Flash Game Help! The game runs too slow in a browser!

lo there!
I’am so frustrated!

I have made a plattformgame in flash, and after I had published it I tested it (local) when it was embedded in a browser, and it hacks and laggs! But when I play it in the flash player it works just fine.
What should I do?

I removed all the heavy graphics, lowerd the fps to 30fps and removed all the code so now its just the bassis left (gravity, collision, key checking etc. and yes u should bounce on the walls giving a wall jump effect).

Anyone please! I am in big need of help!
Is it my code? Did I publish it wrong?

here are the links:

http://smh03.lbs.se/smh03niklas/profilbollen/profilbollen.swf
http://smh03.lbs.se/smh03niklas/profilbollen/profilbollen.fla
http://smh03.lbs.se/smh03niklas/profilbollen/profilbollen.html

//Qui