title: How to animate a UIView while loading from top to bottom like shutter?
body: <p>I am trying to develop a iphone application. I know how to slide a view from left to right while pushing into navigation stack. But my requirement is to animate the view from top to bottom while pushing into navigation stack. So how to do that?</p>
  
  <p>I am searching google but have not found any satisfying result.. If somebody knows it... Please tell me how to do that.</p>
  
  <pre><code>info = [[InfoView alloc] initWithNibName:@"InfoView" bundle:nil];   
  [self.navigationController pushViewController:info animated:YES];
  </code></pre>