Sound scripting

Hi

I’ve put this scipting at the beginning of of my flash file, but now I want to add a music on/off button. One button. What scripting do I use for the button?

 
mySound.stop();
mySound = new Sound();
mySound.loadSound("sound_1.mp3", false);
mySound.setVolume(40);
mySound.start(0, 100000);