FancyForm is a powerful checkbox replacement script used to provide the ultimate flexibility in changing the appearance and function of HTML form elements. It’s easy to use and degrades gracefully on all older, non-supporting browsers. This is very quick to setup (only two lines of markup needed). It also numerous customization options.
The script itself is free. FancyForm uses the ultra-lightweight Mootools JavaScript framework and this is included with the download. Want to see the FancyForm in action here or download from here.