ADD THIS CODE TO THE HEAD SECTION OF THE TEMPLATE!

<script language="javascript" type="text/javascript">
  function resizeIframe(obj) {
    obj.style.height = obj.contentWindow.document.body.scrollHeight + 'px';
  }
</script>


ADD THIS CODE WHEREVER YOU WANT THE API TO GO

<IFRAME SRC="https://www.psychic.com.au/apiproxy.php" width="100%" height="100%" id="iframe1" marginheight="0" frameborder="0" onLoad="autoResize('iframe1');"></iframe>

SEE: https://www.psychic.com.au/test.html for an example