Bug 215941 [Help] Help content for dialogs should open in a new window
bundles/org.eclipse.ui.browser/src/org/eclipse/ui/internal/browser/DefaultBrowserSupport.java
instance = this;
		BrowserManager.getInstance().addObserver(new Observer() {
			public void update(Observable o, Object arg) {
				
				
				
				
				browserIdMap.clear();
			}
		});
	}
	protected static DefaultBrowserSupport getInstance() {
		return instance;
	}
	protected IWebBrowser getExistingWebBrowser(String browserId) {
		try {
			Object obj = browserIdMap.get(browserId);
			IWebBrowser browser = null;
			if (obj instanceof IWebBrowser)
				browser = (IWebBrowser) obj;
			else if (obj instanceof HashMap) {
				HashMap wmap = (HashMap) obj;
				IWorkbenchWindow window = PlatformUI.getWorkbench()
						.getActiveWorkbenchWindow();
				if (window != null) {
					browser = (IWebBrowser) wmap.get(getWindowKey(window));
				}
			}
			if (browser != null)