I made example showing how it should be done: #include <ie.au3> #include <Timers.au3> _Example() Func _Example() ;~ http://www.aaronpeters.nl/blog/iframe-loading-techniques-performance?%3E ;~ Local $oIE = _IECreate('http://www.aaronpeters.nl/blog/testpages/iframe-dynamic-after-onload.htm', 0, 1, 0) ;~ Local $oIE = _IECreate('http://www.aaronpeters.nl/blog/testpages/iframe-dynamic-asynch.htm', 0, 1, 0) Local $oIE