Как отучить окно с IE перехватывать события дочерних окон?

#Include <IE.au3>
#include <GUIConstantsEx.au3>
#include <WindowsConstants.au3>

$Form1 = GUICreate("Form1", 600, 400, -1, -1)
$oIE = ObjCreate("Shell.Explorer.2")
$hiE = GUICtrlCreateObj($oIE, 2, 2, 596, 396)
GUISetState(@SW_SHOW)

_IENavigate($oIE, 'http://ya.ru')
_IENavigate($oIE, 'http://google.com')

$Form2 = GUICreate("Form2", 170, 60, -1, -1, $WS_POPUP, $WS_EX_DLGMODALFRAME, $Form1)
GUISwitch($Form2)
$Input1 = GUICtrlCreateInput("Нажмите 'BACKSPACE'", 16, 20, 133, 21)
GUISetState(@SW_SHOW)
; GUISetState(@SW_DISABLE, $Form1)

While 1
	$nMsg = GUIGetMsg()
	Switch $nMsg
		Case $GUI_EVENT_CLOSE
			Exit
	EndSwitch
WEnd

#Include <IE.au3>
#include <GUIConstantsEx.au3>
#include <WindowsConstants.au3>

$Form2 = GUICreate("Form2", 170, 60, -1, -1, $WS_POPUP, $WS_EX_DLGMODALFRAME)
$Input1 = GUICtrlCreateInput("Нажмите 'BACKSPACE'", 16, 20, 133, 21)

$Form1 = GUICreate("Form1", 600, 400, -1, -1)
$oIE = ObjCreate("Shell.Explorer.2")
$hiE = GUICtrlCreateObj($oIE, 2, 2, 596, 396)
GUISetState(@SW_SHOW,$Form1)

_IENavigate($oIE, 'http://ya.ru')
_IENavigate($oIE, 'http://google.com')

GUISetState(@SW_SHOW,$Form2)

While 1
    $nMsg = GUIGetMsg()
    Switch $nMsg
        Case $GUI_EVENT_CLOSE
            Exit
    EndSwitch
WEnd