diff --git a/chrome/content/tabscope/prefs.js b/chrome/content/tabscope/prefs.js
index 2b6a9cf..a3b645f 100644
--- a/chrome/content/tabscope/prefs.js
+++ b/chrome/content/tabscope/prefs.js
@@ -107,6 +107,11 @@ var PrefsUI = {
 		openUILinkIn("http://www.xuldev.org/tabscope/options.php", where);
 	},
 
+	onAeroSelected: function(aText) {
+		var ps = Cc["@mozilla.org/embedcomp/prompt-service;1"].getService(Ci.nsIPromptService);
+		ps.alert(window, document.title, aText);
+	},
+
 };
 
 
diff --git a/chrome/content/tabscope/prefs.xul b/chrome/content/tabscope/prefs.xul
index 13f5acb..b28b3c4 100644
--- a/chrome/content/tabscope/prefs.xul
+++ b/chrome/content/tabscope/prefs.xul
@@ -41,7 +41,9 @@
 						<menupopup>
 							<menuitem label="&tabscope.popup_style.flat;" value="" />
 							<menuitem label="&tabscope.popup_style.dark;" value="dark" />
-							<menuitem label="Aero Glass" value="aero" disabled="true" />
+							<menuitem label="Aero Glass" value="aero" disabled="true"
+							          oncommand="PrefsUI.onAeroSelected(this.getAttribute('_notice'));"
+							          _notice="&tabscope.popup_style.aero.notice;" />
 						</menupopup>
 					</menulist>
 				</row>
diff --git a/chrome/locale/en-US/tabscope/prefs.dtd b/chrome/locale/en-US/tabscope/prefs.dtd
index 40bb651..6a198e8 100644
--- a/chrome/locale/en-US/tabscope/prefs.dtd
+++ b/chrome/locale/en-US/tabscope/prefs.dtd
@@ -4,6 +4,7 @@
 <!ENTITY tabscope.popup_style "Popup Appearance">
 <!ENTITY tabscope.popup_style.flat "Flat">
 <!ENTITY tabscope.popup_style.dark "Dark">
+<!ENTITY tabscope.popup_style.aero.notice "If you choose 'Aero Glass', '&tabscope.animate_fade;' option is disabled automatically.">
 <!ENTITY tabscope.popup_alignment "Alignment of popup">
 <!ENTITY tabscope.popup_alignment.auto "auto-detect">
 <!ENTITY tabscope.popup_alignment.top "on top of a tab">
diff --git a/chrome/locale/ja/tabscope/prefs.dtd b/chrome/locale/ja/tabscope/prefs.dtd
index dc17002..2bf9129 100644
--- a/chrome/locale/ja/tabscope/prefs.dtd
+++ b/chrome/locale/ja/tabscope/prefs.dtd
@@ -4,6 +4,7 @@
 <!ENTITY tabscope.popup_style "ポップアップのデザイン">
 <!ENTITY tabscope.popup_style.flat "フラット">
 <!ENTITY tabscope.popup_style.dark "ダーク">
+<!ENTITY tabscope.popup_style.aero.notice "「Aero Glass」を選択すると、「&tabscope.animate_fade;」は自動的に無効化されます。">
 <!ENTITY tabscope.popup_alignment "ポップアップの表示位置">
 <!ENTITY tabscope.popup_alignment.auto "自動で判別">
 <!ENTITY tabscope.popup_alignment.top "タブの上側">