code: function(month) {
          var cfgPageDate = DEF_CFG.PAGEDATE.key,
              current = this.cfg.getProperty(cfgPageDate);
          current.setMonth(parseInt(month, 10));
          this.cfg.setProperty(cfgPageDate, current);
      }
docs: BEGIN GETTER/SETTER METHODS 
  Sets the calendar's month explicitly
  @method setMonth
  @param {Number} month  The numeric month, from 0 (January) to 11 (December)