Hack for firefox 3 on windows?

Hello,

I was hoping someone else has run into this problem. I applied a blur filter to an mc in flash using as3.0. I export as an swf load it onto my site and everything is fine. Once i load the html that is exported from flash along with the js file a strange thing happens. The intial function that blurs the mc works fine but once i remove it or call out the function again it jitters. So swf on server by itself works fine…embedded in html file using js it screws up. Firefox on osx works fine…safari…ie on windows and mac (go figure)
Defualt html and js file are used from publishing in flash cs3 with as3

any help would be great

thanks,
Chris