<!DOCTYPE html>
<html>
<head>
	<meta charset="utf-8">
	<style>
		#test {
			-webkit-box-sizing: border-box;
			-moz-box-sizing: border-box;
			box-sizing: border-box;
			width: 100px;
			height: 100px;
			padding: 10px;
		}
	</style>
</head>
<body>
<div id="test"></div>
<script src="../../jquery.js"></script>
<script>
	window.parent.iframeCallback( jQuery( "#test" ).css( 'width' ) );
</script>
</body>
</html>
