title: Detect Ckeditor failure
body: <p>I suppose this is a more specific version of my recent question <a href="https://stackoverflow.com/questions/7718673/browser-sniffing-alternative-for-bugs-misbehaviors-not-lack-of-features">Browser-sniffing alternative for bugs/misbehaviors (NOT lack of features)</a>. </p>
  
  <p>CKEditor is known not to work on certain clients like iOS Safari. Rather than use hackish browser detection, is there a way to see at runtime whether ckeditor will work on the current browser so that I can not load it or fall back to an alternative in case it won't? </p>