How to incorporate multiple box covers?

[rerathbun]

Or, perhaps, a sort of diagonal view of old/new, like seen for the maps of Elsenborn Ridge (the site image shows both the standard map and the winterized version split along the long axis diagonal)?  

I like the diagonal idea, BUT the current maps are not 'clickable' and show only the half-and-half view.  Since the covers are not 'identical' like the terrain maps, you'd  have to be able to click on either side and see that entire cover -- I'd hate to miss some of the beautiful (or ugly) cover design.