function AskQuiz()
{
    postData = "do=askQuiz";
    PostRequest("Service/Ask.aspx", postData);
}

function LoginStat()
{
    postData = "do=loginStat";
    PostRequest("Service/Member.aspx", postData);
}

function Logout()
{
    postData = "do=logout";
    PostRequest("Service/Member.aspx", postData);
}

function CheckLogin()
{
    postData = "do=checkLogin";
    PostRequest("Service/Member.aspx", postData);
}