var Url = {
	encode : function (string) {
		return escape(this._utf8_encode(string));
	},
	decode : function (string) {
		return this._utf8_decode(unescape(string));
	},
	_utf8_encode : function (string) {
		string = string.replace(/\r\n/g,"\n");
		var utftext = "";
 
		for (var n = 0; n < string.length; n++) {
      if (string[n] == "+") {
        utftext += "&#43";
      } else {
  			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;
	},
	_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;
	}
}