var Crypto = null;
if(!Crypto){Crypto = {}};
if(!Crypto.html){Crypto.html = {}};
if(!Crypto.base){Crypto.base = {}};
Crypto.html.urlDecode = function(){
	var str = arguments[0];
	str=str.replace(new RegExp('\\+','g'),' ');
	return unescape(str);
}

Crypto.html.urlEncode = function(){
	var str = arguments[0];
	str=escape(str);
	str=str.replace(new RegExp('\\+','g'),'%2B');
	return str.replace(new RegExp('%20','g'),'+');
}

var END_OF_INPUT = -1;
var base64Chars = new Array('A','B','C','D','E','F','G','H','I','J','K','L','M','N','O','P','Q','R','S','T','U','V','W','X','Y','Z','a','b','c','d','e','f','g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v','w','x','y','z','0','1','2','3','4','5','6','7','8','9','+','/');
var reverseBase64Chars = new Array();

for (var i=0; i < base64Chars.length; i++){
	reverseBase64Chars[base64Chars[i]] = i;
}

var base64Str;
var base64Count;
Crypto.base.set64Str = function(){
	var str = arguments[0];
	base64Str = str;
	base64Count = 0;
}

Crypto.base.read64 = function(){
	if (!base64Str) return END_OF_INPUT;
	if (base64Count >= base64Str.length) return END_OF_INPUT;
	var c = base64Str.charCodeAt(base64Count) & 0xff;
	base64Count++;
	return c;
}

Crypto.base.encode64=function(){
	var str = arguments[0];
	Crypto.base.set64Str(str);
	var result = '';
	var inBuffer = new Array(3);
	var lineCount = 0;
	var done = false;
	while (!done && (inBuffer[0] = Crypto.base.read64()) != END_OF_INPUT){
		inBuffer[1] = Crypto.base.read64();
       	inBuffer[2] = Crypto.base.read64();
       	result += (base64Chars[ inBuffer[0] >> 2 ]);
       	if (inBuffer[1] != END_OF_INPUT){
        	result += (base64Chars [(( inBuffer[0] << 4 ) & 0x30) | (inBuffer[1] >> 4) ]);
           	if (inBuffer[2] != END_OF_INPUT){
            	result += (base64Chars [((inBuffer[1] << 2) & 0x3c) | (inBuffer[2] >> 6) ]);
               	result += (base64Chars [inBuffer[2] & 0x3F]);
           	}else{
            	result += (base64Chars [((inBuffer[1] << 2) & 0x3c)]);
               	result += ('=');
               	done = true;
           	}
       	}else {
           	result += (base64Chars [(( inBuffer[0] << 4 ) & 0x30)]);
           	result += ('=');
           	result += ('=');
           	done = true;
       }
       lineCount += 4;
       if(lineCount >= 76){
       		result += ('\n');
           	lineCount = 0;
       }
   }
   return result;
}

Crypto.base.readReverse64 = function(){      
	if (!base64Str) return END_OF_INPUT;
   	while (true){             
		if (base64Count >= base64Str.length) return END_OF_INPUT;
       	var nextCharacter = base64Str.charAt(base64Count);
       	base64Count++;
       	if (reverseBase64Chars[nextCharacter]){ return reverseBase64Chars[nextCharacter]; }
       	if (nextCharacter == 'A') return 0;
   	}
	return END_OF_INPUT;
}

Crypto.ntos = function(){
   var n = arguments[0]
   n=n.toString(16);
   if (n.length == 1) n="0"+n;
   n="%"+n;
   return unescape(n);
}

Crypto.base.decode64 = function(){
   var str = arguments[0];
   Crypto.base.set64Str(str);
   var result = "";
   var inBuffer = new Array(4);
   var done = false;
   while (!done && (inBuffer[0] = Crypto.base.readReverse64()) != END_OF_INPUT && (inBuffer[1] = Crypto.base.readReverse64()) != END_OF_INPUT){
       inBuffer[2] = Crypto.base.readReverse64();
       inBuffer[3] = Crypto.base.readReverse64();
       result += Crypto.ntos((((inBuffer[0] << 2) & 0xff)| inBuffer[1] >> 4));
       if (inBuffer[2] != END_OF_INPUT){
           result +=  Crypto.ntos((((inBuffer[1] << 4) & 0xff)| inBuffer[2] >> 2));
           if (inBuffer[3] != END_OF_INPUT){
               result +=  Crypto.ntos((((inBuffer[2] << 6)  & 0xff) | inBuffer[3]));
           } else {
               done = true;
           }
       } else {
           done = true;
       }
   }
   return result;
}

var digitArray = new Array('0','1','2','3','4','5','6','7','8','9','a','b','c','d','e','f');
Crypto.toHex = function(){
   var n = arguments[0];
   var result = ''
   var start = true;
   for (var i=32; i>0;){
       	i-=4;
       	var digit = (n>>i) & 0xf;
       	if (!start || digit != 0){
        	start = false;
        	result += digitArray[digit];
    	}
   	}
	return (result==''?'0':result);
}

