MooTools是一个简洁，模块化，面向对象的JavaScript框架。它能够帮助你更快，更简单地编写可扩展和兼容性强的JavaScript代码。
Mootools从Prototype.js中汲取了许多有益的设计理念，语法也和其极其类似。但它提供的功能要比Prototype.js多，整体设计也比Prototype.js要相对完善，功能更强大，比如增加了动画特效、拖放操作等等。
总之，Mootools是一个非常优秀的Javascript框架，更多精髓部分等待你去发掘，希望你也能通过学习和使用而喜欢上Mootools，甚至
喜欢上Javascript :)
详情参考 ：
http://hi.baidu.com/ssfnadn/blog/item/abc4d1385fcf9a2b97ddd801.html
http://mootools.net/docs/core
MooTools is a compact, modular, Object-Oriented JavaScript framework designed for the intermediate to advanced JavaScript developer. It allows you to write powerful, flexible, and cross-browser code with its elegant, well documented, and coherent API.
MooTools code respects strict standards and doesn't throw any warnings. It's well commented and has meaningful variable names: a joy to browse and a snap to understand.