private void openUrl(IWorkbench workbench) {
try {
final IWebBrowser browser = workbench.getBrowserSupport().getExternalBrowser();
final URL url = new URL(urlString);
browser.openURL(url);
} catch (PartInitException e) {
logger.warning("Failed to create browser: "+ e.getMessage());
} catch (MalformedURLException e) {
logger.warning("Failed to parse URL string "+ urlString);
}