code: function(nYear) {
          var yrPattern = YAHOO.widget.CalendarNavigator.YR_PATTERN;
          if (YAHOO.lang.isNumber(nYear) && yrPattern.test(nYear+"")) {
              this._year = nYear;
          }
          this._updateYearUI();
      }
docs: Sets the current year on the Navigator, and updates the UI. If the
  provided year is invalid, it will not be set.
  
  @method setYear
  @param {Number} nYear The full year value to set the Navigator to.