Many millions of thanks to mr_zog and redryder52 for their excellent help with fixing my Internet Explorer display problems.

For those of you viewing this in Internet Explorer, you'll need to be told that there's a nifty bit of alpha transparency going on right at the edge of the white panel which shows up very badly because IE doesn't handle transparency.

the frankly wonderful mr_zog and redryder52 did point me at a solution to this slight problem, and I'll try and follow their advice later on today. In the meantime, you can sit and contemplate the beauty you're missing out on by using a crap browser.