How to resize iframe based on content

How to resize iframe based on content

http://www.456bereastreet.com/archive/201112/how_to_adjust_an_iframe_elements_height_to_fit_its_content/


<script type="text/javascript">
        
  function setIframeHeight(iframe) {
   if (iframe) {
    var iframeWin = iframe.contentWindow || iframe.contentDocument.parentWindow;
    if (iframeWin.document.body) {
     iframe.height = iframeWin.document.documentElement.scrollHeight || iframeWin.document.body.scrollHeight;
     if (iframeWin.document.body.children.namedItem('aspnetForm') != null) { // 'aspnetForm' is the main form's name
      iframe.height = iframeWin.document.body.children.namedItem('aspnetForm').offsetHeight;
     }
    }
   }
  };
</script>