21 lines
423 B
HTML
21 lines
423 B
HTML
<html>
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<head>
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<script>
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function boom()
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{
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window.addEventListener("DOMSubtreeModified", function(){}, false);
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var m = document.createElementNS("http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul", "menuitem");
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document.body.appendChild(m);
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m.setAttribute("type", "checkbox");
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m.setAttribute("checked", "true");
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m.removeAttribute("type");
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}
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</script>
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</head>
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<body onload="boom();"></body>
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</html>
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