Whoops, bugs in the script…
One serious one that will stop it working for anyone, and others that may or may not affect most people.
In the comments of the script (the top part where I explain the versions, etc.) each line is supposed to start with a semicolon ; but one line starts with a colon : and it will cause the script to break. OOOOPS!!
So, feel free to edit that colon into a semicolon.
The other bugs are browser related, and I don’t yet have a good solution that works on all major browsers, so… I’m working on it. If you’re having trouble, let me know as it might help me to find a good solution. I will post an updated version as soon as I have it finished.