--- platformHTMLBindings.xml.orig	2008-04-22 09:59:08.000000000 +0900
+++ platformHTMLBindings.xml	2008-04-22 09:58:50.000000000 +0900
@@ -67,6 +67,25 @@
       <handler event="keypress" key="/" command="cmd_findTypeText"/>
       <handler event="keypress" key="/" command="cmd_findTypeText" modifiers="control"/>
       <handler event="keypress" key="'" command="cmd_findTypeLinks"/>
+      <!-- by yuuji -->
+        <handler event="keypress" key="b" command="Browser:Back"/>
+        <handler event="keypress" keycode="VK_BACK" command="cmd_scrollPageUp"/>
+        <handler event="keypress" keycode="VK_BACK" command="cmd_scrollPageUp" />
+        <handler event="keypress" key="h" modifiers="control" command="cmd_scrollPageUp" />
+        <handler event="keypress" key=" " command="cmd_scrollPageDown" />
+        <handler event="keypress" key="i" command="cmd_scrollPageUp" modifiers="alt"/>
+        <handler event="keypress" key="h" command="cmd_scrollLeft" modifiers="alt"/>
+        <handler event="keypress" key="h" command="cmd_scrollLeft" />
+        <handler event="keypress" key="u" command="cmd_scrollLeft" modifiers="alt"/>
+        <handler event="keypress" key="j" command="cmd_scrollLineDown" modifiers="alt"/>
+        <handler event="keypress" key="j" command="cmd_scrollLineDown" />
+        <handler event="keypress" key="k" command="cmd_scrollLineUp" modifiers="alt"/>
+        <handler event="keypress" key="k" command="cmd_scrollLineUp" />
+        <handler event="keypress" key="l" command="cmd_scrollRight" modifiers="alt"/>
+        <handler event="keypress" key="l" command="cmd_scrollRight" />
+        <handler event="keypress" key="g" command="cmd_scrollTop" />
+        <handler event="keypress" key="g" command="cmd_scrollBottom" modiffiers="shift"/>
+      <!-- by yuuji ends here -->
 
       <handler event="keypress" keycode="VK_PAGE_UP" command="cmd_movePageUp"/>
       <handler event="keypress" keycode="VK_PAGE_DOWN" command="cmd_movePageDown"/>