chrome/test/data/popup_blocker/popup-on-unload.html - chromium/src - Git at Google

 <html>
 <head>
 <title>Popup created using window.open</title>
 <script>
 function popup() {
   window.open("popup-success.html",
   "_blank", "menubar=1, resizable=1, width=350, height=250");
 }

 </script>
 </head>
 <body onunload="popup()">
 pop-up test page
 </body>
 </html>
	<html>
	<head>
	<title>Popup created using window.open</title>
	<script>
	function popup() {
	window.open("popup-success.html",
	"_blank", "menubar=1, resizable=1, width=350, height=250");
	}

	</script>
	</head>
	<body onunload="popup()">
	pop-up test page
	</body>
	</html>