diff --git a/mobile/src/com/cradle/iitc_mobile/IITC_WebView.java b/mobile/src/com/cradle/iitc_mobile/IITC_WebView.java
index 4e5127cf..f00cad8d 100644
--- a/mobile/src/com/cradle/iitc_mobile/IITC_WebView.java
+++ b/mobile/src/com/cradle/iitc_mobile/IITC_WebView.java
@@ -71,7 +71,15 @@ public class IITC_WebView extends WebView {
             @Override
             public void run() {
                 if (isInFullscreen() && (getFullscreenStatus() & (FS_NAVBAR)) != 0) {
-                    setSystemUiVisibility(SYSTEM_UI_FLAG_HIDE_NAVIGATION);
+                    int systemUiVisibility = SYSTEM_UI_FLAG_HIDE_NAVIGATION;
+                    // in immersive mode the user can interact with the app while the navbar is hidden
+                    // this mode is available since KitKat
+                    // you can leave this mode by swiping down from the top of the screen. this does only work
+                    // when the app is in total-fullscreen mode
+                    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT && (mFullscreenStatus & FS_SYSBAR) != 0) {
+                        systemUiVisibility |= SYSTEM_UI_FLAG_IMMERSIVE;
+                    }
+                    setSystemUiVisibility(systemUiVisibility);
                 }
             }
         };
@@ -185,20 +193,22 @@ public class IITC_WebView extends WebView {
     @Override
     public boolean onTouchEvent(MotionEvent event) {
         getHandler().removeCallbacks(mNavHider);
-        getHandler().postDelayed(mNavHider, 2000);
+        getHandler().postDelayed(mNavHider, 3000);
         return super.onTouchEvent(event);
     }
 
     @Override
     public void setSystemUiVisibility(int visibility) {
-        getHandler().postDelayed(mNavHider, 2000);
+        if ((visibility & SYSTEM_UI_FLAG_HIDE_NAVIGATION) == 0) {
+            getHandler().postDelayed(mNavHider, 3000);
+        }
         super.setSystemUiVisibility(visibility);
     }
 
     @Override
     public void onWindowFocusChanged(boolean hasWindowFocus) {
         if (hasWindowFocus) {
-            getHandler().postDelayed(mNavHider, 2000);
+            getHandler().postDelayed(mNavHider, 3000);
         } else {
             getHandler().removeCallbacks(mNavHider);
         }
@@ -220,7 +230,7 @@ public class IITC_WebView extends WebView {
                 attrs.flags |= WindowManager.LayoutParams.FLAG_FULLSCREEN;
             }
             if ((mFullscreenStatus & FS_NAVBAR) != 0) {
-                setSystemUiVisibility(View.SYSTEM_UI_FLAG_HIDE_NAVIGATION);
+                getHandler().post(mNavHider);
             }
             if ((mFullscreenStatus & FS_STATUSBAR) != 0) {
                 loadUrl("javascript: $('#updatestatus').hide();");
diff --git a/mobile/src/com/cradle/iitc_mobile/share/IntentListView.java b/mobile/src/com/cradle/iitc_mobile/share/IntentListView.java
index e11fc766..785c1edb 100644
--- a/mobile/src/com/cradle/iitc_mobile/share/IntentListView.java
+++ b/mobile/src/com/cradle/iitc_mobile/share/IntentListView.java
@@ -39,7 +39,7 @@ public class IntentListView extends ListView {
 
     private class IntentAdapter extends ArrayAdapter<ResolveInfo> {
 
-        // actually the mdpi pixel size is 48, but this ugly...so scale icons down for listView
+        // actually the mdpi pixel size is 48, but this looks ugly...so scale icons down for listView
         private static final int MDPI_PX = 36;
 
         private IntentAdapter() {