Widget not working on firefox


My widget does not work on firefox but is ok on all other browsers, it stopped working on 2nd December 2013, any ideas? Im getting it in the neck here!

Tweets by @Georges_March

This is the script (Not that I can see what will be wrong with it as its working in Chrome, and IE)


Been digging a bit with this problem occuring on a site of mine. Discovered it also doesn’t work on a Twitter docs page:

Thinking, if they can’t get it to work, I don’t stand a chance!