@FXML void menuAction(ActionEvent e){
        if(e.getSource() instanceof MenuItem){
            switch(((MenuItem)e.getSource()).getText()){
                case "Import Wizard...":showInputFrame();break;
                case "Exit":exit();break;
                case "Overview": showOverview();break;
                case "NOD Chart": showNODChart();break;
                case "Wilcox Chart": showWilcoxChart();break;
                case "DAVID analysis": showDAVID();break;
                case "Document": showDocument();break;
                case "About": showAbout();break;
            }
        }       
    }