PlatformUI.getWorkbench().getBrowserSupport();
IWebBrowser browser = support.createBrowser("otro.browser");
// browser.openURL(new URL("http://www.eclipse.org"));
UrlDialog url = new UrlDialog(HandlerUtil.getActiveShell(event));
url.open();
String feedUrl = url.getUrl();
Feed f = RssUtil.createFeed(feedUrl);
Root.getInstance().addFeed(f);
} catch ( Exception e) {
e.printStackTrace();