[jQuery] "$(document).ready(function() {" giving error "$ is not a function" - what am I doing wrong?

[[EMAIL PROTECTED]]

Test page here - http://www.justice.net.nz/static.html

Jquery is definitely being loaded - I'm currently pulling it from
jquery.com, and Firebug is showing that it has loaded.

Any ideas? This is my first attempt at jquery and I'm falling at the
first hurdle :<