diff --git a/youtube-addiction-control-extension-firefox.js b/youtube-addiction-control-extension-firefox.js
index f4e2df2..e42a28a 100644
--- a/youtube-addiction-control-extension-firefox.js
+++ b/youtube-addiction-control-extension-firefox.js
@@ -6,7 +6,7 @@ Array.from(document.getElementsByClassName(STYLE_CLASS)).forEach((e) => {
     e.remove();
 });
 
-let ytacCSS = {
+window.ytacCSS = {
 	"sidebar": "#related",
 	"comments": "#comments",
 	"endscreen": ".videowall-endscreen",
@@ -15,24 +15,37 @@ let ytacCSS = {
 	"other": "#newness-dot, .ytp-spinner"
 };
 
-const INVISIBLE = " { display: none !important; }"
+const INVISIBLE = " { display: none !important; }";
 
-let head = document.getElementsByTagName('head')[0];
-for (key of Object.keys(ytacCSS)) {
+function addCSS(key) {
+	if (document.getElementById("ytac" + key) !== null) {
+		return;
+	}
+	let head = document.getElementsByTagName('head')[0];
 	let e = document.createElement('style');
 	e.setAttribute('type', 'text/css');
 	e.setAttribute("class", STYLE_CLASS);
 	e.setAttribute("id", "ytac" + key);
 
 	if ('textContent' in e) {
-		e.textContent = ytacCSS[key] + INVISIBLE;
+		e.textContent = window.ytacCSS[key] + INVISIBLE;
 	} else {
-		e.styleSheet.cssText = ytacCSS[key] + INVISIBLE;
+		e.styleSheet.cssText = window.ytacCSS[key] + INVISIBLE;
 	}
 
 	head.appendChild(e);
 }
 
+function addClickListeners(key) {
+	for (el of document.querySelectorAll(window.ytacCSS[key])) {
+		el.addEventListener("click", (e) => addCSS(key));
+	}
+}
+
+for (key of Object.keys(window.ytacCSS)) {
+	addCSS(key);
+}
+
 // browser action listener
   
 // Listen for messages from the background script.
@@ -47,6 +60,7 @@ window.ytacListener = (message) => {
   	} else if (message.command == "sidebar") {
 		console.log("[YTAC] showing video sidebar");
 		document.getElementById("ytacsidebar").remove();
+		addClickListeners("sidebar");
 	} else if (message.command == "invideo") {
 		console.log("[YTAC] showing in-video suggestions");
 		document.getElementById("ytacinvideo").remove();