title: Facebook - how to go directly to the request permission dialog with an iframe app?
body: <p>When a user accesses my facebook app via <a href="http://apps.facebook.com/myappxxxxx" rel="noreferrer">http://apps.facebook.com/myappxxxxx</a>, I want it to immediately show the request permissions fb dialog - like so many others do.</p>
  
  <p>I have tried all sorts of things - including php redirect using the getLoginUrl, javascript window location redirect using the same. </p>
  
  <p>The problem is that it shows a big facebook icon instead of the request permissions.  However, if you click on that icon, it in fact goes to the correct request permissions page!</p>
  
  <p>Does anyone know how to redirect to the facebook permissions page properly?</p>
  
  <p>I am using the PHP api and JavaScript SDK with an iFrame FB app.</p>