function member_login(){
    var url = '/member/login.php';
    var data = $('#MemberLoginForm').serialize();
    $.post(url,data,function(data_cb){
        if(data_cb=='success'){
            flush_header();
            close_login();
        }
        else{
            $('div.popping').html(data_cb);
        }
    });
}
function logout(){
    var url = '/member/logout.php';
    $.post(url,null,function(data_cb){
        $('div.login').html(data_cb);
    });
}
function show_login(){
    $('div.popping').show('drop');
}
function close_login(){
    $('div.popping').hide('drop');
}
function flush_header(){
    var url='/ssi/header.php';
    $.get(url,null,function(data_cb){
        $('div.header').html(data_cb);
    });
}
function site_change(){
    window.location='http://www.leeweisong.com';
}