var contentID;
// Request senden
function setRequest(url,contentId) {
	contentID = contentId;
	// Request erzeugen
	if (window.XMLHttpRequest) {
		request = new XMLHttpRequest(); // Mozilla, Safari, Opera
	} else if (window.ActiveXObject) {
		try {
			request = new ActiveXObject('Msxml2.XMLHTTP'); // IE 5
		} catch (e) {
			try {
				request = new ActiveXObject('Microsoft.XMLHTTP'); // IE 6
			} catch (e) {}
		}
	}

	// überprüfen, ob Request erzeugt wurde
	if (!request) {
		alert("Kann keine XMLHTTP-Instanz erzeugen");
		return false;
	} else {
		// Request öffnen
		request.open('post', url, true);
		// Requestheader senden
		request.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
		// Request senden
		request.send();
		
		// Request auswerten
		request.onreadystatechange = interpretRequest;
	}
    return true;
}

// Request auswerten
function interpretRequest() {
	switch (request.readyState) {
		// wenn der readyState 4 und der request.status 200 ist, dann ist alles korrekt gelaufen
		case 4:
			if (request.status != 200) {
				alert("Der Request wurde abgeschlossen, ist aber nicht OK\nFehler:"+request.status);
			} else {
				var content = request.responseText;

                // den Inhalt des Requests in das <div> schreiben
                if(contentID != "")
                    document.getElementById(contentID).innerHTML = content;
			}
			break;
		default:
			break;
	}
	return ;
}

function requestCommentaries() {
	var commentary_name = document.getElementById('commentary_name').value;
	var commentary_email = document.getElementById('commentary_email').value;
	var commentary_comment = document.getElementById('commentary_comment').value;
	var media_name = document.getElementById('media_name').value;
	var media_id = document.getElementById('media_id').value;
	
	var result = "commentary_name="+commentary_name+"&commentary_email="+commentary_email+"&commentary_comment="+commentary_comment+"&media_name="+media_name+"&media_id="+media_id+"&save_commentary=1";
	
	document.getElementById('commentary_name').value = '';
	document.getElementById('commentary_email').value = '';
	document.getElementById('commentary_comment').value = '';
	document.getElementById('media_name').value = '';
	document.getElementById('media_id').value = '';
	
	return result;
}