Still, the Emily's website is up and works fine with Firefox 31 under XP.
If necessary, use a recent portable version if you do not want to upgrade your local browser.
I often use this principle as to whether it is a browser problem or if it comes from other things.
Alternatively, go through a free proxy. This also can solving some problems of operation depending on the problem.
Firefox 31 screenshot, the 2016-01-14, 06H48 from France