diff --git a/src/actions/index.js b/src/actions/index.js
index ae29238..754b7f0 100644
--- a/src/actions/index.js
+++ b/src/actions/index.js
@@ -12,15 +12,6 @@ export default {
   CMD_OPEN: 'cmd.open',
   CMD_TABS_OPEN: 'cmd.tabs.open',
   CMD_BUFFER: 'cmd.buffer',
-  SCROLL_LINES: 'scroll.lines',
-  SCROLL_PAGES: 'scroll.pages',
-  SCROLL_TOP: 'scroll.top',
-  SCROLL_BOTTOM: 'scroll.bottom',
-  SCROLL_LEFT: 'scroll.left',
-  SCROLL_RIGHT: 'scroll.right',
-  FOLLOW_START: 'follow.start',
-  HISTORY_PREV: 'history.prev',
-  HISTORY_NEXT: 'history.next',
 
   // User input
   INPUT_KEY_PRESS: 'input.key,press',
diff --git a/src/actions/operation.js b/src/actions/operation.js
index 4106076..352bfac 100644
--- a/src/actions/operation.js
+++ b/src/actions/operation.js
@@ -21,7 +21,10 @@ export function exec(operation, sender) {
   case operations.ZOOM_NEUTRAL:
     return zooms.neutral();
   default:
-    return Promise.resolve();
+    return browser.tabs.sendMessage(sender.tab.id, {
+      type: 'require.content.operation',
+      operation
+    });
   }
 }
 
diff --git a/src/background/index.js b/src/background/index.js
index ab99d39..0c3adce 100644
--- a/src/background/index.js
+++ b/src/background/index.js
@@ -6,7 +6,7 @@ import commandReducer from '../reducers/command';
 import inputReducers from '../reducers/input';
 import * as store from '../store'
 
-const emptyReducer = (state, action) => state;
+const emptyReducer = (state) => state;
 const emptyStore = store.createStore(emptyReducer, (e) => {
   console.error('Vim-Vixen:', e);
 });
diff --git a/src/background/keys.js b/src/background/keys.js
index 72b333a..0f73bf0 100644
--- a/src/background/keys.js
+++ b/src/background/keys.js
@@ -6,18 +6,18 @@ const defaultKeymap = {
   'o': { type: actions.CMD_TABS_OPEN, alter: false },
   'O': { type: actions.CMD_TABS_OPEN, alter: true },
   'b': { type: actions.CMD_BUFFER },
-  'k': { type: actions.SCROLL_LINES, count: -1 },
-  'j': { type: actions.SCROLL_LINES, count: 1 },
-  '<C-E>': { type: actions.SCROLL_LINES, count: -1 },
-  '<C-Y>': { type: actions.SCROLL_LINES, count: 1 },
-  '<C-U>': { type: actions.SCROLL_PAGES, count: -0.5 },
-  '<C-D>': { type: actions.SCROLL_PAGES, count: 0.5 },
-  '<C-B>': { type: actions.SCROLL_PAGES, count: -1 },
-  '<C-F>': { type: actions.SCROLL_PAGES, count: 1 },
-  'gg': { type: actions.SCROLL_TOP },
-  'G': { type: actions.SCROLL_BOTTOM },
-  '0': { type: actions.SCROLL_LEFT },
-  '$': { type: actions.SCROLL_RIGHT },
+  'k': { type: operations.SCROLL_LINES, count: -1 },
+  'j': { type: operations.SCROLL_LINES, count: 1 },
+  '<C-E>': { type: operations.SCROLL_LINES, count: -1 },
+  '<C-Y>': { type: operations.SCROLL_LINES, count: 1 },
+  '<C-U>': { type: operations.SCROLL_PAGES, count: -0.5 },
+  '<C-D>': { type: operations.SCROLL_PAGES, count: 0.5 },
+  '<C-B>': { type: operations.SCROLL_PAGES, count: -1 },
+  '<C-F>': { type: operations.SCROLL_PAGES, count: 1 },
+  'gg': { type: operations.SCROLL_TOP },
+  'G': { type: operations.SCROLL_BOTTOM },
+  '0': { type: operations.SCROLL_LEFT },
+  '$': { type: operations.SCROLL_RIGHT },
   'd': { type: operations.TABS_CLOSE },
   'u': { type: operations.TABS_REOPEN },
   'h': { type: operations.TABS_PREV, count: 1 },
@@ -27,10 +27,10 @@ const defaultKeymap = {
   'zi': { type: operations.ZOOM_IN },
   'zo': { type: operations.ZOOM_OUT },
   'zz': { type: operations.ZOOM_NEUTRAL },
-  'f': { type: actions.FOLLOW_START, newTab: false },
-  'F': { type: actions.FOLLOW_START, newTab: true },
-  'H': { type: actions.HISTORY_PREV },
-  'L': { type: actions.HISTORY_NEXT },
+  'f': { type: operations.FOLLOW_START, newTab: false },
+  'F': { type: operations.FOLLOW_START, newTab: true },
+  'H': { type: operations.HISTORY_PREV },
+  'L': { type: operations.HISTORY_NEXT },
 }
 
