Stop var to be reset...or something like that

1

You can view the problem here

If you click on the radio_btn, it will simply go to the frame containing the radio_mc into which the first keyframe has:


myMusic = _root.container
myMusic = new Sound();
var volPercent = 30;
_root.radio.volumeFill._yscale = 30;
myMusic.setVolume(volPercent*2);
var title = "Music Off";

Choose a track (var title will change), change the volume (volumeFill and volPercent will change) and click back button (sends you back to the starting frame). The music will play fine.
The problem is if you reclick on the radio_btn, all the values of volPercent, volumeFill._yscale and title are being reset due to the above codes.
Anyone would have an idea on how to go around that problem?
:-/