code: function _hideYearPicker(bSkipFocus){
  
  		this._iMode = 0;
  
  		var oYearPicker = this.getAggregation("yearPicker");
  		oYearPicker.$().css("display", "none");
  
  		this._hideOverlay();
  
  		if (!bSkipFocus) {
  			_renderTimesRow.call(this); // to focus date
  
  			// restore tabindex because if date not changed in _renderTimesRow only the focused date is updated
  			var oTimesRow = this.getAggregation("timesRow");
  			jQuery(oTimesRow._oItemNavigation.getItemDomRefs()[oTimesRow._oItemNavigation.getFocusedIndex()]).attr("tabindex", "0");
  		}
  
  	}
docs: Hides an embedded year Picker.
  This function assumes there is a "yearPicker" aggregation.
  So callers must take care.
  @return {void}
  @private