I'm trying to achieve this menu list affect in the following link: http://www.karascupcakes.com/cupcakes.html

on frame 1 of my movie, i have a movie clip named imgholder.
I have a text box that accepts html. I'm loading an external text file into the box. In the text file is a <ul> list of items.

What I want to do is hover over the link, then display a specific image to load into the MovieClip.

Does anyone know what i can do to achieve this affect?