Hover captions inside movie clip?

I’ve used this tutorial to make hover captions for a website I’m designing and wondered if and how it is possible to adjust the code to make it work inside a movie clip.

e.g. make the hover captions a mc then place that inside another mc, which incidently is placed inside another mc! i.e. [m[m[hovercaptionsmc]c]c].

I hope this makes sense!!! Thank you in advance.