data URL patch for version Rated 4 out of 5 stars

Here is a solution for the "Plus One Button - Firefox Add-On" version that stopped working today due to the dependency on making an external request to which seems down due to a DNS problem or similar.
To solve the problem and avoid similar issues in the future, I suggest using a local data:URL instead, which does not need a third-party server.

This is done in the file "%AppData%\Mozilla\Firefox\Profiles\[...]\extensions\\chrome\content\ff-overlay.js" (XPI is a ZIP archive), by replacing the function onPanelOpen() from line 53 by the following:

All the best,

This review is for a previous version of the add-on ( 


Thanks, I'll add your code to the updated version.