Works with Firefox 3.0 and later

-Fixed: Upon initial install, Firefox had to be restarted two times.
-Fixed: multiple search boxes should be working now.
-Fixed: additional themes were not available upon install. Switching between themes didn't work.
-Fixed: Unable to change background image on themes already having an image.
-Fixed: it's now possible to drag-drop thumbnails between pages (scroll mouse wheel while dragging)
-Fixed: When removing a folder, cached images of child thumbnails were not deleted.