} else {
					return ( clientRect.top < staticHeight );
				}
			}
		};

		positionSticky.init();

		CKEDITOR.document.getWindow().on( 'scroll',
			new CKEDITOR.tools.eventsBuffer( 100, positionSticky.checkAll, positionSticky ).input
		);

		// Make the toolbar sticky.
		positionSticky.watch( CKEDITOR.document.findOne( '.editors-container' ) );

		// Help button and help-content.
		( function() {
			var helpButton = CKEDITOR.document.getById( 'help' ),
				helpContent = CKEDITOR.document.getById( 'help-cont