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679a8809c5
Differential Revision: https://phabricator.services.mozilla.com/D23037 --HG-- extra : moz-landing-system : lando
18 lines
285 B
HTML
18 lines
285 B
HTML
<html>
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<head>
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<style>
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body[fired] {
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background-color: #0f0;
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}
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</style>
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<script>
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window.onbeforeunload = function() {
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document.body.setAttribute("fired", true);
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return "Frame document prompt";
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};
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</script>
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</head>
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</body>
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FRAME
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</body>
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</html>
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