title: Scrollable UINavigationBar similar to Mobile Safari
body: <p>My application uses a <code>UINavigationController</code> and the final view (detail view) lets you view an external website within the application using a <code>UIWebView</code>.</p>
  
  <p>I'd like to free up some additional screen real estate when the user is viewing a webpage and wanted to emulate how Safari on iPhone works where their URL bar at the top scrolls up and off the screen when you're viewing content in the <code>UIWebView</code> that's below the fold.</p>
  
  <p>Anyone have ideas on how to achieve this? If I set the <code>navigationBarHidden</code> property and roll my own custom bar at the top and set it and a <code>UIWebView</code> within a <code>UIScrollView</code> then there are scrolling issues in the <code>UIWebView</code> as it doesn't play nicely with other scrollable views.</p>