let time_adjust = 0.25;

    function displayTimer() {
        $("#panel").hide();
        $("#timer").show();
        document.getElementById("timer").style.display = "block";
       }
    setTimeout(displayTimer, 1000*60*time_adjust);  //displays the timer after 40 seconds


    var time_left = 60*1.5; //total time in seconds
    var cinterval;

    function time_dec(){
        time_left--;
        document.getElementById('time-left').innerHTML = time_left;
        if(time_left == 0){
            clearInterval(cinterval);
            document.getElementById('is_dropout').value = 1;

        }
    }
    cinterval = setInterval('time_dec()', 1000);

    function resetTimer(){
        time_left = 60*1.5;
        document.getElementById("timer").style.display = "none";
        $("#panel").show();
        setTimeout(displayTimer, 1000*60*time_adjust);
    }

    document.addEventListener('mousemove', resetTimer);
    document.addEventListener('click', resetTimer);