--- browser.xul.orig	2006-09-14 15:58:57.000000000 +0900
+++ browser.xul	2008-04-22 09:56:26.000000000 +0900
@@ -249,7 +249,11 @@
     <key keycode="VK_BACK" command="cmd_handleBackspace"/>
     <key keycode="VK_BACK" command="cmd_handleShiftBackspace" modifiers="shift"/>
     <key id="goBackKb"  keycode="VK_LEFT" command="Browser:Back" modifiers="alt"/>
+    <key id="goBackKb"  key="b" command="Browser:Back" modifiers="control"/>
+    <key id="goBackKb"  key="b" command="Browser:Back"/>
     <key id="goForwardKb"  keycode="VK_RIGHT" command="Browser:Forward" modifiers="alt"/>
+    <key id="goForwardKb"  key="f" command="Browser:Forward" modifiers="control"/>
+    <key id="goForwardKb"  key="f" command="Browser:Forward"/>
     <key id="goBackKb2" key="&goBackCmd.commandKey;" command="Browser:Back" modifiers="accel"/>
     <key id="goForwardKb2" key="&goForwardCmd.commandKey;" command="Browser:Forward" modifiers="accel"/>
     <key id="goHome" keycode="VK_HOME" command="Browser:Home" modifiers="alt"/>