var Url = {   
  
    // public method for url encoding   
    Encode : function (string) {   
        return escape(this._utf8_encode(string));   
    },   
  
    // public method for url decoding   
    Decode : function (string) {   
        return this._utf8_decode(unescape(string));   
    },   
  
    // 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 += 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   
    _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;   
    }   
  
}