Thanks for your help Rattus :)
I’ve just checked and it works fine in Chrome and Safari as well, so it’s only IE that has the problem
I drafted the page because it wasn’t working in IE but I’ve re-published it again so you can have a look. I’ve also got IT looking at it for me too
I noticed it worked okay in Firefox but nothing appeared in Internet Explorer.
I will let our IT support know about the jQuery issue.