Firefox add-on for copying containing folder for a downloaded file

I've created small add-on which extends standard context menu in Download Manager. I think that it can be useful for those people which who uses some kinds of file managers like Far, Total Commander and etc.

Usually after downloading of a file I need to open containing folder it my Far manager. But there is no basic way to copy path of the folder which contains a downloaded file. So, I've added one menu item in Download Manager context menu. It allows to do exactly that I need - copy containing folder for a downloaded file.

Hope that it will be useful for someone too. You can download this extension here.