Basic exercises

I've just finished 2 of the basic exercises, they are on this website: 

http://home.student.utwente.nl/p.j.pelt/basic/basic.html

And I've fixed the collision on my walking dudes, thanks to the code from Jan.

Working webversion is here:

http://home.student.utwente.nl/p.j.pelt/colide/index.html

Enjoy!