登陆代码包括登陆界面源代码、用户名和密码的检查、登陆成功后的转跳和登陆失败后的转跳；为了提高代码的执行速度有部分的HTML代码-The login code, including a login interface source code, user name and password check, turn jump after the successful landing and landing after a failed transfer jump a part of the HTML