private void eventMenuPopup(  ) {

  try {

      URI uri = new URI( Data.WIKI_URL + underscoreName( getWikiTopic() ) );
      Desktop desktop = null;
      if ( Desktop.isDesktopSupported() ) {
        desktop = Desktop.getDesktop();
      } // if

      if (desktop != null) {
        desktop.browse(uri);
      } // if

    } // try
    catch ( IOException error ) {
      JOptionPane.showMessageDialog( Data.getView(),
                                     "^Wiki Error: " + error.getMessage(),
                                     "Wiki Error: "  + Data.APP_TITLE,
                                     JOptionPane.ERROR_MESSAGE );
    } // catch
    catch ( URISyntaxException error ) {
      JOptionPane.showMessageDialog( Data.getView(),
                                     "@Wiki Error: " + error.getMessage(),
                                     "Wiki Error: "  + Data.APP_TITLE,
                                     JOptionPane.ERROR_MESSAGE );
    } // catch

  } // eventMenuPopup ----------------------------------------------------------