diff -r 25b876619ca6 -r 1ea011ec1aa6 indra/newview/skins/default/xui/en/panel_navigation_bar.xml
--- a/indra/newview/skins/default/xui/en/panel_navigation_bar.xml	Fri Sep 09 12:43:07 2011 -0400
+++ b/indra/newview/skins/default/xui/en/panel_navigation_bar.xml	Tue Sep 13 18:41:15 2011 +0300
@@ -146,7 +146,8 @@
           border.highlight_light_color="FocusColor"
           border.highlight_dark_color="FocusColor"
           border.shadow_light_color="FocusColor"
-          border.shadow_dark_color="FocusColor"/>
+          border.shadow_dark_color="FocusColor"
+          mouse_wheel_opaque="true" />
         </search_combo_box>
 	</panel>
     <favorites_bar