diff --git a/mozilla/themes/classic/global/mac/menu.css b/mozilla/themes/classic/global/mac/menu.css
index 8d4161ef511..af343c09c7e 100644
--- a/mozilla/themes/classic/global/mac/menu.css
+++ b/mozilla/themes/classic/global/mac/menu.css
@@ -37,6 +37,7 @@ menuitem {
   color: MenuText;
   font: menu;
   list-style-image: none;
+  -moz-image-region: auto;
 }
 
 menuitem[default="true"] {
@@ -89,15 +90,18 @@ menuitem[_moz-menuactive="true"][disabled="true"] {
   margin: 0px 0px 0px 6px;
   width: 8px;
   list-style-image: url("chrome://global/skin/menu/menu-arrow.gif");
+  -moz-image-region: auto;
 }
 
 .menu-right[disabled="true"],
 .menu-right[_moz-menuactive="true"][disabled="true"] {
   list-style-image: url("chrome://global/skin/menu/menu-arrow-dis.gif");
+  -moz-image-region: auto;
 }
 
 .menu-right[_moz-menuactive="true"] {
   list-style-image: url("chrome://global/skin/menu/menu-arrow-hov.gif");
+  -moz-image-region: auto;
 }
 
 /* ::::: menu/menuitems in menubar ::::: */
@@ -156,28 +160,34 @@ popup > menuitem[_moz-menuactive="true"] {
 
 menuitem[checked="true"] {
   list-style-image: url("chrome://global/skin/menu/menu-check.gif");
+  -moz-image-region: auto;
 }
 
 menuitem[checked="true"][disabled="true"] {
   list-style-image: url("chrome://global/skin/menu/menu-check-dis.gif");
+  -moz-image-region: auto;
 }
 
 menuitem[checked="true"][_moz-menuactive="true"] {
   list-style-image: url("chrome://global/skin/menu/menu-check-hov.gif");
+  -moz-image-region: auto;
 }
 
 /* ::::: radio menuitem ::::: */
 
 menuitem[checked="true"][type="radio"] {
   list-style-image: url("chrome://global/skin/menu/menu-radio.gif");
+  -moz-image-region: auto;
 }
 
 menuitem[checked="true"][type="radio"][_moz-menuactive="true"] {
   list-style-image: url("chrome://global/skin/menu/menu-radio-hov.gif");
+  -moz-image-region: auto;
 }
 
 menuitem[checked="true"][type="radio"][disabled="true"] {
   list-style-image: url("chrome://global/skin/menu/menu-radio-dis.gif");
+  -moz-image-region: auto;
 }
 
 /* ::::: menuitems in menulists ::::: */
@@ -192,11 +202,13 @@ menulist > menupopup > menuitem,
 menulist > menupopup > menuitem[selected="true"],
 .menulist-menupopup > menuitem[selected="true"] {
   list-style-image: url("chrome://global/skin/menu/menu-radio.gif");
+  -moz-image-region: auto;
 }
 
 menulist > menupopup > menuitem[_moz-menuactive="true"][selected="true"],
 .menulist-menupopup > menuitem[_moz-menuactive="true"][selected="true"] {
   list-style-image: url("chrome://global/skin/menu/menu-radio-hov.gif");
+  -moz-image-region: auto;
 }
 
 /* ::::: menuseparator ::::: */
@@ -227,4 +239,5 @@ menulist > menupopup > menuseparator,
 .treecell-popupcell-menu {
   margin-left: -2px;
   list-style-image: url("chrome://global/skin/columnselect.gif");
+  -moz-image-region: auto;
 }
diff --git a/mozilla/themes/classic/global/win/menu.css b/mozilla/themes/classic/global/win/menu.css
index 695a9b620ec..e8829c6db0e 100644
--- a/mozilla/themes/classic/global/win/menu.css
+++ b/mozilla/themes/classic/global/win/menu.css
@@ -36,6 +36,7 @@ menuitem {
   color: MenuText;
   font: menu;
   list-style-image: none;
+  -moz-image-region: auto;
 }
 
 menuitem[default="true"] {
@@ -81,14 +82,17 @@ menuitem[_moz-menuactive="true"][disabled="true"] {
   margin: 0px 0px 0px 6px;
   width: 8px;
   list-style-image: url("chrome://global/skin/menu/menu-arrow.gif");
+  -moz-image-region: auto;
 }
 
 .menu-right[_moz-menuactive="true"] {
   list-style-image: url("chrome://global/skin/menu/menu-arrow-hover.gif");
+  -moz-image-region: auto;
 }
 
 .menu-right[disabled="true"] {
   list-style-image: url("chrome://global/skin/menu/menu-arrow-disabled.gif") !important;
+  -moz-image-region: auto;
 }
 
