AS 3 library class links and clips within the linked object?

I’ve found several threads on the MOUSE_UP “problem” with AS3 where onReleaseOutside, in its AS2 form, doesn’t work. The solution being to add a MOUSE_UP event to the Stage.

Question is, if I have a slide-bar class, a simple dragger, its it happens to be added to a movieclip thats in another movieclip etc, do I have to adjust my class continually so that I use: this.parent.parent.parent etc. to get to the Stage to set this listener? I can’t just set it using Stage.addListener.

I think this looks cryptic - but to those that have run into this specific MOUSE_UP issue, I’m sure this will look familiar.

Thanks for any input in advance.