Firefox Addons: Hidden in XUL Overlay?

Question

I\'m trying to load and manipulate a hidden tag in my overlay (part of my addon\'s functionality) in my Firefox Addon. But, I can\'t access an

Answer 1

Overlays always have to extend an existing element. If you have a tag at the top level of an overlay with an ID that doesn't yet exist in the document then this element is simply ignored (