Bug 388112, fix test by adding offset properly, r=mano

toolkit/content/tests/chrome/window_largemenu.xul

@@ -78,15 +78,15 @@ function popupShown()
     // the popup was supposed to open 100 pixels from the bottom, but that
     // would put it off screen so it should be flipped to have its bottom
     // edge 100 pixels from the bottom
-    ok(Math.round(rect.top) >= screen.top, gTests[gTestIndex] + " top");
+    ok(Math.round(rect.top) + gScreenY >= screen.top, gTests[gTestIndex] + " top");
     is(Math.round(rect.bottom) + gScreenY, screen.height - 100,
                                 gTests[gTestIndex] + " bottom");
     ok(!gOverflowed && !gUnderflowed, gTests[gTestIndex] + " overflow")
   }
   else if (gTestIndex == 2) {
     // the popup is too large so ensure that it is on screen
-    window.opener.wrappedJSObject.SimpleTest.todo(Math.round(rect.top) >= screen.top, gTests[gTestIndex] + " top");
-    ok(Math.round(rect.bottom) < screen.height, gTests[gTestIndex] + " bottom");
+    ok(Math.round(rect.top) + gScreenY >= screen.top, gTests[gTestIndex] + " top");
+    ok(Math.round(rect.bottom) + gScreenY < screen.height, gTests[gTestIndex] + " bottom");
     ok(gOverflowed && !gUnderflowed, gTests[gTestIndex] + " overflow")
   }
   else if (gTestIndex == 3) {