diff -r 322d0feea350 -r 89ef5ed3c48b src/cm/media/js/site/f_text_view_frame.js
--- a/src/cm/media/js/site/f_text_view_frame.js	Mon Jul 15 15:25:58 2013 +0200
+++ b/src/cm/media/js/site/f_text_view_frame.js	Tue Jul 16 14:29:46 2013 +0200
@@ -407,9 +407,9 @@
     var wish = $('#c_textpref_style').val() ;
     for (var key in styles) {
       if (key == wish)
-        frames['text_view_comments'].CY.get("#textcontainer").addClass(key) ;
+        frames['text_view_comments'].CY.one("#textcontainer").addClass(key) ;
       else 
-        frames['text_view_comments'].CY.get("#textcontainer").removeClass(key) ;
+        frames['text_view_comments'].CY.one("#textcontainer").removeClass(key) ;
     }
   };