diff --git a/widget/src/os2/nsWindow.cpp b/widget/src/os2/nsWindow.cpp
index a3650669db1..4ec674c8d01 100644
--- a/widget/src/os2/nsWindow.cpp
+++ b/widget/src/os2/nsWindow.cpp
@@ -2228,6 +2228,21 @@ BOOL nsWindow::NotifyForeignChildWindows(HWND aWnd)
   return WinEndEnumWindows(hEnum);
 }
 
+//-------------------------------------------------------------------------
+//
+// Force a resize of child windows after a scroll to reset hover positions.
+//
+//-------------------------------------------------------------------------
+void nsWindow::ScrollChildWindows(PRInt32 aX, PRInt32 aY)
+{
+  nsIWidget *child = GetFirstChild();
+  while (child) {
+    nsRect rect;
+    child->GetBounds(rect);
+    child->Resize(rect.x + aX, rect.y + aY, rect.width, rect.height, PR_FALSE);
+    child = child->GetNextSibling();
+  }
+}
 //-------------------------------------------------------------------------
 //
 // Scroll the bits of a window
@@ -2244,19 +2259,20 @@ NS_METHOD nsWindow::Scroll(PRInt32 aDx, PRInt32 aDy, nsRect *aClipRect)
     rcl.yBottom = aClipRect->y + aClipRect->height;
     rcl.xRight = rcl.xLeft + aClipRect->width;
     rcl.yTop = rcl.yBottom + aClipRect->height;
-    NS2PM( rcl);
+    NS2PM(rcl);
     // this rect is inex
   }
 
-    // this prevents screen corruption while scrolling during a
-    // Moz-originated drag - during a native drag, the screen
-    // isn't updated until the drag ends. so there's no corruption
+  // this prevents screen corruption while scrolling during a
+  // Moz-originated drag - during a native drag, the screen
+  // isn't updated until the drag ends. so there's no corruption
   HPS hps = 0;
   CheckDragStatus(ACTION_SCROLL, &hps);
 
   NotifyForeignChildWindows(mWnd);
-  WinScrollWindow( mWnd, aDx, -aDy, aClipRect ? &rcl : 0, 0, 0,
-                   0, SW_SCROLLCHILDREN | SW_INVALIDATERGN);
+  WinScrollWindow(mWnd, aDx, -aDy, aClipRect ? &rcl : 0, 0, 0,
+                  0, SW_SCROLLCHILDREN | SW_INVALIDATERGN);
+  ScrollChildWindows(aDx, aDy);
   Update();
 
   if (hps)
diff --git a/widget/src/os2/nsWindow.h b/widget/src/os2/nsWindow.h
index 8549a6fb409..ebcd7ad4aac 100644
--- a/widget/src/os2/nsWindow.h
+++ b/widget/src/os2/nsWindow.h
@@ -331,6 +331,7 @@ protected:
                                   PRUint32 aWidth, PRUint32 aHeight);
 
    BOOL NotifyForeignChildWindows(HWND aWnd);
+   void ScrollChildWindows(PRInt32 aX, PRInt32 aY);
 
    // Enumeration of the methods which are accessible on the PM thread
    enum {