Free up some cpu usage?

Hi

I´m building this site for a bungalow park. It´s a isometric representation of the place. User controls a little dude that walks around the place. Yous can check it here:

http://printaporter.net/ai/index.htm

Thing is my coding skills are very much limited. Code is rather unefficient i´m afraid and it gets preatty heavy on the cpu (as u can see). Now when u open a content window with slideshow of some shots of the bungalow it really slows things down some more. To see the window open click on “bungalows on the menu bar” then choose “tipo A”.

Could i stop all the loops that check for collisions and other things going on on the main stage while the content window is open? Is there something like:

_root.stopAllProcessing

This site is getting out of my hands and i´ve put a lot of work into it.

Ideas?