code: function ( MouseEvent ) {
  		var PinsElement = document.getElementById ( 'PinControl-Pins' );
  		if ( PinsElement.style.visibility !== "hidden" ) {
  			_MaxHeight += 100;
  			PinsElement.setAttribute("style", "max-height: " + _MaxHeight + "px" );
  		}
  		MouseEvent.stopPropagation ( );
  	}
docs: /*
  
  --- _onClickExtend( MouseEvent ) ---
  
  onclick event handler for the Extend button
  
  This event extend the pins control