Timer, pri resetu se predbiha cas

<li><a onClick="createTimer('5');">5 min</a></li>
            <li><a onClick="createTimer('15');">15 min</a></li>

function createTimer(time)
{
    
    var minutes = time * 60;
    javascript_countdown.init(minutes, 'timerCanvas');
}

var javascript_countdown = function () {
    var time_left = 10; //number of seconds for countdown
    var output_element_id = 'javascript_countdown_time';
    var keep_counting = 1;
    var no_time_left_message = 'No time left for JavaScript countdown!';
 
    function countdown() {
        if(time_left < 2) {
            keep_counting = 0;
        }
 
        time_left = time_left - 1;
    }
 
    function add_leading_zero(n) {
        if(n.toString().length < 2) {
            return '0' + n;
        } else {
            return n;
        }
    }
 
    function format_output() {
        var hours, minutes, seconds;
        seconds = time_left % 60;
        minutes = Math.floor(time_left / 60) % 60;
        hours = Math.floor(time_left / 3600);
 
        seconds = add_leading_zero( seconds );
        minutes = add_leading_zero( minutes );
        hours = add_leading_zero( hours );
 
        return hours + ':' + minutes + ':' + seconds;
    }
 
    function show_time_left() {
        document.getElementById(output_element_id).innerHTML = format_output();//time_left;
    }
 
    function no_time_left() {
        document.getElementById(output_element_id).innerHTML = no_time_left_message;
        
        alert('dssdsd');
    }
 
    return {
        count: function () {
            countdown();
            show_time_left();
        },
        timer: function () {
            javascript_countdown.count();
 
            if(keep_counting) {
                setTimeout("javascript_countdown.timer();", 1000);
            } else {
                no_time_left();
            }
        },
        
        setTimeLeft: function (t) {
            time_left = t;
            if(keep_counting == 0) {
                javascript_countdown.timer();
            }
        },
        init: function (t, element_id) {
            time_left = t;
            output_element_id = element_id;
            javascript_countdown.timer();
        }
    };
}();