Enter iFrameSrc url param with full url to test-load<br>
<DIV style="margin:2em;">
<script>
// thanks to https://stackoverflow.com/questions/831030/how-to-get-get-request-parameters-in-javascript
function param(name){
   if(name=(new RegExp('[?&]'+encodeURIComponent(name)+'=([^&]*)')).exec(location.search))
      return decodeURIComponent(name[1]);
}
var iFrameSrc = param('iFrameSrc');
if (iFrameSrc) {
    document.write( '<IFRAME src="'+iFrameSrc+'" height=400 width="80%" ></IFRAME>' );
} else {
    document.write( 'iFrameSrc not found' );
}
</script>
</DIV>