AJAX Progress Indicator
I’ve been working on integrating AJAX into my project. It wasn’t easy, but I got the data to load dynamically.
Depending on how much data to load, it may take a while especially over a slow connection (or an overloaded server). It is a good practice to have some progress indicator.
I found a really cool website that can help to build the progress indicator.
Even better, the images are free for use! 
Feel free to post other websites that offer the same feature.