1 files changed, 12 insertions, 2 deletions
diff --git a/src/background/index.js b/src/background/index.js
index d4e0098..793f330 100644
--- a/src/background/index.js
+++ b/src/background/index.js
@@ -2,10 +2,14 @@ import * as tabs from './tabs';
 
 const KEY_MAP = {
   'tabs.prev': 104,
-  'tabs.next': 108
+  'tabs.next': 108,
+  'scroll.up': 107,
+  'scroll.down': 106
 };
 
 browser.runtime.onMessage.addListener((request, sender, sendResponse) => {
+  let response = null;
+
   switch (request.key) {
   case KEY_MAP['tabs.prev']:
     tabs.selectPrevTab(sender.tab.index);
@@ -13,6 +17,12 @@ browser.runtime.onMessage.addListener((request, sender, sendResponse) => {
   case KEY_MAP['tabs.next']:
     tabs.selectNextTab(sender.tab.index);
     break;
+  case KEY_MAP['scroll.up']:
+    response = 'scroll.up'
+    break;
+  case KEY_MAP['scroll.down']:
+    response = 'scroll.down'
+    break;
   }
-  sendResponse();
+  sendResponse(response);
 });