Scene optimization? flash player vs browser

hi i’m new here, hoping someone could offer some advice.

myself and a few people are in the process of creating a game, which im working on the environments for. the animations look really clean in a flash player. however once in a browser, its really slowing down my system to an absolute crawl. i’ve tried flattening most masks/vectors to png and keeping it as simple as possible. here is how it looks:

http://www.pages.drexel.edu/~dpf24/senior_project/swf/4-10-06/mainGame.html

for a real blatant example, toggle the sane/insane button. is there any way to optimize this?? anyway for it to run as smooth as it does in a flash player as it does in a browser?

thanks

edit: since posting this i’ve decided to set the quality at medium and during extreme animation drop it to low. i dont think this can be a longterm solution so any ideas?