diff -ur workdir-orig/chrome/content/gm-notifier/gm-notifier.js workdir/chrome/content/gm-notifier/gm-notifier.js
--- workdir-orig/chrome/content/gm-notifier/gm-notifier.js	2006-01-06 01:21:04.000000000 +0900
+++ workdir/chrome/content/gm-notifier/gm-notifier.js	2006-01-13 14:08:51.000000000 +0900
@@ -121,6 +121,7 @@
  * 1 - new tab
  * 2 - new window 
  * 3 - new unfocused tab
+ * 4 - none; just check
  *
  * @param aOverride - force a certain load method
  */
@@ -150,7 +151,9 @@
   // where to load the webmail into
   var location = aOverride ? aOverride : this.wm_prefs.getIntPref(this.wm_prefs.PREF_LOAD_LOCATION);
 
-  if (location == 2) {
+  if (location == 4) {
+    this.checkNow();
+  } else if (location == 2) {
     window.open(url);
   } else if ((location == 1) || (location == 3)){
     var myTab = getBrowser().addTab(url, null, null);
diff -ur workdir-orig/chrome/content/gm-notifier/gm-preferences.xul workdir/chrome/content/gm-notifier/gm-preferences.xul
--- workdir-orig/chrome/content/gm-notifier/gm-preferences.xul	2006-01-06 01:21:04.000000000 +0900
+++ workdir/chrome/content/gm-notifier/gm-preferences.xul	2006-01-13 14:22:35.000000000 +0900
@@ -243,6 +243,7 @@
             <menuitem value="1" label="&notifier.prefs.load.location.new_tab;"/>
             <menuitem value="2" label="&notifier.prefs.load.location.new_window;"/>
             <menuitem value="3" label="&notifier.prefs.load.location.new_unfocused_tab;"/>
+            <menuitem value="4" label="&notifier.prefs.load.location.none;"/>
           </menupopup>
         </menulist>
       </hbox>
diff -ur workdir-orig/chrome/locale/en-US/gm-notifier/gm-notifier.dtd workdir/chrome/locale/en-US/gm-notifier/gm-notifier.dtd
--- workdir-orig/chrome/locale/en-US/gm-notifier/gm-notifier.dtd	2006-01-05 08:21:34.000000000 +0900
+++ workdir/chrome/locale/en-US/gm-notifier/gm-notifier.dtd	2006-01-13 13:45:31.000000000 +0900
@@ -61,6 +61,7 @@
 <!ENTITY notifier.prefs.load.location.new_tab "New tab">
 <!ENTITY notifier.prefs.load.location.new_unfocused_tab "New unfocused tab">
 <!ENTITY notifier.prefs.load.location.new_window "New window">
+<!ENTITY notifier.prefs.load.location.none "None; just check">
 
 <!ENTITY notifier.prefs.load.reset_counter.label "reset counter when the notifier icon is clicked.">
 <!ENTITY notifier.prefs.load.reset_counter.accesskey "r">
diff -ur workdir-orig/chrome/locale/ja-JP/gm-notifier/gm-notifier.dtd workdir/chrome/locale/ja-JP/gm-notifier/gm-notifier.dtd
--- workdir-orig/chrome/locale/ja-JP/gm-notifier/gm-notifier.dtd	2006-01-05 08:21:33.000000000 +0900
+++ workdir/chrome/locale/ja-JP/gm-notifier/gm-notifier.dtd	2006-01-13 15:40:50.000000000 +0900
@@ -61,6 +61,7 @@
 <!ENTITY notifier.prefs.load.location.new_tab "新しいタブで開く">
 <!ENTITY notifier.prefs.load.location.new_unfocused_tab "新しいタブで開く(フォーカスを与えない)">
 <!ENTITY notifier.prefs.load.location.new_window "新しいウインドウで開く">
+<!ENTITY notifier.prefs.load.location.none "開かない、チェックだけ">
 
 <!ENTITY notifier.prefs.load.reset_counter.label "通知のアイコンをクリックしたときにカウンタをリセットする">
 <!ENTITY notifier.prefs.load.reset_counter.accesskey "r">