title: UIScrollView menu and parallax effect
body: <p>I need to create a main menu for my app with a UIScrollView. I have some images inside it that can be clicked. When I scroll the UIScrollView I need that on the background there are other two views that move creating a parallax effect.
  Can someone provide me a sample code? I'm trying to work with </p>
  
  <pre><code>-(void) scrollViewDidScroll:(UIScrollView *)scrollView
  </code></pre>
  
  <p>but I cannot find any productive example about applying on my project.</p>