Actionscript / Javascript - change css style

English speaking people only. I've had too many communication issues in the past. I have a flash file with 4 buttons, I want it so when you click on of these buttons it changes the style sheet for my website. It has to be called from within my swf, and tell the page to use a new style sheet. I have successfully done this with javascript as you can see here: [login to view URL] - but I dont know how to do it from within flash. I believe its pretty easy, but im not so great with code.