function to serialize a form to JSON

gistfile1.txt

  $.fn.serializeObject = function () {
      var o = {};
      var a = this.serializeArray();
      $.each(a, function () {
          if (o[this.name] !== undefined) {
              if (!o[this.name].push) {
                  o[this.name] = [o[this.name]];
              }
              o[this.name].push(this.value || '');
          } else {
              o[this.name] = this.value || '';
          }
      });
      return o;
  };