Let's start looking at jQuery:
For those who never used jQuery please read: How does jQuery work?
Create one or more 200x200px 'animations' (using html elements, text, images, whatever) that runs & loops automatically (without user interaction for now...)
All jQuery code is in the page if you want to have a look...
And view all
(I heard you like jQuery so I use some jQuery to load your jQuery)
(somebody has his 'pass' for this subject I guess)