1. <script language="javascript" type="text/javascript">
  2.     /* URL encode / decode */
  3.     var Url =
  4.     {
  5.         // public method for url encoding
  6.         encode: function(string) {
  7.             return escape(this._utf8_encode(string));
  8.         },
  9.  
  10.         // public method for url decoding
  11.         decode: function(string) {
  12.             return this._utf8_decode(unescape(string));
  13.         },
  14.  
  15.         // private method for UTF-8 encoding
  16.         _utf8_encode: function(string) {
  17.             string = string.replace(/\r\n/g, "\n");
  18.             var utftext = "";
  19.  
  20.             for (var n = 0; n < string.length; n++) {
  21.  
  22.                 var c = string.charCodeAt(n);
  23.  
  24.                 if (c < 128) {
  25.                     utftext += String.fromCharCode(c);
  26.                 }
  27.                 else if ((c > 127) && (c < 2048)) {
  28.                     utftext += String.fromCharCode((c >> 6) | 192);
  29.                     utftext += String.fromCharCode((c & 63) | 128);
  30.                 }
  31.                 else {
  32.                     utftext += String.fromCharCode((c >> 12) | 224);
  33.                     utftext += String.fromCharCode(((c >> 6) & 63) | 128);
  34.                     utftext += String.fromCharCode((c & 63) | 128);
  35.                 }
  36.  
  37.             }
  38.  
  39.             return utftext;
  40.         },
  41.  
  42.         // private method for UTF-8 decoding
  43.         _utf8_decode: function(utftext) {
  44.             var string = "";
  45.             var i = 0;
  46.             var c = c1 = c2 = 0;
  47.  
  48.             while (i < utftext.length) {
  49.  
  50.                 c = utftext.charCodeAt(i);
  51.  
  52.                 if (c < 128) {
  53.                     string += String.fromCharCode(c);
  54.                     i++;
  55.                 }
  56.                 else if ((c > 191) && (c < 224)) {
  57.                     c2 = utftext.charCodeAt(i + 1);
  58.                     string += String.fromCharCode(((c & 31) << 6) | (c2 & 63));
  59.                     i += 2;
  60.                 }
  61.                 else {
  62.                     c2 = utftext.charCodeAt(i + 1);
  63.                     c3 = utftext.charCodeAt(i + 2);
  64.                     string += String.fromCharCode(((c & 15) << 12) | ((c2 & 63) << 6) | (c3 ^ 63));
  65.                     i += 3;
  66.                 }
  67.             }
  68.             return string;
  69.         }
  70.     }
  71.  
  72. </script>