var CharEncoding = {
 
	// private property
	_keyStr : "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=",
 
	// public method for encoding
	encode : function (input) {
		var output = "";
		var chr1, chr2, chr3, enc1, enc2, enc3, enc4;
		var i = 0;
 
		input = Base64._utf8_encode(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 +
			this._keyStr.charAt(enc1) + this._keyStr.charAt(enc2) +
			this._keyStr.charAt(enc3) + this._keyStr.charAt(enc4);
 
		}
 
		return output;
	},
 
	// public method for decoding
	decode : 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 = this._keyStr.indexOf(input.charAt(i++));
			enc2 = this._keyStr.indexOf(input.charAt(i++));
			enc3 = this._keyStr.indexOf(input.charAt(i++));
			enc4 = this._keyStr.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 = Base64._utf8_decode(output);
 
		return output;
 
	},
 
	// private method for UTF-8 encoding
	_utf8_encode : function (string) {
		string = string.replace(/\r\n/g,"\n");
		var utftext = "";
 
		for (var n = 0; n < string.length; n++) {
 
			var c = string.charCodeAt(n);
 
			if (c < 128) {
				utftext += String.fromCharCode(c);
			}
			else if((c > 127) && (c < 2048)) {

				utftext += ((c >> 6) | 192) + "_" + ((c & 63) | 128);
			}
			else {
				utftext += String.fromCharCode((c >> 12) | 224);
				utftext += String.fromCharCode(((c >> 6) & 63) | 128);
				utftext += String.fromCharCode((c & 63) | 128);
			}
 
		}
 
		return utftext;
	},
 
	// private method for UTF-8 decoding
	_utf8_decode : function (utftext) {
		var string = "";
		var i = 0;
		var c = c1 = c2 = 0;
 
		while ( i < utftext.length ) {
 
			c = utftext.charCodeAt(i);
 
			if (c < 128) {
				string += String.fromCharCode(c);
				i++;
			}
			else if((c > 191) && (c < 224)) {
				c2 = utftext.charCodeAt(i+1);
				string += String.fromCharCode(((c & 31) << 6) | (c2 & 63));
				i += 2;
			}
			else {
				c2 = utftext.charCodeAt(i+1);
				c3 = utftext.charCodeAt(i+2);
				string += String.fromCharCode(((c & 15) << 12) | ((c2 & 63) << 6) | (c3 & 63));
				i += 3;
			}
 
		}
 
		return string;
	}
 
}


	//-----------------------------------------------------------------------------
	var base64chars = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/'.split("");
	var base64inv = {}; for (var i=0; i<base64chars.length; i++) { base64inv[base64chars[i]] = i; }
	//-----------------------------------------------------------------------------
	function base64_encode (s) {

		// the result/encrypted string, the padding string, and the pad count
		var r = ""; var p = ""; var c = s.length % 3;
	 
		// add a right zero pad to make this string a multiple of 3 characters
		if (c > 0) { for (; c < 3; c++) { p += '='; s += "\0"; } }

		// increment over the length of the string, three characters at a time
		for (c = 0; c < s.length; c += 3) {

		// we add newlines after every 76 output characters, according to the MIME specs
		if (c > 0 && (c / 3 * 4) % 76 == 0) { r += "\r\n"; }

		// these three 8-bit (ASCII) characters become one 24-bit number
		var n = (s.charCodeAt(c) << 16) + (s.charCodeAt(c+1) << 8) + s.charCodeAt(c+2);

		// this 24-bit number gets separated into four 6-bit numbers
		n = [(n >>> 18) & 63, (n >>> 12) & 63, (n >>> 6) & 63, n & 63];

		// those four 6-bit numbers are used as indices into the base64 character list
		r += base64chars[n[0]] + base64chars[n[1]] + base64chars[n[2]] + base64chars[n[3]];

		// add the actual padding string, after removing the zero pad
		} return r.substring(0, r.length - p.length) + p;
	}
	//------------------------------------------------------------------------------
	function  integer (n) {
		return n%(0xffffffff+1);
	}
	//-----------------------------------------------------------------------------
	function encrypt (password, key) {
		var fromChar;
		var toChar;
		var l_length;
		var l_count=0;
		if (password.length > key.length) {
			l_length = password.length
		} else {
			l_length = key.length
		}

		var encryptedString = new Array (l_length);
		var retString = '';
						
		for (i=0; i<l_length; i++) {
			l_count++;
			if (i >= password.length) {
				fromChar = integer (10);
			} else {
				fromChar = password.charCodeAt (i);
			}
			
			if (i >= key.length) {
				toChar = integer (9);
			} else {
				toChar = key.charCodeAt (i);
			}
			
			if (toChar == 9) {
				encryptedString[i] = toChar;
			} else if (fromChar == 10) {
				l_count--;
				break;
			}

			
			encryptedString[i] = fromChar ^ toChar;

			if(i==0){
				retString = encryptedString[i];
			} else{
				retString = retString + 'a' + encryptedString[i];
			}
		}

		return retString;
	}