A cool thing certainly, but unless I'm wrong (always possible), that allows me to change how a page looks to me, while what I'm looking for would allow a change to how the page looks for everyone. I will also admit, up front, that I've no earthly clue as to how you get around the only valid in the header problem, that's why I was hoping someone else had figured it out...
–hsm
"Never try to teach a pig to sing…it wastes your time and it annoys the pig."