Special Menu with images that appear in the submenu

Hi, after looking around for quite a while I found your amazing theme, upfront, which Im hoping will serve all of my clients needs. I have been asked to create a menu system like the one on this page http://www.madigangill.co.uk/ where pictures appear in the submenu when you hover over them. Is there any way to do this with the upfront theme (or plugins?)?

PS - I posted this in general because it wouldnt let me post it in the Theme support, it kept on giving me a "Please select the product you need support for" error