Plugin to Display Thumbnail Rows on Side and Main Image on Hover

I’m developing https://img836.imageshack.us/img836/7869/saffcdesign1.jpg as a WordPress Theme. I’m looking for a plugin that works preferably with NextGen Gallery to display rows on image thumnails on one side of the gallery and when you hover over the thumbnail, the full image is displayed on the other side of the gallery. Take a look at the gallery under the Our Glorious Moments heading in the mockup that I’ve provided. I’m pretty sure I’ve seen one before, however I can’t remember what its called. Any assistance would be appreciated.