title: How can I change the animation style of a modal UIViewController?
body: <p>I'm currently displaying a UIViewController like this:</p>
  
  <pre><code>[[self navigationController] presentModalViewController:modalViewController animated:YES];
  </code></pre>
  
  <p>and hiding it like this:</p>
  
  <pre><code>[self.navigationController dismissModalViewControllerAnimated:YES];
  </code></pre>
  
  <p>The animation is "slide up from the bottom"... then slide back down.  How can I change the animation style?  Can I made it fade in/out?</p>
  
  <p>Cheers!</p>