diff --git a/src/httpserver/script.js b/src/httpserver/script.js
index bc1d32ea7..b99cab678 100644
--- a/src/httpserver/script.js
+++ b/src/httpserver/script.js
@@ -1,8 +1,8 @@
 //The content of this file get set into htmlHeadStyle (new_http.cs)
 
 var firstTime,
-    lastTime,
-    req = null;
+	lastTime,
+	req = null;
 var onlineFor;
 var onlineForEl = null;
 
@@ -10,73 +10,79 @@ var getElement = (id) => document.getElementById(id);
 
 // refresh status section every 3 seconds
 function showState() {
-    clearTimeout(firstTime);
-    clearTimeout(lastTime);
-    if (req != null) {
-        req.abort();
-    }
-    req = new XMLHttpRequest();
-    req.onreadystatechange = () => {
-        if (req.readyState == 4 && req.status == 200) {
-            if (
-                !(
-                    document.activeElement.tagName == "INPUT" &&
-                    (document.activeElement.type == "number" || document.activeElement.type == "color")
-                )
-            ) {
-                getElement("state").innerHTML = req.responseText;
-            }
-            clearTimeout(firstTime);
-            clearTimeout(lastTime);
-            lastTime = setTimeout(showState, 3e3);
-        }
-    };
-    req.open("GET", "index?state=1", true);
-    req.send();
-    firstTime = setTimeout(showState, 3e3);
+	clearTimeout(firstTime);
+	clearTimeout(lastTime);
+	if (req != null) {
+		req.abort();
+	}
+	req = new XMLHttpRequest();
+	req.onreadystatechange = () => {
+		if (req.readyState == 4 && req.status == 200) {
+			if (
+				!(
+					document.activeElement.tagName == "INPUT" &&
+					(document.activeElement.type == "number" || document.activeElement.type == "color")
+				)
+			) {
+				var stateEl = getElement("state");
+				if (stateEl) {
+					stateEl.innerHTML = req.responseText;
+				}
+			}
+			clearTimeout(firstTime);
+			clearTimeout(lastTime);
+			lastTime = setTimeout(showState, 3e3);
+		}
+	};
+	req.open("GET", "index?state=1", true);
+	req.send();
+	firstTime = setTimeout(showState, 3e3);
 }
 
 function fmtUpTime(totalSeconds) {
-    var days, hours, minutes, seconds;
+	var days, hours, minutes, seconds;
 
-    days = Math.floor(totalSeconds / (24 * 60 * 60));
-    totalSeconds = totalSeconds % (24 * 60 * 60);
-    hours = Math.floor(totalSeconds / (60 * 60));
-    totalSeconds = totalSeconds % (60 * 60);
-    minutes = Math.floor(totalSeconds / 60);
-    seconds = totalSeconds % 60;
+	days = Math.floor(totalSeconds / (24 * 60 * 60));
+	totalSeconds = totalSeconds % (24 * 60 * 60);
+	hours = Math.floor(totalSeconds / (60 * 60));
+	totalSeconds = totalSeconds % (60 * 60);
+	minutes = Math.floor(totalSeconds / 60);
+	seconds = totalSeconds % 60;
 
-    if (days > 0) {
-        return `${days} days, ${hours} hours, ${minutes} minutes and ${seconds} seconds`;
-    }
-    if (hours > 0) {
-        return `${hours} hours, ${minutes} minutes and ${seconds} seconds`;
-    }
-    if (minutes > 0) {
-        return `${minutes} minutes and ${seconds} seconds`;
-    }
-    return `just ${seconds} seconds`;
+	if (days > 0) {
+		return `${days} days, ${hours} hours, ${minutes} minutes and ${seconds} seconds`;
+	}
+	if (hours > 0) {
+		return `${hours} hours, ${minutes} minutes and ${seconds} seconds`;
+	}
+	if (minutes > 0) {
+		return `${minutes} minutes and ${seconds} seconds`;
+	}
+	return `just ${seconds} seconds`;
 }
 
 function updateOnlineFor() {
-    onlineForEl.textContent = fmtUpTime(++onlineFor);
+	onlineForEl.textContent = fmtUpTime(++onlineFor);
 }
 
 function onLoad() {
-    onlineForEl = getElement("onlineFor");
-    if (onlineForEl) {
-        onlineFor = parseInt(onlineForEl.dataset.initial, 10); //We have some valid value
-        if (onlineFor) {
-            setInterval(updateOnlineFor, 1000);
-        }
-    }
+	onlineForEl = getElement("onlineFor");
+	if (onlineForEl) {
+		onlineFor = parseInt(onlineForEl.dataset.initial, 10); //We have some valid value
+		if (onlineFor) {
+			setInterval(updateOnlineFor, 1000);
+		}
+	}
 
-    showState();
+	showState();
 }
 
 window.addEventListener("load", onLoad);
 history.pushState(null, "", "index"); // drop actions like 'toggle' from URL
 
 setTimeout(() => {
-    getElement("changed").innerHTML = "";
+	var changedEl = getElement("changed");
+	if (changedEl) {
+		changedEl.innerHTML = "";
+	}
 }, 5e3); // hide change info