diff --git a/src/com/android/browser/BaseUi.java b/src/com/android/browser/BaseUi.java
index e3f5986..cfe9a53 100644
--- a/src/com/android/browser/BaseUi.java
+++ b/src/com/android/browser/BaseUi.java
@@ -113,6 +113,7 @@
     protected TitleBar mTitleBar;
     private NavigationBarBase mNavigationBar;
     protected PieControl mPieControl;
+    private boolean mBlockFocusAnimations;
 
     public BaseUi(Activity browser, UiController controller) {
         mActivity = browser;
@@ -264,6 +265,8 @@
     @Override
     public void setActiveTab(final Tab tab) {
         if (tab == null) return;
+        // block unnecessary focus change animations during tab switch
+        mBlockFocusAnimations = true;
         mHandler.removeMessages(MSG_HIDE_TITLEBAR);
         if ((tab != mActiveTab) && (mActiveTab != null)) {
             removeTabFromContentView(mActiveTab);
@@ -294,6 +297,7 @@
         onProgressChanged(tab);
         mNavigationBar.setIncognitoMode(tab.isPrivateBrowsingEnabled());
         updateAutoLogin(tab, false);
+        mBlockFocusAnimations = false;
     }
 
     protected void updateUrlBarAutoShowManagerTarget() {
@@ -860,4 +864,10 @@
             mContentView.setLayoutParams(params);
         }
     }
+
+    @Override
+    public boolean blockFocusAnimations() {
+        return mBlockFocusAnimations;
+    }
+
 }
diff --git a/src/com/android/browser/NavigationBarTablet.java b/src/com/android/browser/NavigationBarTablet.java
index b9c86e3..426174b 100644
--- a/src/com/android/browser/NavigationBarTablet.java
+++ b/src/com/android/browser/NavigationBarTablet.java
@@ -259,34 +259,49 @@
         mStopButton.setContentDescription(mRefreshDescription);
     }
 
+    private AnimatorSet mAnimation;
+
     private void hideNavButtons() {
+        if (mBaseUi.blockFocusAnimations()) {
+            mNavButtons.setVisibility(View.GONE);
+            return;
+        }
         int awidth = mNavButtons.getMeasuredWidth();
         Animator anim1 = ObjectAnimator.ofFloat(mNavButtons, View.TRANSLATION_X, 0, - awidth);
         Animator anim2 = ObjectAnimator.ofInt(mUrlContainer, "left", mUrlContainer.getLeft(),
                 mUrlContainer.getPaddingLeft());
         Animator anim3 = ObjectAnimator.ofFloat(mNavButtons, View.ALPHA, 1f, 0f);
-        AnimatorSet combo = new AnimatorSet();
-        combo.playTogether(anim1, anim2, anim3);
-        combo.addListener(new AnimatorListenerAdapter() {
+        mAnimation = new AnimatorSet();
+        mAnimation.playTogether(anim1, anim2, anim3);
+        mAnimation.addListener(new AnimatorListenerAdapter() {
             @Override
             public void onAnimationEnd(Animator animation) {
                 mNavButtons.setVisibility(View.GONE);
+                mAnimation = null;
             }
         });
-        combo.setDuration(150);
-        combo.start();
+        mAnimation.setDuration(150);
+        mAnimation.start();
     }
 
     private void showNavButtons() {
-        int awidth = mNavButtons.getMeasuredWidth();
-        Animator anim1 = ObjectAnimator.ofFloat(mNavButtons, View.TRANSLATION_X, -awidth, 0);
-        Animator anim2 = ObjectAnimator.ofInt(mUrlContainer, "left", 0, awidth);
-        Animator anim3 = ObjectAnimator.ofFloat(mNavButtons, View.ALPHA, 0f, 1f);
-        AnimatorSet combo = new AnimatorSet();
-        combo.playTogether(anim1, anim2, anim3);
+        if (mAnimation != null) {
+            mAnimation.cancel();
+        }
         mNavButtons.setVisibility(View.VISIBLE);
-        combo.setDuration(150);
-        combo.start();
+        if (!mBaseUi.blockFocusAnimations()) {
+            int awidth = mNavButtons.getMeasuredWidth();
+            Animator anim1 = ObjectAnimator.ofFloat(mNavButtons,
+                    View.TRANSLATION_X, -awidth, 0);
+            Animator anim2 = ObjectAnimator.ofInt(mUrlContainer, "left", 0,
+                    awidth);
+            Animator anim3 = ObjectAnimator.ofFloat(mNavButtons, View.ALPHA,
+                    0f, 1f);
+            AnimatorSet combo = new AnimatorSet();
+            combo.playTogether(anim1, anim2, anim3);
+            combo.setDuration(150);
+            combo.start();
+        }
     }
 
     private void showHideStar(Tab tab) {
diff --git a/src/com/android/browser/UI.java b/src/com/android/browser/UI.java
index aeab746..96f6640 100644
--- a/src/com/android/browser/UI.java
+++ b/src/com/android/browser/UI.java
@@ -146,4 +146,6 @@
 
     public boolean shouldCaptureThumbnails();
 
+    boolean blockFocusAnimations();
+
 }