<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>pseudo double SetInitialChildlist</title>
<style>
.cat::-moz-table-row-group { overflow: scroll;}
tr { position: absolute;}
</style>
</head>
<body>
<div class="cat" style="display:table">
<div style="display:block">
<div style="display:table-cell">Cell</div>
</div>
</div>
</body>
</html>