function timer() {
		setInterval(function () {
			var hoursLeft = document.getElementById('timer-v-hours'),
				minutesLeft = document.getElementById('timer-v-minutes'),
				secLeft = document.getElementById('timer-v-seconds'),
				dateNow = new Date().getTime(),
				dateFinish = new Date(2018, 06, 17),
				sec = Math.floor((dateFinish - dateNow) / 1000),
				secToMinutes = sec % 3600,
				hoursNumber = Math.floor(sec / 3600),
				minutesNumber = Math.floor(secToMinutes / 60),
				secondsNumber = secToMinutes % 60;
			hoursLeft.innerHTML = hoursNumber;
			minutesLeft.innerHTML = minutesNumber;
			secLeft.innerHTML = secondsNumber;
		});
	}

	timer();