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<!DOCTYPE html>
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<html>
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<head>
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<meta charset="UTF-8">
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<script>
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function boom()
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{
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var frameWin = document.getElementById("f").contentWindow;
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Object.create(frameWin).self;
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}
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</script>
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</head>
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<body onload="boom()">
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<iframe id="f" src="data:text/html,3"></iframe>
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</body>
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</html>
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