function changeVisualzer(num:int):void
{
if (!toggled)
{
_vis1.removeSelf();
_vis2.removeSelf();
return;
}

if (_vis1.active) _vis1.removeSelf(); else if (_vis2.active) _vis2.removeSelf();

if (num == 1) addChild(_vis1) else if (num == 2) addChild(_vis2);
}