diff --git a/src/game/license_timer/chart.js b/src/game/license_timer/chart.js
index e7a6c93..126014c 100644
--- a/src/game/license_timer/chart.js
+++ b/src/game/license_timer/chart.js
@@ -65,7 +65,6 @@ Chart.drawText = function(posX, posY, text, fontStyle) {
 
 Chart.prototype.printContents = function() {
 	if(isDebugMode()) {
-		console.log("printContents : " + this.records.length);
 		for(var i = 0; i < this.records.length; i++) {
 			this.records[i].printDate("12/10");
 			this.records[i].printScore(360);
diff --git a/src/game/license_timer/timer.js b/src/game/license_timer/timer.js
index 5b2a0f3..1c03966 100644
--- a/src/game/license_timer/timer.js
+++ b/src/game/license_timer/timer.js
@@ -11,9 +11,9 @@ function Timer() {
 	var timerCenterY = 183;
 
 	this.timeHourText = this.makeTimerTextContent(timerCenterX - 240, timerCenterY, 160, "00");
-	this.makeTimerTextContent(timerCenterX - 120, timerCenterY, 160, ":");
+	this.timeHourMinuteSeperator = this.makeTimerTextContent(timerCenterX - 120, timerCenterY, 160, ":");
 	this.timeMinuteText = this.makeTimerTextContent(timerCenterX, timerCenterY, 160, "00");
-	this.makeTimerTextContent(timerCenterX + 110, timerCenterY + 20, 100, ":");
+	this.timeMinuteSecondSeperator = this.makeTimerTextContent(timerCenterX + 110, timerCenterY + 20, 100, ":");
 	this.timeSecondText = this.makeTimerTextContent(timerCenterX + 190, timerCenterY + 20, 100, "00");
 
 	// buttons
@@ -28,34 +28,36 @@ function Timer() {
 
 	// hour button
 	this.hourPlus10Button = this.makeTimePlusButton(hour10PosX, plusPosY, "▲",
-		(function() { this.timePlus(10, "hour"); }).bind(this)
+		(function() { this.timePlus(10, Timer.TYPE_HOUR); }).bind(this)
 	);
 	// this.hourPlus10Button.setInputEnabled(false);
 	this.hourMinus10Button = this.makeTimeMinusButton(hour10PosX, minusPosY, "▼",
-		(function() { this.timeMinus(-10, "hour"); }).bind(this)
+		(function() { this.timeMinus(-10, Timer.TYPE_HOUR); }).bind(this)
 	);
 
 	this.hourPlus1Button = this.makeTimePlusButton(hour1PosX, plusPosY, "▲",
-		(function() { this.timePlus(1, "hour"); }).bind(this)
+		(function() { this.timePlus(1, Timer.TYPE_HOUR); }).bind(this)
 	);
 	this.hourMinus1Button = this.makeTimeMinusButton(hour1PosX, minusPosY, "▼",
-		(function() { this.timeMinus(-1, "hour"); }).bind(this)
+		(function() { this.timeMinus(-1, Timer.TYPE_HOUR); }).bind(this)
 	);
 
 	// minute button
 	this.minutePlus10Button = this.makeTimePlusButton(minute10PosX, plusPosY, "▲",
-		(function() { this.timePlus(10, "minute"); }).bind(this)
+		(function() { this.timePlus(10, Timer.TYPE_MINUTE); }).bind(this)
 	);
 	this.minuteMinus10Button = this.makeTimeMinusButton(minute10PosX, minusPosY, "▼",
-		(function() { this.timeMinus(-10, "minute"); }).bind(this)
+		(function() { this.timeMinus(-10, Timer.TYPE_MINUTE); }).bind(this)
 	);
 
 	this.minutePlus1Button = this.makeTimePlusButton(minute1PosX, plusPosY, "▲",
-		(function() { this.timePlus(1, "minute"); }).bind(this)
+		(function() { this.timePlus(1, Timer.TYPE_MINUTE); }).bind(this)
 	);
 	this.minuteMinus1Button = this.makeTimeMinusButton(minute1PosX, minusPosY, "▼",
-		(function() { this.timeMinus(-1, "minute"); }).bind(this)
+		(function() { this.timeMinus(-1, Timer.TYPE_MINUTE); }).bind(this)
 	);
+
+	this.startTimer();
 }
 
 
@@ -63,14 +65,72 @@ function Timer() {
 Timer.prototype.initVariables = function() {
 	this.prevTime = null;
 
-	this.timeLeft = 0;
-	this.timeLeftHour = 0;
-	this.timeLeftMinute = 0;
-	this.timeLeftSecond = 0;
-
+	this.timeLeft = Timer.TIME_DEFAULT_SEC;
 	this.timerEvent = null;
 }
 
