public void actionPerformed(ActionEvent evt){
		Object s = evt.getSource();
		
		if(s == menuExit){
			closeProgram();
		}else if(s == menuAbout){
			showAbout();
		}else if(s == menuAddGroup || s == btnAddGroup){
			addNewGroup();
		}else if(s == menuAddNote || s == btnAddNote){
			openNoteEditor();
		}else if(s == popEdit){
			treeMenuEditAction();
		}else if(s == popDelete){
			treeMenuDeleteAction();
		}
	}