http://www.vgn.de/ib/core/libraries_ext/spin.js
http://aspnetboilerplate.com/Scripts/others/spinjs/spin.js
https://aspnetzero.com/libs/spinjs/spin.js?v=635917458920000000
http://sentios-sentinel.azurewebsites.net/Scripts/others/spinjs/spin.js?v=635943267183883626
http://shoutry.com/js/spin.js