spin.js

An animated CSS3 loading spinner with VML fallback for IE.

No images, no external CSS
No dependencies
Highly configurable
Resolution independent
Uses VML as fallback in old IEs
Uses @keyframe animations, falling back to setTimeout()
Works in all major browsers, including IE6
Small footprint (~1.9K gzipped)
MIT License

Usage

new Spinner({color:'#fff', lines: 12}).spin(target);

For an interactive demo and a list of all supported options please refer to the project's homepage.