createRootWindow and showing the URL

I've a situation where I have an AIR application and I'm opening up windows which points to remote content.  This remote content prompts the user to enter login credentials. Is there any way I can use air.HTMLLoader.createRootWindow to show the URL I've just opened? As the AIR application is popping up this window, it'd be nice to show the user the URL so they understand that this window isn't some elaborate phishing attack.  Thanks  Sean