I need to play the "off" of a swf..from the main scene

I have: myLoader.contentPath = "services.swf"; which will play the "on" of the swf, when onRelease the "services" button, but I also want to play the "off" of the services.swf when onRelease on another buttonn like the "contact" button. How Can I let flash know that if it's in the services page don't play "off" but if it isn't to play the "off" which is in the same swf "services.swf"

I hope this makes sense.