_downloadSrtmMenu.setEnabled(false);
JMenuItem downloadStrmGl1Item = makeMenuItem(new DownloadSrtmFunction(_app, new SrtmGl1Source()));
_downloadSrtmMenu.add(downloadStrmGl1Item);
_downloadSrtmMenu.setEnabled(false);
JMenuItem downloadStrmGl1Item = makeMenuItem(new DownloadSrtmFunction(_app, new SrtmGl1Source()));
_downloadSrtmMenu.add(downloadStrmGl1Item);