It's looking great - but the RB screenshot looks a bit distorted, so the text is a bit fuzzy - I think you need to measure the screenshot that you're sending (height and width) and enter those dimensions on the webpage so that it's in the right proportions.
This means that you need to get your map area the correct dimensions on the RadarBox screen (and stick to them). It's a bit of a pain - it would be nice if AirNav could let us set map dimensions for FTP independent of the actual size on the screen - I might add that to the suggestions thread.
Hope that helps.
Rod