Button action affecting the attached MC in which it resides

Question: can a button within an attached movie clip remove that movie clip?

Here’s the scenario:

click a button, down slides a movieclip, called attacherBar. To this is attached another movieclip, called viewnit, which slides into view from the left. In viewnit mc is a button called closeBtn. The idea is, click on closeBtn and the whole process reverses itself, including removing the attached movieclip viewnit.

Unfortunately, it doesn’t seem to work. A closeBtn sitting on the stage, not connected to any movieclip, works fine. But the closeBtn in the attached clip won’t function.

Any ideas?