function CheckForm()
        {
                if(document.login.username.value=="")
                {
                        alert("請輸入登入名！");
                        document.login.username.focus();
                        return false;
                }
                if(document.login.password.value == "")
                {
                        alert("請輸入密碼！");
                        document.login.password.focus();
                        return false;
                }
        }
        function regBBS()
        {
                window.open("forum/register.php");
        }