title: html 5 appcache user controlled updating
body: <p>I'm working on an ipad webapp that will receive monthly changes.
  However I can not figure out how to let the user decide weither to update the cache or not. The ipad tends to just go ahead and update when it notices a change to the manifest file. I would like to prevent this so users that haven't finished reading this months issue can update when they feel like it. I've searched for a solution to this question but I fail to find any usable information.</p>
  
  <p>The way my app is set up is I've got a content page that fetches data from the database and all the other files (appart from media that is added to the content page) is static.</p>
  
  <p>I have an cache.manifest with every file in it and a version number automatically changed on update at that top in a comment.</p>
  
  <p>So an update to the content means a new manifest and that means the updateReady event is fired. If anyone could give me any pointers on how to catch this and prevent it from automatically switching to the new version, that would be nice.</p>
  
  <p>Thanks!</p>