Bug 306437. change event fires twice for HTML select (mousedown & mouseup). r=dbaron, sr=neil, a=schrep

git-svn-id: svn://10.0.0.236/branches/MOZILLA_1_8_BRANCH@179692 18797224-902f-48f8-a5cc-f745e15eee43

mozilla/layout/forms/nsListControlFrame.cpp

@@ -2785,9 +2785,11 @@ nsListControlFrame::MouseDown(nsIDOMEvent* aMouseEvent)
     // Handle Like List
     CaptureMouseEvents(GetPresContext(), PR_TRUE);
     mChangesSinceDragStart = HandleListSelection(aMouseEvent, selectedIndex);
+#ifdef ACCESSIBILITY
     if (mChangesSinceDragStart) {
-      UpdateSelection(); // dispatch event, update combobox, etc.
+      FireMenuItemActiveEvent();
     }
+#endif
   } else {
     // NOTE: the combo box is responsible for dropping it down
     if (mComboboxFrame) {