Adding an Image to View Controller transition

Question

Hey Guys,

I currently have several view controllers and transitions set up throughout my app using:

//switches controller
ViewController2 *controller2 = [[ViewController2 alloc] initWithNibName:@"ViewController2" bundle:nil];
controller2.modalTransitionStyle = UIModalTransitionStyleCoverVertical;
[self presentModalViewController:controller2 animated:YES];
[controller2 release]; controller2 = nil;

What I really want is when the vertical transition is made, I want an image of bubbles to travel up the screen with the transition. Is there anyway of adding an Image to these transitions. If not I would like to know how to create this effect as I have seen it in apps before.

Thanks in Advance,

Adam