Post ye. code and I'll happily take a look!

1. I find that using the strict DTD and writing valid HTML cuts down on browser compatibility issues. I used to pull my hair out making IE and FF look the same, but since I started writing valid HTML with the strict DTD, I can't remember the last time I had a problem.

2. margin: auto (the way I normally center a div) only works when the div has an explicit width.

3. I don't think there's a standard way to center vertically that works in every browser.