diff --git a/content/treestyletab/editBookmarkOverlay.js b/content/treestyletab/editBookmarkOverlay.js
index 41197798..3a855753 100644
--- a/content/treestyletab/editBookmarkOverlay.js
+++ b/content/treestyletab/editBookmarkOverlay.js
@@ -36,7 +36,7 @@ var TreeStyleEditableBookmarkService = {
 
 /* to be inserted to the container...
 	<row align="center">
-		<label value="&bookmark.parent.label;"
+		<label value=" (bookmarkProperty.parent.label) "
 			control="treestyletab-parent-menulist"/>
 		<menulist id="treestyletab-parent-menulist"
 			flex="1"
@@ -44,7 +44,7 @@ var TreeStyleEditableBookmarkService = {
 			<menupopup id="treestyletab-parent-popup">
 				<menuseparator id="treestyletab-parent-blank-item-separator"/>
 				<menuitem id="treestyletab-parent-blank-item"
-					label="&bookmark.parent.blank.label;"
+					label=" (bookmarkProperty.parent.blank.label) "
 					value=""/>
 			</menupopup>
 		</menulist>
diff --git a/locale/de-DE/treestyletab/treestyletab.dtd b/locale/de-DE/treestyletab/treestyletab.dtd
index ba2b815d..d26bc01c 100644
--- a/locale/de-DE/treestyletab/treestyletab.dtd
+++ b/locale/de-DE/treestyletab/treestyletab.dtd
@@ -178,6 +178,3 @@
 <!ENTITY context.bookmarkTabSubTree.accesskey "t">
 
 <!ENTITY group.default "Neue Gruppe">
-
-<!ENTITY bookmark.parent.label       "Übergeordnetes Tab:">
-<!ENTITY bookmark.parent.blank.label "(nothing)">
diff --git a/locale/de-DE/treestyletab/treestyletab.properties b/locale/de-DE/treestyletab/treestyletab.properties
index f3041c30..716fa9ad 100644
--- a/locale/de-DE/treestyletab/treestyletab.properties
+++ b/locale/de-DE/treestyletab/treestyletab.properties
@@ -22,3 +22,6 @@ openGroupBookmarkBehavior.replace=Replace current one tab
 
 openSelectedPlaces.bookmarks=from %2$S bookmarks, including "%1$S"
 openSelectedPlaces.history=from %2$S history entries, including "%1$S"
+
+bookmarkProperty.parent.label=Übergeordnetes Tab:
+bookmarkProperty.parent.blank.label=(nothing)
diff --git a/locale/en-US/treestyletab/treestyletab.dtd b/locale/en-US/treestyletab/treestyletab.dtd
index bc322d44..9f75ff90 100644
--- a/locale/en-US/treestyletab/treestyletab.dtd
+++ b/locale/en-US/treestyletab/treestyletab.dtd
@@ -176,6 +176,3 @@
 <!ENTITY context.bookmarkTabSubTree.accesskey   "t">
 
 <!ENTITY group.default "New Group">
-
-<!ENTITY bookmark.parent.label       "Parent tab:">
-<!ENTITY bookmark.parent.blank.label "(nothing)">
diff --git a/locale/en-US/treestyletab/treestyletab.properties b/locale/en-US/treestyletab/treestyletab.properties
index bb14c48e..334f9b65 100644
--- a/locale/en-US/treestyletab/treestyletab.properties
+++ b/locale/en-US/treestyletab/treestyletab.properties
@@ -22,3 +22,6 @@ openGroupBookmarkBehavior.replace=Replace current one tab
 
 openSelectedPlaces.bookmarks=from %2$S bookmarks, including "%1$S"
 openSelectedPlaces.history=from %2$S history entries, including "%1$S"
+
+bookmarkProperty.parent.label=Parent tab:
+bookmarkProperty.parent.blank.label=(nothing)
diff --git a/locale/es-ES/treestyletab/treestyletab.dtd b/locale/es-ES/treestyletab/treestyletab.dtd
index 5e80341a..2953a0a7 100644
--- a/locale/es-ES/treestyletab/treestyletab.dtd
+++ b/locale/es-ES/treestyletab/treestyletab.dtd
@@ -180,6 +180,3 @@
 <!ENTITY context.bookmarkTabSubTree.accesskey "t">
 
