diff --git a/4chan_x.user.js b/4chan_x.user.js
index 982378fd6..8230a1b2a 100644
--- a/4chan_x.user.js
+++ b/4chan_x.user.js
@@ -867,22 +867,69 @@
       return e.preventDefault();
     },
     keyCode: function(e) {
-      var kc;
-      kc = e.keyCode;
-      if ((65 <= kc && kc <= 90)) {
-        key = String.fromCharCode(kc);
-        if (!e.shiftKey) {
-          key = key.toLowerCase();
+      var c, kc;
+      key = (function() {
+        switch (kc = e.keyCode) {
+          case 8:
+            return '';
+          case 27:
+            return 'Esc';
+          case 37:
+            return 'Left';
+          case 38:
+            return 'Up';
+          case 39:
+            return 'Right';
+          case 40:
+            return 'Down';
+          case 48:
+          case 49:
+          case 50:
+          case 51:
+          case 52:
+          case 53:
+          case 54:
+          case 55:
+          case 56:
+          case 57:
+            return String.fromCharCode(kc);
+          case 65:
+          case 66:
+          case 67:
+          case 68:
+          case 69:
+          case 70:
+          case 71:
+          case 72:
+          case 73:
+          case 74:
+          case 75:
+          case 76:
+          case 77:
+          case 78:
+          case 79:
+          case 80:
+          case 81:
+          case 82:
+          case 83:
+          case 84:
+          case 85:
+          case 86:
+          case 87:
+          case 88:
+          case 89:
+          case 90:
+            c = String.fromCharCode(kc);
+            if (e.shiftKey) {
+              return c;
+            } else {
+              return c.toLowerCase();
+            }
+            break;
+          default:
+            return null;
         }
-      } else if ((48 <= kc && kc <= 57)) {
-        key = String.fromCharCode(kc);
-      } else if (kc === 27) {
-        key = 'Esc';
-      } else if (kc === 8) {
-        key = '';
-      } else {
-        key = null;
-      }
+      })();
       if (key) {
         if (e.altKey) {
           key = 'alt+' + key;
diff --git a/changelog b/changelog
index 95095e226..541894964 100644
--- a/changelog
+++ b/changelog
@@ -1,6 +1,7 @@
 master
 - mayhem
   quote inlining default styling (by xat)
+  add up/down/right/left keybinding support
 
 2.19.2
 - mayhem
diff --git a/script.coffee b/script.coffee
index 72c5326ef..b0551be8b 100644
--- a/script.coffee
+++ b/script.coffee
@@ -619,19 +619,26 @@ keybinds =
     e.preventDefault()
 
   keyCode: (e) ->
-    kc = e.keyCode
-    if 65 <= kc <= 90 #A-Z
-      key = String.fromCharCode kc
-      if !e.shiftKey
-        key = key.toLowerCase()
-    else if 48 <= kc <= 57 #0-9
-      key = String.fromCharCode kc
-    else if kc is 27
-      key = 'Esc'
-    else if kc is 8
-      key = ''
-    else
-      key = null
+    key = switch kc = e.keyCode
+      when 8
+        ''
+      when 27
+        'Esc'
+      when 37
+        'Left'
+      when 38
+        'Up'
+      when 39
+        'Right'
+      when 40
+        'Down'
+      when 48, 49, 50, 51, 52, 53, 54, 55, 56, 57 #0-9
+        String.fromCharCode kc
+      when 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90 #A-Z
+        c = String.fromCharCode kc
+        if e.shiftKey then c else c.toLowerCase()
+      else
+        null
     if key
       if e.altKey  then key = 'alt+' + key
       if e.ctrlKey then key = 'ctrl+' + key