 const asKeymapChars = (keys) => {
diff --git a/src/content/index.js b/src/content/index.js
index 12d079f..1bba656 100644
--- a/src/content/index.js
+++ b/src/content/index.js
@@ -1,7 +1,11 @@
 import '../console/console-frame.scss';
 import * as inputActions from '../actions/input';
 import * as consoleFrames from '../console/frames';
+import * as scrolls from '../content/scrolls';
+import * as histories from '../content/histories';
 import actions from '../actions';
+import Follow from '../content/follow';
+import operations from '../operations';
 import contentReducer from '../reducers/content';
 
 consoleFrames.initialize(window.document);
@@ -22,11 +26,37 @@ window.addEventListener("keypress", (e) => {
     });
 });
 
+const execOperation = (operation) => {
+  switch (operation.type) {
+  case operations.SCROLL_LINES:
+    return scrolls.scrollLines(window, operation.count);
+  case operations.SCROLL_PAGES:
+    return scrolls.scrollPages(window, operation.count);
+  case operations.SCROLL_TOP:
+    return scrolls.scrollTop(window);
+  case operations.SCROLL_BOTTOM:
+    return scrolls.scrollBottom(window);
+  case operations.SCROLL_LEFT:
+    return scrolls.scrollLeft(window);
+  case operations.SCROLL_RIGHT:
+    return scrolls.scrollRight(window);
+  case operations.FOLLOW_START:
+    return new Follow(window.document, operation.newTab);
+  case operations.HISTORY_PREV:
+    return histories.prev(window);
+  case operations.HISTORY_NEXT:
+    return histories.next(window);
+  }
+}
+
 browser.runtime.onMessage.addListener((action) => {
   switch (action.type) {
   case actions.CONSOLE_HIDE:
     window.focus();
     return consoleFrames.blur(window.document);
+  case 'require.content.operation':
+    execOperation(action.operation);
+    return Promise.resolve();
   case 'vimvixen.command.enter':
     return browser.runtime.sendMessage({
       type: 'event.cmd.enter',
diff --git a/src/operations/index.js b/src/operations/index.js
index 16c05f2..6c2f05a 100644
--- a/src/operations/index.js
+++ b/src/operations/index.js
@@ -1,4 +1,15 @@
 export default {
+  SCROLL_LINES: 'scroll.lines',
+  SCROLL_PAGES: 'scroll.pages',
+  SCROLL_TOP: 'scroll.top',
+  SCROLL_BOTTOM: 'scroll.bottom',
+  SCROLL_LEFT: 'scroll.left',
+  SCROLL_RIGHT: 'scroll.right',
+  FOLLOW_START: 'follow.start',
+  HISTORY_PREV: 'history.prev',
+  HISTORY_NEXT: 'history.next',
+
+  // background
   TABS_CLOSE: 'tabs.close',
   TABS_REOPEN: 'tabs.reopen',
   TABS_PREV: 'tabs.prev',
diff --git a/src/reducers/background.js b/src/reducers/background.js
index 1bba13b..7a279c9 100644
--- a/src/reducers/background.js
+++ b/src/reducers/background.js
@@ -1,5 +1,4 @@
 import * as tabs from '../background/tabs';
-import * as zooms from '../background/zooms';
 import * as consoleActions from '../actions/console';
 import actions from '../actions';
 
diff --git a/src/reducers/content.js b/src/reducers/content.js
index bcf1160..ce59b18 100644
--- a/src/reducers/content.js
+++ b/src/reducers/content.js
@@ -1,7 +1,4 @@
 import * as consoleFrames from '../console/frames';
-import * as histories from '../content/histories';
-import * as scrolls from '../content/scrolls';
-import Follow from '../content/follow';
 import actions from '../actions';
 
 export default function reducer(state, action = {}) {
@@ -17,32 +14,5 @@ export default function reducer(state, action = {}) {
     }
   case actions.CMD_BUFFER:
     return consoleFrames.showCommand('buffer ');
-  case actions.SCROLL_LINES:
-    scrolls.scrollLines(window, action.count);
-    break;
-  case actions.SCROLL_PAGES:
-    scrolls.scrollPages(window, action.count);
-    break;
-  case actions.SCROLL_TOP:
-    scrolls.scrollTop(window);
-    break;
-  case actions.SCROLL_BOTTOM:
-    scrolls.scrollBottom(window);
-    break;
-  case actions.SCROLL_LEFT:
-    scrolls.scrollLeft(window);
-    break;
-  case actions.SCROLL_RIGHT:
-    scrolls.scrollRight(window);
-    break;
-  case actions.FOLLOW_START:
-    new Follow(window.document, action.newTab);
-    break;
-  case actions.HISTORY_PREV:
-    histories.prev(window);
-    break;
-  case actions.HISTORY_NEXT:
-    histories.next(window);
-    break;
   }
 }