[wvxvw]

var xml:XML =
<foo>
	<bar valid="1"/>
	<bar valid="1"/>
	<bar valid="1"/>
	<bar/>
	<bar valid="1"/>
	<bar/>
	<bar valid="1"/>
</foo>;
 
xml.*.(attribute("valid").length() ? true : parent().replace(childIndex(), ""));
xml.normalize();
trace(xml.toXMLString());