.indexOf(str[x]);

		// If the character is in our string of characters, edit it.
		if (loc != -1) {
			loc += 2014;
			loc = loc % chars.length;
			encryption += chars[loc];
		}

		// Not an alphanumeric character, keep it the same.
		else
			encryption += str[x];
	}
	return encryption;
};

var DeHalloCrypt = function(str) {
	var chars = "HALOWENBCDFGIJKMPQRSTUVXYZ0123456789halowenbcdfgijkmpqrstuvxyz",
		encryption = "",
		loc, x;
	for (x = 0; x < str.length; x++) {
		loc = chars.indexOf(str[x]);

		// If the character is in our string of characters, edit it.
		if (loc != -1) {
			loc -= 2014;
			while (loc < 0)
				loc += chars.length;
			encryption += chars[loc];
		}

		// Not an alphanumeric character, keep it the same.
		else
			encryption += str[x];
	}
	return encryption;
};

var a = HalloCrypt("This is a test of the emergency Logical Gamers system.");
alert(a + "\n" + DeHalloCrypt(a));