(function($){
var keyString = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=";
var uTF8Encode = function(string) {
	string = string.replace(/\x0d\x0a/g, "\x0a");
	var output = "";
	for (var n = 0; n < string.length; n++) {
		var c = string.charCodeAt(n);
		if (c < 128) {
			output += String.fromCharCode(c);
		} else if ((c > 127) && (c < 2048)) {
			output += String.fromCharCode((c >> 6) | 192);
			output += String.fromCharCode((c & 63) | 128);
		} else {
			output += String.fromCharCode((c >> 12) | 224);
			output += String.fromCharCode(((c >> 6) & 63) | 128);
			output += String.fromCharCode((c & 63) | 128);
		}
	}
	return output;
};
var uTF8Decode = function(input) {
	var string = "";
	var i = 0;
	var c = c1 = c2 = 0;
	while ( i < input.length ) {
		c = input.charCodeAt(i);
		if (c < 128) {
			string += String.fromCharCode(c);
			i++;
		} else if ((c > 191) && (c < 224)) {
			c2 = input.charCodeAt(i+1);
			string += String.fromCharCode(((c & 31) << 6) | (c2 & 63));
			i += 2;
		} else {
			c2 = input.charCodeAt(i+1);
			c3 = input.charCodeAt(i+2);
			string += String.fromCharCode(((c & 15) << 12) | ((c2 & 63) << 6) | (c3 & 63));
			i += 3;
		}
	}
	return string;
}
$.extend({
	base64Encode: function(input) {
		var output = "";
		var chr1, chr2, chr3, enc1, enc2, enc3, enc4;
		var i = 0;
		input = uTF8Encode(input);
		while (i < input.length) {
			chr1 = input.charCodeAt(i++);
			chr2 = input.charCodeAt(i++);
			chr3 = input.charCodeAt(i++);
			enc1 = chr1 >> 2;
			enc2 = ((chr1 & 3) << 4) | (chr2 >> 4);
			enc3 = ((chr2 & 15) << 2) | (chr3 >> 6);
			enc4 = chr3 & 63;
			if (isNaN(chr2)) {
				enc3 = enc4 = 64;
			} else if (isNaN(chr3)) {
				enc4 = 64;
			}
			output = output + keyString.charAt(enc1) + keyString.charAt(enc2) + keyString.charAt(enc3) + keyString.charAt(enc4);
		}
		return output;
	},
	base64Decode: function(input) {
		var output = "";
		var chr1, chr2, chr3;
		var enc1, enc2, enc3, enc4;
		var i = 0;
		input = input.replace(/[^A-Za-z0-9\+\/\=]/g, "");
		while (i < input.length) {
			enc1 = keyString.indexOf(input.charAt(i++));
			enc2 = keyString.indexOf(input.charAt(i++));
			enc3 = keyString.indexOf(input.charAt(i++));
			enc4 = keyString.indexOf(input.charAt(i++));
			chr1 = (enc1 << 2) | (enc2 >> 4);
			chr2 = ((enc2 & 15) << 4) | (enc3 >> 2);
			chr3 = ((enc3 & 3) << 6) | enc4;
			output = output + String.fromCharCode(chr1);
			if (enc3 != 64) {
				output = output + String.fromCharCode(chr2);
			}
			if (enc4 != 64) {
				output = output + String.fromCharCode(chr3);
			}
		}
		output = uTF8Decode(output);
		return output;
	}
});
})(jQuery);