I paste the javascript from the above example directly into a sample index.html I made, in the head tag. I copy and paste the css into the style.css file connected to the index.
All I get is a button, a bunch of repeating images (that are supposed to show up in the overlay) and… a non-working example.
I do notice that when I go to download the jquery library, when I click on “download” it just shows the javascript in the browser. I had to copy and paste all of it into a new file and save it as “jquery-1.7.1.min.js”
On a side note i personally don’t use local references of the jQuery library anymore, i now use the Google code CDN which is a lot faster and always changes with each new version that comes out.
If you want a version specific to a plugin then you can simply use the below URL for example and change the version number until you find the correct release.