diff --git a/readability/data/Toolbar.js b/readability/data/Toolbar.js
index c3965c7..f56810b 100644
--- a/readability/data/Toolbar.js
+++ b/readability/data/Toolbar.js
@@ -34,16 +34,16 @@ function addListeners(){
     document.getElementById('style-button').addEventListener("click", toolbarService);
 
     var lightButton = document.getElementById('light-button');
-    lightButton.addEventListener("click", function(){switchToLight(lightButton);});
+    lightButton.addEventListener("click", function(){switchToLight();});
     var sepiaButton = document.getElementById('sepia-button');
-    sepiaButton.addEventListener("click", function(){switchToSepia(sepiaButton);});
+    sepiaButton.addEventListener("click", function(){switchToSepia();});
     var darkButton = document.getElementById('dark-button');
-    darkButton.addEventListener("click", function(){switchToDark(darkButton);});
+    darkButton.addEventListener("click", function(){switchToDark();});
 
     var serifButton = document.getElementById('serif-button');
-    serifButton.addEventListener("click", function(){switchToSerif(serifButton);});
+    serifButton.addEventListener("click", function(){switchToSerif();});
     var sansSerifButton = document.getElementById('sans-serif-button');
-    sansSerifButton.addEventListener("click", function(){switchToSansSerif(sansSerifButton);});
+    sansSerifButton.addEventListener("click", function(){switchToSansSerif();});
 
     var fontSizePlusButton = document.getElementById('font-size-plus');
     fontSizePlusButton.addEventListener("click", fontSizePlus);
@@ -62,11 +62,10 @@ function toolbarService(){
         element.classList.remove('open');
     } else {
         element.classList.add('open');
-
     }
 }
 
-function switchToLight(item){
+function switchToLight(){
     document.body.classList.remove('sepia', 'dark');
     document.body.classList.add('light');
 
@@ -74,10 +73,10 @@ function switchToLight(item){
     for (var j = items.length - 1; j >= 0; j--) {
         items[j].classList.remove("selected");
     }
-    item.classList.add('selected');
+    document.getElementById('light-button').classList.add('selected');
 }
 
-function switchToSepia(item){
+function switchToSepia(){
     document.body.classList.remove('light', 'dark');
     document.body.classList.add('sepia');
 
@@ -85,10 +84,10 @@ function switchToSepia(item){
     for (var j = items.length - 1; j >= 0; j--) {
         items[j].classList.remove("selected");
     }
-    item.classList.add('selected');
+    document.getElementById('sepia-button').classList.add('selected');
 }
 
-function switchToDark(item){
+function switchToDark(){
     document.body.classList.remove('sepia', 'light');
     document.body.classList.add('dark');
 
@@ -96,21 +95,21 @@ function switchToDark(item){
     for (var j = items.length - 1; j >= 0; j--) {
         items[j].classList.remove("selected");
     }
-    item.classList.add('selected');
+    document.getElementById('dark-button').classList.add('selected');
 }
 
-function switchToSerif(item){
+function switchToSerif(){
     document.body.classList.remove('sans-serif');
     document.body.classList.add('serif');
     document.getElementById('sans-serif-button').classList.remove('selected');
-    item.classList.add('selected');
+    document.getElementById('serif-button').classList.add('selected');
 }
 
-function switchToSansSerif(item){
+function switchToSansSerif(){
     document.body.classList.remove('serif');
     document.body.classList.add('sans-serif');
     document.getElementById('serif-button').classList.remove('selected');
-    item.classList.add('selected');
+    document.getElementById('sans-serif-button').classList.add('selected');
 }
 
 function fontSizePlus(){
@@ -143,4 +142,4 @@ function fontSizeMinus(){
             return;
         }
     }
-}
\ No newline at end of file
+}