/// <reference path="jquery-1.4.1.js" />
window.setInterval(
    function () {
        $.post(
            '/Services/KeepAliveController.ashx',
            {},
            function (response) {
                // No need to do anything, but the response
                // has a property called HasDriveWorksSession
                // which could be used to act on
            },
            'json');
    },
    2000
);