Live preview: http://necessaryevil.icyboards.net/forumdisplay.php?fid=34
Features: toggling header content. Click the link beneath the site name, and it'll open and close your extra content. The content will remain open or closed based on whatever the last click was upon refresh (so if you choose to expand the content and leave it open, it will still be there when you go to another page). The forum descriptions are also made so that you can put an image in them, and the description of the forum will automatically be hidden behind it and revealed upon hovering over the image. No extra code needs to be inserted into the description to make this happen, simply put in your description and image. :)
For full functionality, make sure you read the documentation posted in the live preview link.