var http_request = false;
var http_request_image = false;

function requestComment(url) {

	http_request = false;

    if (window.XMLHttpRequest) { // Mozilla, Safari,...
        http_request = new XMLHttpRequest();
        if (http_request.overrideMimeType) {
            http_request.overrideMimeType('text/xml');
            // zu dieser Zeile siehe weiter unten
        }
    } else if (window.ActiveXObject) { // IE
        try {
            http_request = new ActiveXObject("Msxml2.XMLHTTP");
        } catch (e) {
            try {
                http_request = new ActiveXObject("Microsoft.XMLHTTP");
            } catch (e) {}
        }
    }

    if (!http_request) {
        alert('Ende :( Kann keine XMLHTTP-Instanz erzeugen');
        return false;
    }

    http_request.onreadystatechange = changeComment;
    http_request.open('GET', url, true);
    http_request.send(null);

}

function changeComment(){
	if (http_request.readyState == 4) {
        if (http_request.status == 200) {
			document.getElementById('comment_input').innerHTML = http_request.responseText;
        } else {
            alert('Bei dem Request ist ein Problem aufgetreten.');
        }
    }
}

function saveComment(){

	comment_text = document.getElementById('comment_txt').value;
	comment_name = document.getElementById('comment_name').value;
	entry_id = document.getElementById('entry_id').value;
	ruhuman = document.getElementById('ruhuman').value;

	requestComment('comment.php?eid=' + entry_id + '&name=' + comment_name + '&text=' + comment_text + '&ruhuman=' + ruhuman);

}