1. Thank you. Figured out.
2. The library will have its own and should not have to access Amazon. I wish that when you hover on the cover of it increased. Here is an example of how to do it on a normal site videouroki.su/video-urok-plavnoe-uvelich...kursorom-myshi.html,
but how to make a Joomla I can not imagine.
3. Yes. I displayed subcategory. I want a user to expand or collapse, pressing, such as is done here alt-f4.ru/expanding-menu-by-jquery