How one can load some js on SilverStripe pages?
Whereas on the SilverStripe site it's completely lacking...
You should probably add
to your init method.
Some other file seems to be missing on the SilverStripe site as well. I get the following error in firebug:
uncaught exception: jsMath can't load the file 'http://weyl.math.toronto.edu:8888/devsite/test/jsMath-fallback-symbols.js' Error status: 404