diff --git a/theme/arialist/style/core.css b/theme/arialist/style/core.css
index f7c551f18ae..87037cfeae0 100644
--- a/theme/arialist/style/core.css
+++ b/theme/arialist/style/core.css
@@ -245,6 +245,21 @@ h2.headingblock {
     margin-top:30px;
 }
 
+/*YUI Reset */
+/*full menu bar */
+.yui3-skin-sam .yui3-menu-horizontal .yui3-menu-content {
+    background: none !important;
+}
+/*single items */
+.yui3-skin-sam .yui3-menu-horizontal .yui3-menu-label {
+    background: none !important;
+}
+/*active items */
+.yui3-skin-sam .yui3-menu-horizontal .yui3-menu-label-active, .yui3-skin-sam .yui3-menu-horizontal .yui3-menuitem-active .yui3-menuitem-content, .yui3-skin-sam .yui3-menu-horizontal .yui3-menu-label-menuvisible {
+    background: #f9f9f9 !important;
+    border-color:inherit;
+}
+
 #custommenu .yui3-menu-horizontal,
 #custommenu .yui3-menu-horizontal.javascript-disabled {
     padding-left:100px;
@@ -302,6 +317,6 @@ h2.headingblock {
 }
 
 #custommenu .yui3-menu-horizontal.javascript-disabled .yui3-menu-content li li:hover,
-.yui3-skin-sam #custommenu .yui3-menu .yui3-menuitem.yui3-menuitem-active .yui3-menuitem-content {
-    background-color:#FFF;
+.yui3-skin-sam #custommenu .yui3-menu .custom_menu_submenu .yui3-menuitem.yui3-menuitem-active .yui3-menuitem-content, #custommenu .yui3-menu-horizontal .custom_menu_submenu .yui3-menu-content .yui3-menu-label-active {
+    background-color:#FFF !important;
 }
\ No newline at end of file