title: How transition between layers in cocos2d?
body: <p>I have a menu scene hierarchy like so:</p>
  
  <pre><code>Scene
     |
  Background Layer
     |           |
  Main Menu    Settings Menu
  </code></pre>
  
  <p>I want to transition from the Main Menu to the Settings Menu without moving the Background Layer. There is plenty of documentation on how to transition between scenes, but nothing that I can find between layers. Both the Main Menu and Settings Menu layer are full screen with transparent backgrounds, I just want to slide in between them without moving the background.</p>
  
  <p>Simple problem, but I am totally stumped after searching the web for over an hour.</p>