+Timer.prototype.startTimer = function() {
+	this.timeLeft = Timer.TIME_DEFAULT_SEC;
+	this.updateTimeText();
+
+	this.timerEvent = game.time.events.loop(1000, this.tickTimeLeft, this);
+}
+
+Timer.prototype.restartTimer = function() {
+	// this.timeLeft = Timer.TIME_DEFAULT_SEC;
+	// this.updateTimeText();
+
+	this.prevTime = this.getNowTime();
+
+	this.timerEvent = game.time.events.loop(1000, this.tickTimeLeft, this);
+}
+
+Timer.prototype.tickTimeLeft = function() {
+	var outFocusedTime = this.getOutFocusedTime();
+
+	if(outFocusedTime > 2)
+		this.timeLeft -= outFocusedTime - 1;
+
+	this.timeLeft--;
+	this.updateTimeText();
+
+	if(this.timeLeft < 0)
+		this.timeOver();
+}
+
+Timer.prototype.timeOver = function() {
+	console.log("time over");
+	// this.startButton.disable();
+	// this.restartButton.disable();
+	// this.pauseButton.disable();
+
+	// xhr = new XMLHttpRequest();
+	// xhr.open('POST', 'delete_last_timestamp.php', true);
+	// xhr.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
+	// var param = 'UserID=' + playerUserID;
+	// xhr.send(param);
+}
+
+Timer.prototype.getNowTime = function() {
+	var now = new Date();
+	return now.getTime();
+}
+
+
+Timer.prototype.getOutFocusedTime = function() {
+	var nowTime = this.getNowTime();
+
+	var diffTimeSec = 0;
+	if(this.prevTime != null)
+		var diffTimeSec = parseInt((nowTime - this.prevTime) / 1000);
+
+	this.prevTime = nowTime;
+
+	return diffTimeSec;
+}
+
+
+
 Timer.prototype.makeTimerTextContent = function(x, y, sizePx, content) {
 	// style setting
 	var timerTextStyle = { font: "bold 160px Arial", fill: "#fff", align: "right"};
@@ -156,7 +216,7 @@ Timer.prototype.makeTimeButton = function(setting, buttonText, eventHandler) {
 Timer.prototype.timePlus = function(amount, type) {
 	console.log(amount + type);
 
-	// if(type == "hour")
+	// if(type == Timer.TYPE_HOUR)
 	this.timeLeft += amount * 60;
 	this.updateTimeText();
 	this.sendTimeLeftToServer();
@@ -165,7 +225,7 @@ Timer.prototype.timePlus = function(amount, type) {
 Timer.prototype.timeMinus = function(amount, type) {
 	console.log(amount + type);
 
-	// if(type == "hour") {
+	// if(type == Timer.TYPE_HOUR) {
 	// 	var totalMinusMinute = amount * Timer.TIME_MINUTES_FOR_HOUR;
 	// 	if(totalMinusMinute - )
 	// }
@@ -202,13 +262,16 @@ Timer.prototype.timeDown = function(sec) {
 	// this.sendTimeLeftToServer();
 }
 
-Timer.prototype.updateTimeVariables = function() {
-	this.timeLeftHour = parseInt(this.timeLeft / (60 * 60));
-	this.timeLeftMinute = parseInt((this.timeLeft % (60 * 60)) / 60);
-	this.timeLeftSecond = this.timeLeft % 60;
-}
-
 Timer.prototype.updateTimeText = function() {
+	var secondsForHour = Timer.TIME_MINUTES_FOR_HOUR * Timer.TIME_SECONDS_FOR_MINUTE;
+
+	var timeLeftHour = parseInt(this.timeLeft / secondsForHour);
+	var timeLeftMinute = parseInt((this.timeLeft % secondsForHour) / Timer.TIME_SECONDS_FOR_MINUTE);
+	var timeLeftSecond = this.timeLeft % Timer.TIME_SECONDS_FOR_MINUTE;
+
+	this.timeHourText.text = this.getTimeWithTimeFormat(timeLeftHour);
+	this.timeMinuteText.text = this.getTimeWithTimeFormat(timeLeftMinute);
+	this.timeSecondText.text = this.getTimeWithTimeFormat(timeLeftSecond);
 	// this.updateTimeVariables();
 	// this.timerText.text = this.getTimeWithTimeFormat();
 }
@@ -224,15 +287,16 @@ Timer.prototype.getTwoDigitNumber = function(value) {
 		return absValue;
 }
 
-Timer.prototype.getTimeWithTimeFormat = function() {
-	if(this.timeLeft > 0)
-		return this.getTwoDigitNumber(this.timeLeftHour)
-			+ ":" + this.getTwoDigitNumber(this.timeLeftMinute)
-		  	+ ":" + this.getTwoDigitNumber(this.timeLeftSecond);
-	else
-		return "-" + this.getTwoDigitNumber(this.timeLeftHour)
-			+ ":" + this.getTwoDigitNumber(this.timeLeftMinute)
-		  	+ ":" + this.getTwoDigitNumber(this.timeLeftSecond);
+Timer.prototype.getTimeWithTimeFormat = function(timeValue, type) {
+	if(type != Timer.TYPE_HOUR) {
+		return this.getTwoDigitNumber(timeValue);
+	}
+
+	if(this.timeLeft < 0) {
+		return "-" + this.getTwoDigitNumber(timeValue);
+	} else {
+		return this.getTwoDigitNumber(timeValue);
+	}
 }
 
 Timer.prototype.sendTimeLeftToServer = function() {
@@ -258,4 +322,8 @@ Timer.TIME_MINUTES_FOR_HOUR		= 60;
 Timer.TIME_SECONDS_FOR_MINUTE	= 60;
 
 Timer.TIME_DEFAULT_SEC
-	= Timer.TIME_MINUTES_FOR_HOUR * Timer.TIME_SECONDS_FOR_MINUTE;	// 60 min * 60 sec
\ No newline at end of file
+	= Timer.TIME_MINUTES_FOR_HOUR * Timer.TIME_SECONDS_FOR_MINUTE;	// 60 min * 60 sec
+
+Timer.TYPE_HOUR		= "hour";
+Timer.TYPE_MINUTE	= "minute";
+Timer.TYPE_SECOND	= "second";
\ No newline at end of file