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<!DOCTYPE HTML>
<html>
<head>
<title>Bug 1089417</title>
<style>
html { background: red }
@media (min-height: 300px) { html { background: green } }
</style>
<style id="s">/* empty */</style>
<script>
document.getElementById("s").disabled = true;
</script>
</head>
<body>
</body>
</html>