 <!ENTITY group.default "New Group">
-
-<!ENTITY bookmark.parent.label       "Parent tab:">
-<!ENTITY bookmark.parent.blank.label "(nothing)">
diff --git a/locale/es-ES/treestyletab/treestyletab.properties b/locale/es-ES/treestyletab/treestyletab.properties
index 42cde395..a486a9cd 100644
--- a/locale/es-ES/treestyletab/treestyletab.properties
+++ b/locale/es-ES/treestyletab/treestyletab.properties
@@ -22,3 +22,6 @@ openGroupBookmarkBehavior.replace=Replace current one tab
 
 openSelectedPlaces.bookmarks=from %2$S bookmarks, including "%1$S"
 openSelectedPlaces.history=from %2$S history entries, including "%1$S"
+
+bookmarkProperty.parent.label=Parent Tab:
+bookmarkProperty.parent.blank.label=(nothing)
diff --git a/locale/it-IT/treestyletab/treestyletab.dtd b/locale/it-IT/treestyletab/treestyletab.dtd
index 026f18c1..0508fb5b 100644
--- a/locale/it-IT/treestyletab/treestyletab.dtd
+++ b/locale/it-IT/treestyletab/treestyletab.dtd
@@ -180,6 +180,3 @@
 <!ENTITY context.bookmarkTabSubTree.accesskey "l">
 
 <!ENTITY group.default "New Group">
-
-<!ENTITY bookmark.parent.label       "Parent tab:">
-<!ENTITY bookmark.parent.blank.label "(nothing)">
diff --git a/locale/it-IT/treestyletab/treestyletab.properties b/locale/it-IT/treestyletab/treestyletab.properties
index dea838cd..0d890174 100644
--- a/locale/it-IT/treestyletab/treestyletab.properties
+++ b/locale/it-IT/treestyletab/treestyletab.properties
@@ -22,3 +22,6 @@ openGroupBookmarkBehavior.replace=Replace current one tab
 
 openSelectedPlaces.bookmarks=from %2$S bookmarks, including "%1$S"
 openSelectedPlaces.history=from %2$S history entries, including "%1$S"
+
+bookmarkProperty.parent.label=Parent Tab:
+bookmarkProperty.parent.blank.label=(nothing)
diff --git a/locale/ja/treestyletab/treestyletab.dtd b/locale/ja/treestyletab/treestyletab.dtd
index 24afc1f8..ed6d777f 100644
--- a/locale/ja/treestyletab/treestyletab.dtd
+++ b/locale/ja/treestyletab/treestyletab.dtd
@@ -176,6 +176,3 @@
 <!ENTITY context.bookmarkTabSubTree.accesskey   "t">
 
 <!ENTITY group.default "新しいグループ">
-
-<!ENTITY bookmark.parent.label       "親のタブ:">
-<!ENTITY bookmark.parent.blank.label "（なし）">
diff --git a/locale/ja/treestyletab/treestyletab.properties b/locale/ja/treestyletab/treestyletab.properties
index 365052e5..9a6ac201 100644
--- a/locale/ja/treestyletab/treestyletab.properties
+++ b/locale/ja/treestyletab/treestyletab.properties
@@ -22,3 +22,6 @@ openGroupBookmarkBehavior.replace=現在のタブを置き換える
 
 openSelectedPlaces.bookmarks=%1$S を含む %2$S 件のブックマークから
 openSelectedPlaces.history=%1$S を含む %2$S 件の履歴から
+
+bookmarkProperty.parent.label=親のタブ:
+bookmarkProperty.parent.blank.label=（なし）
diff --git a/locale/pl-PL/treestyletab/treestyletab.dtd b/locale/pl-PL/treestyletab/treestyletab.dtd
index 5d6de65a..4ae1c353 100644
--- a/locale/pl-PL/treestyletab/treestyletab.dtd
+++ b/locale/pl-PL/treestyletab/treestyletab.dtd
@@ -179,6 +179,3 @@
 <!ENTITY context.bookmarkTabSubTree.accesskey "A">
 
