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Test Info:
<!DOCTYPE html>
<html class="reftest-wait">
<head>
<meta charset="utf-8">
<title>CSS Masking: mask invalidation.</title>
<style type="text/css">
div.outer {
position: absolute;
background-color: purple;
border: solid purple;
width: 200px;
height: 200px;
}
div.mask {
mask-image: url(#m1);
}
</style>
</head>
<body>
<div id="d1" class="outer mask"></div>
<script type="text/javascript">
function changeMask()
{
document.getElementById("r1").setAttribute("width", "50");
document.getElementById("r1").setAttribute("height", "50");
document.getElementById("r1").setAttribute("x", "100");
document.getElementById("r1").setAttribute("y", "100");
document.documentElement.removeAttribute("class");
}
document.addEventListener("MozReftestInvalidate",
changeMask);
</script>
<svg height="0">
<mask id="m1" x="0" y="0" width="1" height="1">
<rect id="r1" x="50" y="50" width="100" height="100" style="stroke:none; fill: #ffffff;"/>
</mask>
</svg>
</body>
</html>