String.prototype.replaceAll = function(strTarget, strSubString ){
	var strText = this;
	var intIndexOfMatch = strText.indexOf( strTarget );
	// Keep looping while an instance of the target string
	// still exists in the string.
	while (intIndexOfMatch != -1){
		strText = strText.replace( strTarget, strSubString )
		intIndexOfMatch = strText.indexOf( strTarget );
	}
	return( strText );
}

epiton.codecs={};
epiton.codecs.UTF8=function(){
	var _public={
		encode : function (str) {
	        var string = str.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 += String.fromCharCode((c >> 6) | 192);
	                utftext += String.fromCharCode((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
	    decode : function (utftext) {
	        var string = "";
	        var i = 0;
	        var c = 0;
	        var c1 = 0;
	        var 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.replaceAll("+"," ");
	    }
	}
	return _public;
}();

epiton.codecs.Url=function(){
	var _public={
		encode : function (string) {
			return escape(epiton.codecs.UTF8.encode(string));
		},
		decode: function (string){
			return epiton.codecs.UTF8.decode(unescape(string));
		}
	}
	return _public;
}();
epiton.codecs.Base64=function(){
    var _private={
    	// private property
    	_keyStr : "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/="
    };

    var _public={
	    // public method for encoding
	    encode : function (input) {
	        var output = "";
	        var chr1, chr2, chr3, enc1, enc2, enc3, enc4;
	        var i = 0;
	
	        input = epiton.codecs.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 +
	            _private._keyStr.charAt(enc1) + _private._keyStr.charAt(enc2) +
	            _private._keyStr.charAt(enc3) + _private._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 = _private._keyStr.indexOf(input.charAt(i++));
	            enc2 = _private._keyStr.indexOf(input.charAt(i++));
	            enc3 = _private._keyStr.indexOf(input.charAt(i++));
	            enc4 = _private._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 = epiton.codecs.UTF8.decode(output);
	
	        return output;
	
	    }
	 }
	 
	 return _public;
}();

epiton.classloader.setLoaded("codecs");