说明：  js框架prototype 万一你没有使用过大名鼎鼎的prototype.js，那么让我来告诉你，prototype.js是由Sam Stephenson写的一个javascript类库。这个构思奇妙，而且兼容标准的类库，能帮助你轻松建立有高度互动的web2.0特性的富客户端页面。
(js framework prototype in case you have not used the famous prototype.js, so let me tell you, prototype.js is written by Sam Stephenson, a javascript library. The idea intriguing, but also compatible with the standard class library, can help you easily create highly interactive web2.0 features rich client-side page.)