tbmanager.add(fHistoryDropDownAction);
	private void fillMainToolBar(IToolBarManager tbmanager) {		tbmanager.removeAll();		tbmanager.add(fHistoryDropDownAction);		for (int i= 0; i < fViewActions.length; i++) {			tbmanager.add(fViewActions[i]);		}		tbmanager.update(false);		}