 /* ::::: menu/menuitems in menubar ::::: */
@@ -171,28 +175,34 @@ menulist > menupopup > menuitem[_moz-menuactive="true"] {
 
 menuitem[checked="true"] {
   list-style-image: url("chrome://global/skin/menu/menu-check.gif");
+  -moz-image-region: auto;
 }
 
 menuitem[checked="true"][disabled="true"] {
   list-style-image: url("chrome://global/skin/menu/menu-check-disabled.gif");
+  -moz-image-region: auto;
 }
 
 menuitem[checked="true"][_moz-menuactive="true"] {
   list-style-image: url("chrome://global/skin/menu/menu-check-hover.gif");
+  -moz-image-region: auto;
 }
 
 /* ::::: radio menuitem ::::: */
 
 menuitem[checked="true"][type="radio"] {
   list-style-image: url("chrome://global/skin/menu/menu-radio.gif");
+  -moz-image-region: auto;
 }
 
 menuitem[checked="true"][type="radio"][disabled="true"] {
   list-style-image: url("chrome://global/skin/menu/menu-radio-disabled.gif");
+  -moz-image-region: auto;
 }
 
 menuitem[checked="true"][type="radio"][_moz-menuactive="true"] {
   list-style-image: url("chrome://global/skin/menu/menu-radio-hover.gif");
+  -moz-image-region: auto;
 }
 
 /* ::::: menuseparator ::::: */
@@ -222,4 +232,5 @@ menulist > menupopup > menuseparator,
 .treecell-popupcell-menu {
   margin-left: -2px;
   list-style-image: url("chrome://global/skin/columnselect.gif");
+  -moz-image-region: auto;
 }
diff --git a/mozilla/themes/modern/global/menu.css b/mozilla/themes/modern/global/menu.css
index 59ecdd0c3ca..8b3c32b7854 100644
--- a/mozilla/themes/modern/global/menu.css
+++ b/mozilla/themes/modern/global/menu.css
@@ -49,6 +49,7 @@ menuitem {
   color: #000000;
   font: menu;
   list-style-image: none;
+  -moz-image-region: auto;
 }
 
 menuitem[default="true"] {
@@ -95,14 +96,17 @@ menuitem[_moz-menuactive="true"][disabled="true"] {
   margin: 0px 0px 0px 6px;
   width: 8px;
   list-style-image: url("chrome://global/skin/menu/menu-arrow.gif");
+  -moz-image-region: auto;
 }
 
 .menu-right[_moz-menuactive="true"] {
   list-style-image: url("chrome://global/skin/menu/menu-arrow-hov.gif");
+  -moz-image-region: auto;
 }
 
 .menu-right[disabled="true"] {
   list-style-image: url("chrome://global/skin/menu/menu-arrow-dis.gif") !important;
+  -moz-image-region: auto;
 }
 
 /* ::::: menu/menuitems in menubar ::::: */
@@ -168,38 +172,46 @@ menulist > menupopup > menu {
 
 menulist > menupopup > menuitem[selected="true"] {
   list-style-image: url("chrome://global/skin/menu/menu-check.gif");
+  -moz-image-region: auto;
 }
   
 menulist > menupopup > menuitem[_moz-menuactive="true"][selected="true"] {
   list-style-image: url("chrome://global/skin/menu/menu-check-hov.gif");
+  -moz-image-region: auto;
 }
 
 /* ::::: checkbox menuitem ::::: */
 
 menuitem[checked="true"] {
   list-style-image: url("chrome://global/skin/menu/menu-check.gif");
+  -moz-image-region: auto;
 }
 
 menuitem[checked="true"][disabled="true"] {
   list-style-image: url("chrome://global/skin/menu/menu-check-dis.gif");
+  -moz-image-region: auto;
 }
 
 menuitem[checked="true"][_moz-menuactive="true"] {
   list-style-image: url("chrome://global/skin/menu/menu-check-hov.gif");
+  -moz-image-region: auto;
 }
 
 /* ::::: radio menuitem ::::: */
 
 menuitem[checked="true"][type="radio"] {
   list-style-image: url("chrome://global/skin/menu/menu-radio.gif");
+  -moz-image-region: auto;
 }
 
 menuitem[checked="true"][type="radio"][disabled="true"] {
   list-style-image: url("chrome://global/skin/menu/menu-radio-dis.gif");
+  -moz-image-region: auto;
 }
 
 menuitem[checked="true"][type="radio"][_moz-menuactive="true"] {
   list-style-image: url("chrome://global/skin/menu/menu-radio-hov.gif");
+  -moz-image-region: auto;
 }
 
 /* ::::: menuseparator ::::: */
@@ -229,4 +241,5 @@ menulist > menupopup > menuseparator,
 .treecell-popupcell-menu {
   margin-left: -2px;
   list-style-image: url("chrome://global/skin/tree/columnpicker.gif");
+  -moz-image-region: auto;
 }