<!doctype html>
<html>
<head>
<meta charset="utf-8">
<title>iframe3</title>
</head>
<body>
<h1>iframe3</h1>
<script src="../get-size.js"></script>
<script>
window.onload = function() {
getSize( document.querySelector('h1') );
};
</script>
</body>
</html>