title: Term for rotating header
body: <p>I'm looking for terminology that describes this behavior:  </p>
  
  <p>The header of a web-page contains a different image every time you visit it.</p>
  
  <p><strong>Update:</strong> It is not an advertisement, but images related to the subject of the site.<br>
  E.g. An imaginary site for a bakery would show, next to the logo, randomly</p>
  
  <ul>
  <li>a picture of the front of the shop</li>
  <li>a macro shot of some patisserie</li>
  <li>...</li>
  </ul>
  
  <p>More specifically: I'm building a Drupal site and was looking for a theme or module that could help me do that, but don't know the term to search for. 'Rotate', 'Image', 'Header' are rather ambiguous.</p>
  
  <p>Related question: <a href="https://stackoverflow.com/questions/1326758/how-to-implement-seasonal-logos-in-drupal">How to implement seasonal logos in Drupal?</a><br>
  But without the time constraints: I'm looking for 'just a random header for every visit'</p>
  
  <p>Thanks!<br>
  Jan</p>