This was discovered while working on LCC. Try it with your browser of choice; if the navbar backgrounds change color when you roll-over them, you're using a CSS appropriate browser. If they don't, that means your browser is probably Incompetent Exploder.
Browsers I have used by order of preference:
- Firebird (Mozilla's other browser)
- Incompetent Exploder
Just as a note. IE smegs alot of things up (like that "glitch" I had earlier, where there were some spacings off; it looked right in IE because IE rendered things wrong. I had made a mistake.).