jQuery Plugin Tutorial: test-alery won't display
<p>I'm new to js and jQuery - following this tutorial:
<a href="https://www.youtube.com/watch?v=c9oKDHP8Q8s" rel="nofollow">https://www.youtube.com/watch?v=c9oKDHP8Q8s</a></p>

<p>... as far as I can tell, my code is identical to that visible at 4:13, and yet my alert doesn't show.
The only difference is the google library is a newer version. I've scoured the code for any typo, and can't  find one.</p>

<p>I'm using up-to-date versions of Firefox and Chrome (works in neither). Alerts prompts work in regular javascript.</p>

<p>Here's the html file:
<a href="http://www.filedropper.com/jqueryplugintut" rel="nofollow">http://www.filedropper.com/jqueryplugintut</a></p>

<p>If anyone can give me a clue what's wrong here, I'd be grateful!</p>
