html, get http header values

html_get_http_header

// this works
function loadXMLDoc(url) {
if (window.XMLHttpRequest) {		// code for IE7+, Firefox, Chrome, Opera, Safari
  xmlhttp=new XMLHttpRequest();
} else {		// code for IE6, IE5
  xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");
}
xmlhttp.onreadystatechange = function() {
	if (xmlhttp.readyState == 4 && xmlhttp.status == 200) {
		console.log('X-report-address: ' + xmlhttp.getResponseHeader('X-report-address'));
	}
}
	xmlhttp.open("GET",url,true);
	xmlhttp.send();
}
loadXMLDoc('index.html');