const myTimeout = setTimeout(kill_session,900000);
function kill_session() {
    if (window.XMLHttpRequest)
        {// code for IE7+, Firefox, Chrome, Opera, Safari
        xmlhttp=new XMLHttpRequest();
    }
    else
        {// code for IE6, IE5
            xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");
        }
  	location.reload();
    xmlhttp.open("GET","model/logout.php",false);
    xmlhttp.send();

    // document.getElementById("id_of_a_hidden_div").innerHTML=xmlhttp.responseText; 
}
                                        function time_loader() {
                                        setInterval(function() {
                                            var date = new Date();
                                            var day = ("0" + (date.getDate())).slice(-2);
                                            var mon = ("0" + (date.getMonth() + 1)).slice(-2);
                                            var year = date.getFullYear();
                                            var hours = ("0" + (date.getHours())).slice(-2);
                                            var minute = ("0" + (date.getMinutes())).slice(-2);
                                            var seconds = ("0" + (date.getSeconds())).slice(-2);

                                            if (hours == 0 && minute == 0 && seconds == 0) {
                                                localStorage.clear();
                                                localStorage.clickcount = 0;
                                            	location.reload();


                                            }

                                            var num = Number(localStorage.clickcount)+1;

                                            document.getElementById("codepasien").value = year+''+mon + '' +day+ '' + num;
                                        }, 1000);
                                    }