diff --git a/content/treestyletab/bookmarksOverlay.js b/content/treestyletab/bookmarksOverlay.js
index e3abedd5..ca9e1447 100644
--- a/content/treestyletab/bookmarksOverlay.js
+++ b/content/treestyletab/bookmarksOverlay.js
@@ -65,7 +65,7 @@ var TreeStyleTabBookmarksService = {
 	bookmarkTabSubtree : function TSTBMService_bookmarkTabSubtree(aTabOrTabs) 
 	{
 		var tabs = aTabOrTabs;
-		if (!(tabs instanceof Array)) {
+		if (!Array.isArray(tabs)) {
 			tabs = [aTabOrTabs];
 		}
 
diff --git a/content/treestyletab/res/bookmarkMultipleTabs.xul b/content/treestyletab/res/bookmarkMultipleTabs.xul
index 50d97c89..8b835a69 100644
--- a/content/treestyletab/res/bookmarkMultipleTabs.xul
+++ b/content/treestyletab/res/bookmarkMultipleTabs.xul
@@ -12,11 +12,11 @@
    in JS files:
      window['piro.sakura.ne.jp'].bookmarkMultipleTabs.addBookmarkFor(tabsArray, folderName);
 
- license: The MIT License, Copyright (c) 2009-2010 SHIMODA "Piro" Hiroshi
-   http://www.cozmixng.org/repos/piro/fx3-compatibility-lib/trunk/license.txt
+ license: The MIT License, Copyright (c) 2009-2012 SHIMODA "Piro" Hiroshi
+   http://github.com/piroor/fxaddonlibs/blob/master/license.txt
  original:
-   http://www.cozmixng.org/repos/piro/fx3-compatibility-lib/trunk/bookmarkMultipleTabs.xul
-   http://www.cozmixng.org/repos/piro/fx3-compatibility-lib/trunk/bookmarkMultipleTabs_bookmarkPropertiesOverlay.xul
+   http://github.com/piroor/fxaddonlibs/blob/master/bookmarkMultipleTabs.xul
+   http://github.com/piroor/fxaddonlibs/blob/master/bookmarkMultipleTabs_bookmarkPropertiesOverlay.xul
 -->
 <overlay xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul">
 <script type="application/javascript"><![CDATA[
@@ -24,7 +24,7 @@
 window.addEventListener('DOMContentLoaded', function() {
 	window.removeEventListener('DOMContentLoaded', arguments.callee, true);
 
-	const currentRevision = 4;
+	const currentRevision = 5;
 
 	if (!('piro.sakura.ne.jp' in window)) window['piro.sakura.ne.jp'] = {};
 
@@ -57,12 +57,34 @@ window.addEventListener('DOMContentLoaded', function() {
 
 			var b = this.getTabBrowserFromChild(aTabs[0]);
 
-			if ('PlacesUIUtils' in window || 'PlacesUtils' in window) { // Firefox 3
-				if (aFolderName)
-					this.Prefs.setCharPref('temp.showMinimalAddMultiBookmarkUI.folderName', unescape(encodeURIComponent(aFolderName)));
-				var utils = 'PlacesUIUtils' in window ? PlacesUIUtils : PlacesUtils ;
-				utils.showMinimalAddMultiBookmarkUI(Array.slice(aTabs).map(this.addBookmarkTabsFilter));
-				this.Prefs.clearUserPref('temp.showMinimalAddMultiBookmarkUI.folderName');
+			if ('PlacesUIUtils' in window || 'PlacesUtils' in window) { // Firefox 3 or later
+				try {
+					var utils = 'PlacesUIUtils' in window ? PlacesUIUtils : PlacesUtils ;
+					var tabs = Array.slice(aTabs).map(this.addBookmarkTabsFilter);
+					if (aFolderName)
+						this.Prefs.setCharPref('temp.showMinimalAddMultiBookmarkUI.folderName', unescape(encodeURIComponent(aFolderName)));
+					if ('showBookmarkDialog' in utils) { // Firefox 11 or later
+						utils.showBookmarkDialog({
+							action  : 'add',
+							type    : 'folder',
+							// title   : aFolderName, // don't specify it, because Firefox doesn't create bookmarks if the title is given!
+							URIList : tabs,
+							hiddenRows : ['description', 'location', 'loadInSidebar', 'keyword']
+						}, window);
+					}
+					else if ('showMinimalAddMultiBookmarkUI' in utils) { // Firefox 3 - 10
+						utils.showMinimalAddMultiBookmarkUI(tabs);
+					}
+					else {
+						throw new Error('there is no method to create bookmarks from tabs!');
+					}
+				}
+				catch(e) {
+					alert(e.message+'\n'+e.stack);
+				}
+				finally {
+					this.Prefs.clearUserPref('temp.showMinimalAddMultiBookmarkUI.folderName');
+				}
 				return;
 			}