var script = window.document.createElement('script');
script.src = '/path/to/form.js';
script.async = false;
$('body').append(script);$('body').append('<script type="text/javascript" src="script/Forms.js"></script>');<html>
<body>
<iframe src='index.html' id='frame'></iframe>
<script type='text/javascript'>
document.getElementById("frame").onload = function () {
var FRAM = document.getElementById("frame");
var DOC = FRAM.contentDocument;
alert(FRAM.contentDocument.body);
}
</script>
</body>
</html>