function encode_base64(what) {
	  var base64_encodetable = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
	  var result = "";
	  var len = what.length;
	  var x, y;
	  var ptr = 0;

	  while( len-- > 0 ) {
			x = what.charCodeAt( ptr++ );
			result += base64_encodetable.charAt( ( x >> 2 ) & 63 );

			if( len-- <= 0 ) {
				  result += base64_encodetable.charAt( ( x << 4 ) & 63 );
				  result += "==";
				  break;
			}

			y = what.charCodeAt( ptr++ );
			result += base64_encodetable.charAt( ( ( x << 4 ) | ( ( y >> 4 ) & 15 ) ) & 63 );

			if ( len-- <= 0 ) {
				  result += base64_encodetable.charAt( ( y << 2 ) & 63 );
				  result += "=";
				  break;
			}

			x = what.charCodeAt( ptr++ );
			result += base64_encodetable.charAt( ( ( y << 2 ) | ( ( x >> 6 ) & 3 ) ) & 63 );
			result += base64_encodetable.charAt( x & 63 );

	  }

	  return result;
}

function decode_base64(what) {
	var base64_decodetable = new Array (255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
	                                     255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
	                                     255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,  62, 255, 255, 255,  63,
	                                     52 ,  53,  54,  55,  56,  57,  58,  59,  60,  61, 255, 255, 255, 255, 255, 255,
	                                     255,   0,   1,   2,   3,   4,   5,   6,   7,   8,   9,  10,  11,  12,  13,  14,
	                                     15 ,  16,  17,  18,  19,  20,  21,  22,  23,  24,  25, 255, 255, 255, 255, 255,
	                                     255,  26,  27,  28,  29,  30,  31,  32,  33,  34,  35,  36,  37,  38,  39,  40,
	                                     41 ,  42,  43,  44,  45,  46,  47,  48,  49,  50,  51, 255, 255, 255, 255, 255
	                                    );
	var result = "";
	var len = what.length;
	var x, y;
	var ptr = 0;
	
	while (!isNaN(x = what.charCodeAt(ptr++))) {
		if (x == 13 || x == 10)
			continue;
	
		if ((x > 127) || ((x = base64_decodetable[x]) == 255))
			return false;
		if((isNaN(y = what.charCodeAt(ptr++))) || ((y = base64_decodetable[y]) == 255))
			return false;
	
		result += String.fromCharCode((x << 2) | (y >> 4));
	
		if ((x = what.charCodeAt(ptr++)) == 61) {
			if((what.charCodeAt(ptr++) != 61) || (!isNaN(what.charCodeAt( ptr ))))
				return false;
		} else 	{
			if ((x > 127) || ((x = base64_decodetable[x]) == 255))
				return false;
			result += String.fromCharCode((y << 4) | (x >> 2));
			if ((y = what.charCodeAt(ptr++)) == 61) {
				if(!isNaN(what.charCodeAt(ptr)))
					return false;
			} else 	{
				if ((y > 127) || ((y = base64_decodetable[y]) == 255))
					return false;
				result += String.fromCharCode((x << 6) | y);
			}
		}
	}
	return result;
}

function toASCII(str) {
	var leng = str.length;
	var asciicode = new Array(leng);
	var intCyper  = "";
	
	for (var i=0; i<leng; i++) { 
		asciicode[i] = str.charCodeAt(i) - 32;
						
		if (asciicode[i]<10) {
			asciicode[i] = "0" + asciicode[i];
		}					
		intCyper += asciicode[i] + " ";
	}

	return intCyper;
}