diff --git a/eslint/eslintrc.json b/eslint/eslintrc.json
index 76a0ec4..5fd6db2 100644
--- a/eslint/eslintrc.json
+++ b/eslint/eslintrc.json
@@ -29,6 +29,8 @@
         "brace-style": ["warn", "allman", {"allowSingleLine": true}],
         "function-call-argument-newline" : ["warn", "consistent"],
         "function-paren-newline": ["warn", "consistent"],
-        "no-magic-numbers": ["error", {"ignore": [0,1,2,100]}]
+        "no-magic-numbers": ["error", {"ignore": [0,1,2,100]}],
+        "quote-props": ["warn", "as-needed"],
+        "no-unused-vars": ["error", {"argsIgnorePattern": "^_"}]
     }
 }
diff --git a/melpomene.js b/melpomene.js
index 266623f..8689592 100644
--- a/melpomene.js
+++ b/melpomene.js
@@ -135,26 +135,6 @@ function getFirstZoomOfPage(pageNumber)
     }
 }
 
-function getLastZoomOfPage(pageNumber)
-{
-    let res = null;
-
-    for (let zoomIdx = 0; zoomIdx < PAGES_ZOOMS.length; zoomIdx += 1)
-    {
-        if (PAGES_ZOOMS[zoomIdx][0] === pageNumber)
-        {
-            res = zoomIdx;
-        }
-
-        if (res !== null && PAGES_ZOOMS[zoomIdx][0] !== pageNumber)
-        {
-            break;
-        }
-    }
-
-    return res;
-}
-
 function getZoomCountForPage(pageNumber)
 {
     return PAGES_ZOOMS.filter(zoom => zoom[0] === pageNumber).length;
@@ -210,11 +190,6 @@ function readerFrameRatio()
     return READER_CONTENT_FRAME.clientWidth / READER_CONTENT_FRAME.clientHeight;
 }
 
-function pageRatio(pageNumber)
-{
-    return READER_PAGES.children[pageNumber - 1].naturalWidth / READER_PAGES.children[pageNumber - 1].naturalHeight;
-}
-
 function pageMaxHeight()
 {
     let maxHeight = 0;
@@ -262,7 +237,7 @@ function initReader()
 
     // Smoothly show pictures when they intersect with the viewport
     const visibilityObserver = new IntersectionObserver(
-        (entries, observer) =>
+        (entries, _observer) =>
         {
             entries.forEach((entry) =>
             {
@@ -593,24 +568,24 @@ function handleMouseWhell(event)
 
 window.addEventListener(
     "load",
-    (event) => { initReader() }
+    (_event) => { initReader(); }
 );
 
 addEventListener(
     "resize",
-    (event) => { refreshReaderDisplay() }
+    (_event) => { refreshReaderDisplay(); }
 );
 
 addEventListener(
     "keydown",
     (event) =>
     {
-        handleKeyPress(event.key, event.shiftKey)
+        handleKeyPress(event.key, event.shiftKey);
     }
 );
 
 addEventListener(
     "wheel",
-    (event) => { handleMouseWhell(event) },
-    { passive:false }
+    (event) => { handleMouseWhell(event); },
+    { passive: false }
 );