Okay, I'm wondering if there is a way to do something here.

I have a class called menu. Whenever something is declared as class="#menu", I want all the td and table tags inside to have certain attributes. Is this possible?

yes


css:
#menu td, #menu table, #menu tr, #menu th {attributes go here like usual}

hmm maybe it's just a minor detail, but just wanted to mention you shouldn't make class names like "#menu" as #menu usually references an element with an ID="menu" not a class. classes are defined .menu{ }

so If I have external CSS can I go:

.menu #td
{
Attributes Here
}

and then any table cell in the menu class will have said attributes?

actually, it would be

td.menu {
attributes go here
}

very nice. veeeerrry nice

It works.