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;
																																																																					        }
																																																																						
																																																																						}