JQuery学习实例，它优点：快速、简洁，能够很轻易地处理HTML文档、控制事件、给页面添加动画和Ajax效果-JQuery learning instance, it Advantages: Fast, simple, and can easily deal with HTML documents, control events, to the page to add animation and Ajax effects

自动引藏控件， ( html 中的Div 可以象门一样打开或关闭) (一般网站加上这个控件就会给人于智能网站的感觉，就象美化的桌面软件一样，流连忘返。)-this Control is writed by Javascr ipt, it let [the DIV in Html] auto disappear or show, just look like a door Opening or Closeing