FixedHeader: add a class for when the div is fixed and not absolute

nrogers64

I'd like to style the table headers differently when they're floating vs when they're where they're supposed to be. I see that there is a div with three classes:

FixedHeader_Cloned
fixedHeader
FixedHeader_Header

Would it be possible to have a class be present when that div's position is fixed and not absolute? It wouldn't have to be a customizable option or anything; it could just always set a class. Perhaps you could even set a class for both scenarios, like "FixedHeader_Floating" and "FixedHeader_Not_Floating".

Thank you!