title: iPhone view switching - curl transition
body: <p>I'm loading a view in my app with the following code:</p>
  
  <pre><code>- (void)showPicker {
  ImagePickerViewController *imagePickerView = [[ImagePickerViewController alloc] initWithNibName:@"ImagePickerViewController" bundle:nil];
  [self.navigationController presentModalViewController:imagePickerView animated:YES];
  </code></pre>
  
  <p>}</p>
  
  <p>How can I load it with a curl up/curl down transition?</p>
  
  <p>Thanks in advance,</p>
  
  <p>Yassin</p>