I've tried using jstz on my site, but I keep getting the error jstz is undefined.
The example on the example site also doesn't work.
If it is undefined it has not been loaded to beging with (the script is unavailable).
It looks like bitbucket doesn't allow linking to files in a repo any more.
Thanks for noticing, please use this: http://cdnjs.com/libraries/jstimezonedetect to load the script, or download and host it yourself.
But there is no bug in this respect.