code: function ( DragEvent ) { 
  		var PinControlPins = document.getElementById ( 'PinControl-Pins' );
  		if ( 30 > DragEvent.clientY - document.getElementById ( 'PinControl-Pins' ).getBoundingClientRect().top ) {
  			PinControlPins.scrollTop = PinControlPins.scrollTop - 30;
  		}
  		else if ( 30 > document.getElementById ( 'PinControl-Pins' ).getBoundingClientRect().bottom - DragEvent.clientY ) {
  			PinControlPins.scrollTop = PinControlPins.scrollTop + 30;
  		}
  	}
docs: /*
  
  --- _onDragOver( DragEvent ) ---
  
  dragover event handler
  
  This event scroll the control when the mouse is near the top or bottom border