*            the position of <code>dockable</code>.
	 * 
	 * */
	public void splitComponent(Component base, Container dockablesContainer,
			DockingConstants.Split position) {
		if (dockablesContainer instanceof SingleDockableContainer) {
			splitComponent(base,
					((SingleDockableContainer) dockablesContainer)
							.getDockable(), position);
		} else if (dockablesContainer instanceof TabbedDockableContainer) {
			splitTab(base, (TabbedDockableContainer) dockablesContainer,
					position);
		} else {
			System.err.println("unknow split request !" + dockablesContainer);
		}
	}