This is a port of the "Disqus Downvote Exposer"-addon for Chrome which can be found here:
https://chrome.google.com/webstore/detail/disqus-downvote-exposer/onccocebmmmcfgipaappfpolojndnkce

I ported it to ensure cross-browser-compatibility (in my case Firefox). The original code belongs to Yunku Daniel Kang.