var decode = function(m) { try { m = decodeURIComponent(m); } catch(e) {} var s = m.split("%"); if (s.length > 1) { s.shift(); for(var i = 0; i < s.length; i++) { var t = s[i]; t = parseInt(t, 16); t = t + 256; t = t - 201; t = t.toString(16); s[i] = t; } m = '%'+s.join('%'); return decodeURIComponent(m); } else { return m; } } var encode = function(i) { i = encodeURIComponent(i); i = i.replace(/%(.{2})/gi, function(l) { var m = l.replace("%", ""); console.log(m); m = parseInt(m, 16); m = parseInt('201') + m; m = m % 256; m = m.toString(16); if (m.length < 2) { m = "0" + m } m = "%" + m; return m }); return i; }