$(function() {
    var loginForm = $('#login-form');

    loginForm.submit(function() {
        $.ajax({
            type: 'post',
            url: loginForm.attr('action'),
            data: {
                id: loginForm.find('#id').val(),
                password: loginForm.find('#password').val(),
                returnUrl: loginForm.find('#returnUrl').val()
            },
            success: function(nextUrl) {
                window.location = nextUrl;
            },
            error: function() {
                alert('Check Member ID and password');
            }
        });

        return false; // we've handled the post, so cancel form post.
    });

    $('#id').focus();
});