Vortex

[The Professor]

Demonstrates the use of 2 iframes, in the main page, that contain the vortex images. The iframes point to an external subdirectory where they are stored. Doing this allows them to be manipulated independent of the ain page.
This is how the closing vortex sequence was achieved.

This is the main page
http://d21c.com/leprofesseur/vortex.html

These are the pages that actually contain the vortex images

http://d21c.com/leprofesseur/b/vortex.html

http://d21c.com/leprofesseur/b/vortex-b.html

that refresh to
http://d21c.com/leprofesseur/b/vortex-1.html
http://d21c.com/leprofesseur/b/vortex-b1.html

where the css animation takes place.