<!DOCTYPE HTML> <html> <body> frame A<br/> <iframe name='frameB' src="http://example.com/tests/dom/security/test/csp/file_windowwatcher_subframeB.html"></iframe> <iframe name='frameC' src="http://example.com/tests/dom/security/test/csp/file_windowwatcher_subframeC.html"></iframe> <iframe name='frameD' src="http://example.com/tests/dom/security/test/csp/file_windowwatcher_subframeD.html"></iframe> <script class="testbody" type="text/javascript"> window.onload = function() { frameB.openWin(); } </script> </body> </html>