I have fixed a bug with ZStyleSheet that was allowing the setting of the "useBrowserVersions" attribute to get out of sync with the browser lists selected for individual stylesheet objects. I also had that attribute on the ZSSAttributes object inspite of the fact that there was little point at that level. I have removed the pointless (IMHO) attribute from ZSSA and added a catch with resets the browser lists across the entire stylesheet if you switch browser versions on or off. You can get the updated version from http://www.zope.org/Members/haqa/ZStyleSheet Adrian... -- The difficulty of tactical maneuvering consists in turning the devious into the direct, and misfortune into gain. - Sun Tzu