actionscript 3 that open web navigator to a specified url compiled to exe and app for both environment (mac and pc)

I have to create an actionscript 3 that open web navigator to a specified url. But it has to be a exe and app for both environment (mac and pc)

The app need only launch the default browser et go to specified url. No hud, the app who launch exit automatically after.

I have Flash builder & Flash CC. I dont know anything to actionscript 3 😕😕

Anyone know how to do this? Any help will be appreciated. Thanks.