HTML5 Flies is a sample of canvas-animation drawing. Script uses excanvas for compatibility with Internet Explorer
excanvas is licensed under the Apache License, Version 2.0. You will look at excanvas-modified.js file for detail
This script and the associated files are non commercial work. It should not have unexpected results. However if any damage is caused by this software the author can not be responsible. The use of this software is at the risk of the user.