code: function(elem, year, month, day) {
  			var inst = this._getInst(elem);
  			if (!$.isEmptyObject(inst) && (day != null ||
  					(inst.drawDate.year() !== year || inst.drawDate.month() !== month))) {
  				inst.prevDate = inst.drawDate.newDate();
  				var calendar = inst.options.calendar;
  				var show = this._checkMinMax((year != null ?
  					calendar.newDate(year, month, 1) : calendar.today()), inst);
  				inst.drawDate.date(show.year(), show.month(), 
  					(day != null ? day : Math.min(inst.drawDate.day(),
  					calendar.daysInMonth(show.year(), show.month()))));
  				this._update(elem);
  			}
  		}
docs: Set the currently shown month, defaulting to today's.
  @memberof CalendarsPicker
  @param elem {Element} The control to affect.
  @param [year] {number} The year to show.
  @param [month] {number} The month to show (1-12).
  @param [day] {number} The day to show.
  @example $(selector).datepick('showMonth', 2014, 12, 25)