diff --git a/webmusic.js b/webmusic.js
index 3da097c..ba6bff6 100644
--- a/webmusic.js
+++ b/webmusic.js
@@ -3,16 +3,16 @@
 const audioPlayer  = new Audio();
 let   selectedItem = 0;
 let   playingItem  = 0;
-let   playerState  = "idle";
+let   playerState  = 'idle';
 let   continuous   = true;
 let   repeat       = false;
 let   total        = 0;
 
 const handleKeyEvent = (event) => {
 	switch (event.key) {
-		case " ":
-		case "p":
-			if (playerState == "idle" && total !== 0) {
+		case ' ':
+		case 'p':
+			if (playerState == 'idle' && total !== 0) {
 				if (document.getElementById(playingItem).classList.contains('dir')) {
 					return nextTrack();
 				}
@@ -23,23 +23,23 @@ const handleKeyEvent = (event) => {
 			}
 			break;
 
-		case "r":
+		case 'r':
 			toggleRepeat();
 			break;
 
-		case "c":
+		case 'c':
 			toggleContinue();
 			break;
 
-		case "ArrowUp":
+		case 'ArrowUp':
 			selectPreviousItem();
 			break;
 
-		case "ArrowDown":
+		case 'ArrowDown':
 			selectNextItem();
 			break;
 
-		case "ArrowLeft":
+		case 'ArrowLeft':
 			if (audioPlayer.currentTime < 10) {
 				audioPlayer.currentTime = 0;
 			} else {
@@ -47,51 +47,51 @@ const handleKeyEvent = (event) => {
 			}
 			break;
 
-		case "ArrowRight":
+		case 'ArrowRight':
 			audioPlayer.currentTime = audioPlayer.currentTime+10;
 			break;
 
-		case "Enter":
+		case 'Enter':
 			document.getElementById(selectedItem).click()
 			break;
 
-		case "Escape":
-			document.getElementById("back").click();
+		case 'Escape':
+			document.getElementById('back').click();
 			break;
 	}
 };
 
 const initState = () => {
-	const dirElements  = document.querySelectorAll(".dir");
-	const fileElements = document.querySelectorAll(".file");
+	const dirElements  = document.querySelectorAll('.dir');
+	const fileElements = document.querySelectorAll('.file');
 	let   id           = 0;
 
-	document.getElementById("state").addEventListener("click", togglePlayback)
-	document.getElementById("repeatButton").addEventListener("click", toggleRepeat)
-	document.getElementById("continuousButton").addEventListener("click", toggleContinue)
+	document.getElementById('state').addEventListener('click', togglePlayback)
+	document.getElementById('repeatButton').addEventListener('click', toggleRepeat)
+	document.getElementById('continuousButton').addEventListener('click', toggleContinue)
 
-	audioPlayer.addEventListener("canplay", () => {
+	audioPlayer.addEventListener('canplay', () => {
 		audioPlayer.play();
 	});
 
-	audioPlayer.addEventListener("play", () => {
-		setPlayerState("playing");
+	audioPlayer.addEventListener('play', () => {
+		setPlayerState('playing');
 	});
 
-	audioPlayer.addEventListener("pause", () => {
-		setPlayerState("paused");
+	audioPlayer.addEventListener('pause', () => {
+		setPlayerState('paused');
 	});
 
-	audioPlayer.addEventListener("error", () => {
-		setPlayerState("error loading track");
+	audioPlayer.addEventListener('error', () => {
+		setPlayerState('error loading track');
 	});
 
-	audioPlayer.addEventListener("ended", () => {
-		setPlayerState("idle");
+	audioPlayer.addEventListener('ended', () => {
+		setPlayerState('idle');
 		nextTrack();
 	});
 
-	audioPlayer.addEventListener("timeupdate", () => {
+	audioPlayer.addEventListener('timeupdate', () => {
 		updatePlayerState();
 	});
 
@@ -102,7 +102,7 @@ const initState = () => {
 	fileElements.forEach((element) => {
 		element.id = id++;
 
-		element.addEventListener("click", (event) => {
+		element.addEventListener('click', (event) => {
 			event.preventDefault();
 			event.stopPropagation();
 			playSong(event.target.id);
@@ -117,19 +117,19 @@ const initState = () => {
 const setPlayerState = (state) => {
 	playerState = state;
 
-	console.log("now in state: " + state);
+	console.log('now in state: ' + state);
 	updatePlayerState();
 }
 
 const updatePlayerState = () => {
-	let statestr = "[" + playerState;
+	let statestr = '[' + playerState;
 
 	if (!audioPlayer.paused) {
-		statestr += " " + formatTime(audioPlayer.currentTime) + "/" + formatTime(audioPlayer.duration);
+		statestr += ' ' + formatTime(audioPlayer.currentTime) + '/' + formatTime(audioPlayer.duration);
 	}
 
-	statestr += "]";
-	document.getElementById("state").innerHTML = statestr;
+	statestr += ']';
+	document.getElementById('state').innerHTML = statestr;
 }
 
 const updateButtonState = () => {
@@ -153,8 +153,8 @@ const playSong = (id) => {
 	if (element === null) return;
 	if (element.classList.contains('dir')) return;
 
-	if (document.getElementsByClassName("playing").length > 0) {
-		document.getElementsByClassName("playing")[0].classList.remove("playing");
+	if (document.getElementsByClassName('playing').length > 0) {
+		document.getElementsByClassName('playing')[0].classList.remove('playing');
 	}
 
 	playingItem = element.id;
@@ -163,10 +163,10 @@ const playSong = (id) => {
 
 	audioPlayer.src = element.href;
 
-	setPlayerState("loading");
+	setPlayerState('loading');
 	audioPlayer.load();
 	
-	element.classList.add("playing");
+	element.classList.add('playing');
 }
 
 const togglePlayback = () => {
@@ -222,8 +222,8 @@ const selectNextItem = () => {
 }
 
 const updateSelectedItem = () => {
-	if (document.getElementsByClassName("selected").length > 0) {
-		document.getElementsByClassName("selected")[0].classList.remove("selected");
+	if (document.getElementsByClassName('selected').length > 0) {
+		document.getElementsByClassName('selected')[0].classList.remove('selected');
 	}
 
 	document.getElementById(selectedItem).classList.add('selected');