Updated HTML code example, removed instruction regarding images as there are no images referenced in the CSS file.
Improved code to (almost) meet JSLint standards of JavaScript coding. Testing done on Firefox 1, Firefox 22 (latest), Chrome 27 (latest), IE 6, IE 10, and Safari 4 for Windows. Tested with jQuery versions 1.3.2 and 2.0.2. No new issues found.
Improved the accessibility of the plugin by adding ARIA roles and properties to the generated content. Tested with JAWS on Windows XP in Firefox 22 (latest), Firebird 0.6, Internet Explorer 6, and Google Chrome 27 (latest). Tested with Windows Narrator on Windows 8 with Internet Explorer 10 (Desktop mode) and Firefox 22 (latest).