This article explains how to add a toolbar button to a Toolkit application (such as Firefox, Thunderbird, or Nvu) using overlays. Its intended audience is extension developers with a basic knowledge of XUL and CSS.
This article explains how to add a toolbar button to a Toolkit application (such as Firefox, Thunderbird, or Nvu) using overlays. Its intended audience is extension developers with a basic knowledge of XUL and CSS.