Get vars from initial URL that starts F.Movie


My FM is embedded in the HTML-file startmovie.html?var1=bla&var2=nr .

How can I load these two variables *var1 *and var2 into variables in my Flash Movie?

I know how to send and load vars from PHP-scripts but the Movie is allready running at that time. Now I want to start the movie (through the HTML-page) and get the arguments from the URL that contains the FM.