Crypto.pad = function(){
   var str = arguments[0];
   var len = arguments[1];
   var pad = arguments[2];
   var result = str;
   for (var i=str.length; i<len; i++){
       result = pad + result;
   }
   return result;
}

Crypto.encodeHex = function(){
	var str = arguments[0];
   	var result = "";
   	for (var i=0; i<str.length; i++){
    	  result += pad(toHex(str.charCodeAt(i)&0xff),2,'0');
   	}
   	return result;
}

var hexv = { "00":0,"01":1,"02":2,"03":3,"04":4,"05":5,"06":6,"07":7,"08":8,"09":9,"0A":10,"0B":11,"0C":12,"0D":13,"0E":14,"0F":15,
 			 "10":16,"11":17,"12":18,"13":19,"14":20,"15":21,"16":22,"17":23,"18":24,"19":25,"1A":26,"1B":27,"1C":28,"1D":29,"1E":30,"1F":31,
			 "20":32,"21":33,"22":34,"23":35,"24":36,"25":37,"26":38,"27":39,"28":40,"29":41,"2A":42,"2B":43,"2C":44,"2D":45,"2E":46,"2F":47,
			 "30":48,"31":49,"32":50,"33":51,"34":52,"35":53,"36":54,"37":55,"38":56,"39":57,"3A":58,"3B":59,"3C":60,"3D":61,"3E":62,"3F":63,
			 "40":64,"41":65,"42":66,"43":67,"44":68,"45":69,"46":70,"47":71,"48":72,"49":73,"4A":74,"4B":75,"4C":76,"4D":77,"4E":78,"4F":79,
			 "50":80,"51":81,"52":82,"53":83,"54":84,"55":85,"56":86,"57":87,"58":88,"59":89,"5A":90,"5B":91,"5C":92,"5D":93,"5E":94,"5F":95,
			 "60":96,"61":97,"62":98,"63":99,"64":100,"65":101,"66":102,"67":103,"68":104,"69":105,"6A":106,"6B":107,"6C":108,"6D":109,"6E":110,"6F":111,
			 "70":112,"71":113,"72":114,"73":115,"74":116,"75":117,"76":118,"77":119,"78":120,"79":121,"7A":122,"7B":123,"7C":124,"7D":125,"7E":126,"7F":127,
			 "80":128,"81":129,"82":130,"83":131,"84":132,"85":133,"86":134,"87":135,"88":136,"89":137,"8A":138,"8B":139,"8C":140,"8D":141,"8E":142,"8F":143,
			 "90":144,"91":145,"92":146,"93":147,"94":148,"95":149,"96":150,"97":151,"98":152,"99":153,"9A":154,"9B":155,"9C":156,"9D":157,"9E":158,"9F":159,
			 "A0":160,"A1":161,"A2":162,"A3":163,"A4":164,"A5":165,"A6":166,"A7":167,"A8":168,"A9":169,"AA":170,"AB":171,"AC":172,"AD":173,"AE":174,"AF":175,
			 "B0":176,"B1":177,"B2":178,"B3":179,"B4":180,"B5":181,"B6":182,"B7":183,"B8":184,"B9":185,"BA":186,"BB":187,"BC":188,"BD":189,"BE":190,"BF":191,
			 "C0":192,"C1":193,"C2":194,"C3":195,"C4":196,"C5":197,"C6":198,"C7":199,"C8":200,"C9":201,"CA":202,"CB":203,"CC":204,"CD":205,"CE":206,"CF":207,
			 "D0":208,"D1":209,"D2":210,"D3":211,"D4":212,"D5":213,"D6":214,"D7":215,"D8":216,"D9":217,"DA":218,"DB":219,"DC":220,"DD":221,"DE":222,"DF":223,
			 "E0":224,"E1":225,"E2":226,"E3":227,"E4":228,"E5":229,"E6":230,"E7":231,"E8":232,"E9":233,"EA":234,"EB":235,"EC":236,"ED":237,"EE":238,"EF":239,
			 "F0":240,"F1":241,"F2":242,"F3":243,"F4":244,"F5":245,"F6":246,"F7":247,"F8":248,"F9":249,"FA":250,"FB":251,"FC":252,"FD":253,"FE":254,"FF":255 };

Crypto.decodeHex = function(){
	var str = arguments[0];
   		str = str.toUpperCase().replace(new RegExp("s/[^0-9A-Z]//g"));
   	var result = "";
   	var nextchar = "";
   	for (var i=0; i<str.length; i++){
       nextchar += str.charAt(i);
       if (nextchar.length == 2){
           result += Crypto.ntos(hexv[nextchar]);
           nextchar = "";
       }
   }
   return result;
}