var load_request = false;


function load (url,div) {

	document.getElementById(div).innerHTML = "Daten werden geladen ...";

	load_request = false;

	if (window.XMLHttpRequest) { // Mozilla, Safari,...
		load_request = new XMLHttpRequest();
		if (load_request.overrideMimeType) {
			load_request.overrideMimeType('text/xml');
		}
	} else if (window.ActiveXObject) { // IE
		try {
			load_request = new ActiveXObject("Msxml2.XMLHTTP");
		} catch (e) {
			try {
				load_request = new ActiveXObject("Microsoft.XMLHTTP");
  			} catch (e) {}
		}
	}
 
	if (!load_request) {
		alert('Ende :( Kann keine XMLHTTP-Instanz erzeugen');
		return false;
	}

	load_request.open('GET', url, true);
	load_request.setRequestHeader("Pragma", "no-cache");
	load_request.setRequestHeader("Cache-Control", "must-revalidate");
	load_request.setRequestHeader("If-Modified-Since", document.lastModified);
	load_request.onreadystatechange = function() {
		alertInhalt(div);
	};
	load_request.send(null);
 
}
 
function alertInhalt(div) {
	if (load_request.readyState == 4) {
		var answer = load_request.responseText;
		if(document.getElementById(div).innerHTML != answer){
			document.getElementById(div).innerHTML = answer;
		} else {
			document.getElementById(div).innerHTML = "";
		}
	}
}