diff --git a/browser/themes/pinstripe/browser/browser.css b/browser/themes/pinstripe/browser/browser.css
index 39f67aaf2379..34a8f7b42a8c 100644
--- a/browser/themes/pinstripe/browser/browser.css
+++ b/browser/themes/pinstripe/browser/browser.css
@@ -399,7 +399,6 @@ menubutton:not([disabled="true"]):hover:active {
   -moz-image-region: rect(23px, 36px, 46px, 0px);
 }
 #back-button:hover:active:not([disabled]),
-#back-button[buttondown="true"]:not([disabled]),
 #back-button[open="true"] {
   -moz-image-region: rect(46px, 36px, 69px, 0px);
 }
@@ -414,7 +413,6 @@ menubutton:not([disabled="true"]):hover:active {
   -moz-image-region: rect(23px, 72px, 46px, 36px);
 }
 #forward-button:hover:active:not([disabled]),
-#forward-button[buttondown="true"]:not([disabled]),
 #forward-button[open="true"] {
   -moz-image-region: rect(46px, 72px, 69px, 36px);
 }
diff --git a/toolkit/themes/gnomestripe/global/toolbarbutton.css b/toolkit/themes/gnomestripe/global/toolbarbutton.css
index ba3a09d1b513..15bc63549fa1 100644
--- a/toolkit/themes/gnomestripe/global/toolbarbutton.css
+++ b/toolkit/themes/gnomestripe/global/toolbarbutton.css
@@ -73,8 +73,7 @@ toolbarbutton.tabbable {
   -moz-user-focus: normal !important;
 }
 
-toolbarbutton:hover,
-toolbarbutton[buttonover="true"] {
+toolbarbutton:hover {
   border-color: ThreeDHighlight ThreeDShadow ThreeDShadow ThreeDHighlight;
   color: -moz-buttonhovertext;
 }
diff --git a/toolkit/themes/pinstripe/help/help.css b/toolkit/themes/pinstripe/help/help.css
index a3d2e187f2fe..04b7c7a2d3dc 100644
--- a/toolkit/themes/pinstripe/help/help.css
+++ b/toolkit/themes/pinstripe/help/help.css
@@ -92,44 +92,40 @@
 
 /* Style the back dropmark */
 
-#help-back-button .toolbarbutton-menubutton-dropmarker {
+#help-back-button > .toolbarbutton-menubutton-dropmarker {
   margin-top: 3px;
   list-style-image: url("chrome://global/skin/toolbar/dropmark-nav.png");
   -moz-image-region: rect(0px, 14px, 24px, 0px);
 }
 
-#help-back-button:hover .toolbarbutton-menubutton-dropmarker, 
-#help-back-button[buttonover="true"] > .toolbarbutton-menubutton-dropmarker {
+#help-back-button:hover > .toolbarbutton-menubutton-dropmarker {
   -moz-image-region: rect(24px, 14px, 48px, 0px);
 }
 
-#help-back-button[disabled="true"] .toolbarbutton-menubutton-dropmarker {
+#help-back-button[disabled="true"] > .toolbarbutton-menubutton-dropmarker {
   list-style-image: url("chrome://global/skin/toolbar/dropmark-nav.png") !important;
   -moz-image-region: rect(48px, 14px, 72px, 0px) !important;
 }
 
-#help-back-button:hover:active .toolbarbutton-menubutton-dropmarker, 
-#help-back-button[buttondown="true"] > .toolbarbutton-menubutton-dropmarker {
+#help-back-button:hover:active > .toolbarbutton-menubutton-dropmarker {
   -moz-image-region: rect(72px, 14px, 96px, 0px);
 }
 
 /* Style the forward dropmark */
 
-#help-forward-button .toolbarbutton-menubutton-dropmarker {
+#help-forward-button > .toolbarbutton-menubutton-dropmarker {
   margin-top: 3px;
   list-style-image: url("chrome://global/skin/toolbar/dropmark-nav.png");
   -moz-image-region: rect(0px, 14px, 24px, 0px);
 }
-#help-forward-button:hover .toolbarbutton-menubutton-dropmarker, 
-#help-forward-button[buttonover="true"] > .toolbarbutton-menubutton-dropmarker {
+#help-forward-button:hover > .toolbarbutton-menubutton-dropmarker {
   -moz-image-region: rect(24px, 14px, 48px, 0px);
 }
-#help-forward-button[disabled="true"] .toolbarbutton-menubutton-dropmarker {
+#help-forward-button[disabled="true"] > .toolbarbutton-menubutton-dropmarker {
   list-style-image: url("chrome://global/skin/toolbar/dropmark-nav.png") !important;
   -moz-image-region: rect(48px, 14px, 72px, 0px) !important;
 }
-#help-forward-button:hover:active .toolbarbutton-menubutton-dropmarker, 
-#help-forward-button[buttondown="true"] > .toolbarbutton-menubutton-dropmarker {
+#help-forward-button:hover:active > .toolbarbutton-menubutton-dropmarker {
   -moz-image-region: rect(72px, 14px, 96px, 0px);
 }
 
diff --git a/toolkit/themes/winstripe/global/toolbarbutton.css b/toolkit/themes/winstripe/global/toolbarbutton.css
index 274f03683408..8d722fd8cfb8 100644
--- a/toolkit/themes/winstripe/global/toolbarbutton.css
+++ b/toolkit/themes/winstripe/global/toolbarbutton.css
@@ -78,8 +78,7 @@ toolbarbutton:focus
   outline-offset: -2px;
 }
 
-toolbarbutton:hover:not([disabled="true"]),
-toolbarbutton[buttonover="true"] {
+toolbarbutton:hover:not([disabled="true"]) {
   border-color: ThreeDHighlight ThreeDShadow ThreeDShadow ThreeDHighlight;
 }