Re: adding collapsable function to existing modules
If I recall correctly, you'll have to upgrade to Tiki 1.9.0 to get that feature for all modules. Somebody could probably let us know for sure, but in the meantime to check if it's in your Tiki, look at your Admin/Features page (/tiki-admin.php?page=features), down near the bottom in the User Features section. If there's an item "Users can Shade Modules," you can activate it. If it's not there, you'll have to upgrade first.
-- Gary