客户用鼠标单击“加入会员”的按钮时，页面会自动跳转至留言板注册系统页面；填完必要的会员信息后单击“注册”的按钮，应用程序会自动将信息记录入数据库的同时再次转到登陆页面，这是用户已是注册用户，可以登录留言板-Customers use the mouse to click the " add member"　button, the page will automatically jump to the page message board registration system　Members fill out the necessary information and click " Register"　button, the application will automatically record information into the database At the same time once again to the landing page, which users are already registered user, you can sign message board