I've got a variable that holds a jQuery object.  I would like to filter out all of the visible elements in that jQuery object.  The problem is once I'm using a variable and not the jQuery object itself I don't know the semantics for filtering it.

I have something like this:

var Foo = $("#Bar");
FilterFunction(Foo);

function FilterFunction(Foo) {
    var Test = $(Foo + ":visible");
}

What is the correct syntax?

Thanks very much,

BKahuna