<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<bindings xmlns="http://www.mozilla.org/xbl">
<binding id="x"><content><SPAN>2!<children xmlns="http://www.mozilla.org/xbl"/></SPAN></content></binding>
<binding id="y"><content></content></binding>
</bindings>
<script type="text/javascript">
function boom()
{
document.getElementById("a").style.MozBinding = 'url("#y")';
}
</script>
</head>
<body dir="rtl" onload="boom();"><div style="-moz-binding: url(#x);"><span style="unicode-bidi: bidi-override;" id="a"></span></div></body>
</html>