/**
 *
 *  UTF-8 data encode / decode
 *  http://www.webtoolkit.info/
 *
 **/
var Utf8 = { 

  // public method for url encoding
  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;
  },
  
  // public method for url decoding
  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;
  }  
}