jQuery UI Slider Captcha
Added options page
Updated methods for checking that jQuery and jQuery UI have loaded and attempts to load them if not.
Changed method of inserting into DOM, reducing number of inserts.
Added options page in the administration panel.
Added ability to override CSS styles by selecting your own CSS file.
Tested with version 3.4.1
Tested with WordPress version 3.4, worked as expect.
Very basic usage, shouldn't have any problems.