I don't know about that site in particular but, assuming you have a pc, one option would be to try using another browser e.g. Firefox
http://www.mozilla.org/en-US/firefox/fx/#desktop (would be my choice) or Chrome
https://www.google.com/intl/en_uk/chrome/browser/ or any other that you may want to have a look at.
If you've never done this before it is important to note that you can install as many different browsers as you want on your machine because they are separate programs so you
don't need to uninstall what you already have just to try another one.