Assegnate 5 su 5 stelle

works fine in Fx 3.6.3 if you create chrome.manifest in root of extension and change maxVersion in install.rdf from 2.0 to 3.6.* using a file archiver, like 7-zip. why create chrome.manifest? contents.rdf manifest format is no longer supported at all starting with Gecko 1.9.2; add-ons already installed using this format will continue to work but can no longer be installed.

chrome.manifest:
http://pastebin.com/raw.php?i=tXuSK8N2

reference:
https://developer.mozilla.org/en/Chrome_Registration