Simple and easy-to-see progress bar "Ajax Progress Bar" made with AJAX and CSS

The operation feeling is AJAX, images etc. are easy-to-understand progress bars implemented by CSS. You can easily display the progress status etc. You can also increase or decrease by 10% each time you click. It seems to be applicable to development of various web applications.

Details are as below.
WebAppers Simple Ajax Progress Bar with CSS by Web Apps

License is provided with MIT license and you can try out from the following from the following.

Demo
http://www.webappers.com/progressBar/

Actually downloading uses prototype.js, and there are two types of image images to use. It is quite a good idea to express increasing and decreasing bars in that combination.