hmmm... if they don't work still after loading the unchanged template then it could be a conflict with your javascript I see. You also might spend a little time working on the html in the header, not sure if that has any effect on it, but your site will load a bit faster once the tables in the header are cleaned up
w3 and you - you are missing a td and tr in there, looks like
<!--- Stylesheet Include --->
should be :
<!-- Stylesheet Include --> - some browsers will choke on the extra -
