docs: function (_selMonth) {
              var month = _encodeMonth(this, _selMonth), _el = this.element;
  
              if (month) {
                  var date = new Date( _toYear(month), month % 12, 1 );
                  _el.val( this._formatMonth( date ) );
  
                  this._updateAlt(0, date);
                  this._validationMessage.hide();
              } else {
                  this.Clear();
              }
  
              this._ajustYear(this.options);
              this._showMonths();
          }