--- a/browser/themes/winstripe/browser/browser.css
+++ b/browser/themes/winstripe/browser/browser.css
@@ -1274,59 +1274,47 @@ richlistitem[type="action"][actiontype="
 
   .tabs-newtab-button {
     min-width: 1cm;
   }
 }
 
 .tabbrowser-arrowscrollbox > .scrollbutton-up,
 .tabbrowser-arrowscrollbox > .scrollbutton-down {
+  list-style-image: url("chrome://browser/skin/tabbrowser/tab-arrow-left.png");
   -moz-image-region: rect(0, 15px, 17px, 0);
   margin: 0;
   padding-top: 0;
   padding-bottom: 0;
 }
 
-.tabbrowser-arrowscrollbox > .scrollbutton-up:not([disabled="true"]):hover,
-.tabbrowser-arrowscrollbox > .scrollbutton-down:not([disabled="true"]):hover {
-  -moz-image-region: rect(0, 30px, 17px, 15px);
-}
-
 .tabbrowser-arrowscrollbox > .scrollbutton-up[disabled="true"],
 .tabbrowser-arrowscrollbox > .scrollbutton-down[disabled="true"] {
   opacity: .4;
 }
 
 .tabbrowser-arrowscrollbox > .scrollbutton-up:not([disabled="true"]):hover:active,
 .tabbrowser-arrowscrollbox > .scrollbutton-down:not([disabled="true"]):hover:active {
-  -moz-image-region: rect(0, 45px, 17px, 30px);
+  -moz-image-region: rect(0, 30px, 17px, 15px);
 }
 
-.tabbrowser-arrowscrollbox > .scrollbutton-up:-moz-locale-dir(ltr) {
-  list-style-image: url("chrome://browser/skin/tabbrowser/tab-arrow-left.png");
-}
-
-.tabbrowser-arrowscrollbox > .scrollbutton-up:-moz-locale-dir(rtl) {
-  list-style-image: url("chrome://browser/skin/tabbrowser/tab-arrow-right.png");
+.tabbrowser-arrowscrollbox > .scrollbutton-up:-moz-locale-dir(rtl) > .toolbarbutton-icon,
+.tabbrowser-arrowscrollbox > .scrollbutton-down:-moz-locale-dir(ltr) > .toolbarbutton-icon {
+  -moz-transform: scaleX(-1);
 }
 
 .tabbrowser-arrowscrollbox > .scrollbutton-down {
-  list-style-image: url("chrome://browser/skin/tabbrowser/tab-arrow-right.png");
   -moz-transition: 1s background-color ease-out;
 }
 
 .tabbrowser-arrowscrollbox > .scrollbutton-down[notifybgtab] {
   background-color: Highlight;
   -moz-transition: none;
 }
 
-.tabbrowser-arrowscrollbox > .scrollbutton-down:-moz-locale-dir(rtl) {
-  list-style-image: url("chrome://browser/skin/tabbrowser/tab-arrow-left.png");
-}
-
 .tabs-newtab-button > .toolbarbutton-icon,
 #TabsToolbar > #new-tab-button > .toolbarbutton-icon,
 #TabsToolbar > toolbarpaletteitem > #new-tab-button > .toolbarbutton-icon,
 #alltabs-button > .toolbarbutton-icon {
   width: auto;
   height: auto;
 }
 

--- a/browser/themes/winstripe/browser/jar.mn
+++ b/browser/themes/winstripe/browser/jar.mn
@@ -78,17 +78,16 @@ browser.jar:
         skin/classic/browser/preferences/preferences.css             (preferences/preferences.css)
         skin/classic/browser/preferences/applications.css            (preferences/applications.css)
         skin/classic/browser/tabbrowser/alltabs.png                             (tabbrowser/alltabs.png)
         skin/classic/browser/tabbrowser/newtab.png                              (tabbrowser/newtab.png)
         skin/classic/browser/tabbrowser/progress.png                            (tabbrowser/progress.png)
         skin/classic/browser/tabbrowser/progress-pulsing.png                    (tabbrowser/progress-pulsing.png)
         skin/classic/browser/tabbrowser/tab.png                                 (tabbrowser/tab.png)
         skin/classic/browser/tabbrowser/tab-arrow-left.png                      (tabbrowser/tab-arrow-left.png)
-        skin/classic/browser/tabbrowser/tab-arrow-right.png                     (tabbrowser/tab-arrow-right.png)
         skin/classic/browser/tabbrowser/tabDragIndicator.png                    (tabbrowser/tabDragIndicator.png)
 
 #ifdef XP_WIN
 browser.jar:
 % skin browser classic/1.0 %skin/classic/aero/browser/ os=WINNT osversion>=6
         skin/classic/aero/browser/sanitizeDialog.css                       (sanitizeDialog.css)
 *       skin/classic/aero/browser/aboutPrivateBrowsing.css           (aboutPrivateBrowsing.css)
 *       skin/classic/aero/browser/aboutSessionRestore.css            (aboutSessionRestore.css)
@@ -166,11 +165,10 @@ browser.jar:
         skin/classic/aero/browser/preferences/preferences.css        (preferences/preferences.css)
         skin/classic/aero/browser/preferences/applications.css       (preferences/applications.css)
         skin/classic/aero/browser/tabbrowser/alltabs.png                        (tabbrowser/alltabs.png)
         skin/classic/aero/browser/tabbrowser/newtab.png                         (tabbrowser/newtab.png)
         skin/classic/aero/browser/tabbrowser/progress.png                       (tabbrowser/progress.png)
         skin/classic/aero/browser/tabbrowser/progress-pulsing.png               (tabbrowser/progress-pulsing.png)
         skin/classic/aero/browser/tabbrowser/tab.png                            (tabbrowser/tab.png)
         skin/classic/aero/browser/tabbrowser/tab-arrow-left.png                 (tabbrowser/tab-arrow-left.png)
-        skin/classic/aero/browser/tabbrowser/tab-arrow-right.png                (tabbrowser/tab-arrow-right.png)
         skin/classic/aero/browser/tabbrowser/tabDragIndicator.png               (tabbrowser/tabDragIndicator.png)
 #endif

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