title: how to change a loaded stylesheet after initialisation of ckeditor
body: <p>Is it possible to dynamically change the loaded stylesheet for a ckeditor instance?</p>
  
  <p>i.e. i have a ckeditor instance with the following config:
  CKEDITOR.replace('_content', {"resize_enabled":true, "customConfig":"/kmt/js/ckeditor_config.js","contentsCss":"/custom/ckeditorstyle.css","contentWidth":"240"});</p>
  
  <p>Not very complicated. Afterwards i want to allow the user to dynamically change the contentscss attribute...</p>