function doRequest(ausgabeskript,skriptadresse,variablen){
http_request = false;	
if (window.XMLHttpRequest){ http_request = new XMLHttpRequest();}else if(window.ActiveXObject){try{http_request = new ActiveXObject("Msxml2.XMLHTTP");}catch (e){try{http_request = new ActiveXObject("Microsoft.XMLHTTP");}catch(e){}}}if (http_request.overrideMimeType){http_request.overrideMimeType('text/xml');} var zeit = new Date(); var uid = zeit.getHours()+zeit.getMinutes()+zeit.getSeconds()+zeit.getMilliseconds(); 
http_request.onreadystatechange = eval(ausgabeskript);
http_request.open('POST',skriptadresse, true);
http_request.setRequestHeader('Content-Type','application/x-www-form-urlencoded');
vars = "uid="+uid;
vars += "&"+variablen;
http_request.send(vars);
}
function checkRequest(){
if (http_request.readyState == 4) {
if (http_request.status == 200) {
return true;
}
}
}
function closeExtMeldung(){
document.getElementById('nwsoverlay').style.display = "none";	
document.getElementById('extmeldung').innerHTML = '<img src="global/images/warteschleife/wait.gif" id="waiter" width="400" height="400" alt="Einen Moment bitte..." />';
}