Am I root or child?

Question

I must be brain dead right now. How can I test if my AS3 code is executing from root or from a child mc that has been imported into a larger project via the loader class?
Details:
I’ve got a tutorial that is published both as a standalone projector (exe) and as an swf imported at runtime into a larger project. If the tutorial is running by itself as a standalone projector it needs to execute a few fscommands and perform some other housekeeping chores. If the tutorial is running as a child of the larger project these chores must be skipped. I can’t test Capabilities.playerType because the parent can also run as a standalone projector.
It's simple, but here's what I had before I realized the parent might also be standalone:
var gRunMode:String = Capabilities.playerType;
function initFrame():void {
<snip> blah, blah, blah...</snip>
        if (gRunMode == "StandAlone") {
              var myMask:projectorMask = new projectorMask();
              this.addChild(myMask);
              this.mask = myMask;
              fscommand("fullscreen","true");
              fscommand("showmenu","false");
              gotoAndPlay("mcStart");
<snip> blah, blah, blah...</snip>
Thanks

Answer 1

This works, I must be tired:
if (this.parent == this.stage) {    }
this.parent = stage object when I'm root
this.parent = loader object when I'm loaded into the larger project