 <!ENTITY group.default "New Group">
-
-<!ENTITY bookmark.parent.label       "Parent tab:">
-<!ENTITY bookmark.parent.blank.label "(nothing)">
diff --git a/locale/pl-PL/treestyletab/treestyletab.properties b/locale/pl-PL/treestyletab/treestyletab.properties
index b76d2704..22c5c28b 100644
--- a/locale/pl-PL/treestyletab/treestyletab.properties
+++ b/locale/pl-PL/treestyletab/treestyletab.properties
@@ -22,3 +22,6 @@ openGroupBookmarkBehavior.replace=Replace current one tab
 
 openSelectedPlaces.bookmarks=from %2$S bookmarks, including "%1$S"
 openSelectedPlaces.history=from %2$S history entries, including "%1$S"
+
+bookmarkProperty.parent.label=Parent Tab:
+bookmarkProperty.parent.blank.label=(nothing)
diff --git a/locale/ru-RU/treestyletab/treestyletab.dtd b/locale/ru-RU/treestyletab/treestyletab.dtd
index 8e077105..1f178ab9 100755
--- a/locale/ru-RU/treestyletab/treestyletab.dtd
+++ b/locale/ru-RU/treestyletab/treestyletab.dtd
@@ -180,6 +180,3 @@
 <!ENTITY context.bookmarkTabSubTree.accesskey "t">
 
 <!ENTITY group.default "New Group">
-
-<!ENTITY bookmark.parent.label       "Parent tab:">
-<!ENTITY bookmark.parent.blank.label "(nothing)">
diff --git a/locale/ru-RU/treestyletab/treestyletab.properties b/locale/ru-RU/treestyletab/treestyletab.properties
index 8ecca831..6aa222af 100755
--- a/locale/ru-RU/treestyletab/treestyletab.properties
+++ b/locale/ru-RU/treestyletab/treestyletab.properties
@@ -22,3 +22,6 @@ openGroupBookmarkBehavior.replace=Replace current one tab
 
 openSelectedPlaces.bookmarks=from %2$S bookmarks, including "%1$S"
 openSelectedPlaces.history=from %2$S history entries, including "%1$S"
+
+bookmarkProperty.parent.label=Parent Tab:
+bookmarkProperty.parent.blank.label=(nothing)
diff --git a/locale/zh-CN/treestyletab/treestyletab.dtd b/locale/zh-CN/treestyletab/treestyletab.dtd
index 38897d1a..de3d8543 100644
--- a/locale/zh-CN/treestyletab/treestyletab.dtd
+++ b/locale/zh-CN/treestyletab/treestyletab.dtd
@@ -201,5 +201,3 @@
 <!ENTITY context.bookmarkTabSubTree.accesskey   "t">
 
 <!ENTITY group.default "新建组">
-<!ENTITY bookmark.parent.label       "Parent tab:">
-<!ENTITY bookmark.parent.blank.label "(nothing)">
diff --git a/locale/zh-CN/treestyletab/treestyletab.properties b/locale/zh-CN/treestyletab/treestyletab.properties
index b551422b..bd414c0b 100644
--- a/locale/zh-CN/treestyletab/treestyletab.properties
+++ b/locale/zh-CN/treestyletab/treestyletab.properties
@@ -21,3 +21,6 @@ openGroupBookmarkBehavior.separate=打开到新的独立标签中 （Firefox 默
 openGroupBookmarkBehavior.separateOld=打开到新的独立标签中
 openGroupBookmarkBehavior.replace=替代当前标签打开
 openGroupBookmarkBehavior.replaceOld=替代当前全部标签打开 （Firefox 默认）
+
+bookmarkProperty.parent.label=Parent Tab:
+bookmarkProperty.parent.blank.label=(nothing)
diff --git a/locale/zh-TW/treestyletab/treestyletab.dtd b/locale/zh-TW/treestyletab/treestyletab.dtd
index 9bf6bfc4..bd94d456 100644
--- a/locale/zh-TW/treestyletab/treestyletab.dtd
+++ b/locale/zh-TW/treestyletab/treestyletab.dtd
@@ -175,6 +175,3 @@
 <!ENTITY context.bookmarkTabSubTree.accesskey "t">
 
 <!ENTITY group.default "New Group">
-
-<!ENTITY bookmark.parent.label       "Parent tab:">
-<!ENTITY bookmark.parent.blank.label "(nothing)">
diff --git a/locale/zh-TW/treestyletab/treestyletab.properties b/locale/zh-TW/treestyletab/treestyletab.properties
index d1c1099c..4a7a0e43 100644
--- a/locale/zh-TW/treestyletab/treestyletab.properties
+++ b/locale/zh-TW/treestyletab/treestyletab.properties
@@ -22,3 +22,6 @@ openGroupBookmarkBehavior.replace=Replace current one tab
 
 openSelectedPlaces.bookmarks=from %2$S bookmarks, including "%1$S"
 openSelectedPlaces.history=from %2$S history entries, including "%1$S"
+
+bookmarkProperty.parent.label=Parent Tab:
+bookmarkProperty.parent.blank.label=(nothing)