<script type="text/javascript">
$(document).ready(function(){
    setInterval(function(){
        $.post("users/helpers/logoutcheck.php", {loginstatus:$("#loginstatus").text()},
            function(data) {
                //data returns either 0 or the URL to go to, calculated by the PHP page
                if (data != '0') {window.location.replace(data);}
            });
            },5000);
});
</script>