function erzXMLHttpRequestObject() {
 var resObject = null;
 try {
  resObject = new ActiveXObject("Microsoft.XMLHTTP");
 }
 catch(Error) {
  try {
   resObject = new ActiveXObject("MSXML2.XMLHTTP");
   }
  catch(Error) {
   try {
    resObject = new XMLHttpRequest();
    }
   catch(Error) {
   alert("Erzeugen von XMLHttpRequest Object Fehlgeschlagen .. cest la vie");
   }
  }
 }
return resObject;
}
var resObject = erzXMLHttpRequestObject();
function chkmail(was) {
 resObject.open('get', 'http://www.wirsinddiefeuerwehr.de/c.php/?email='+ was ,true);
 resObject.onreadystatechange = printSearchResult;
 resObject.send(null);
}
function printSearchResult() {
 if (resObject.readyState == 4) {
 document.getElementById("mailvalid").innerHTML = resObject.responseText;
 }
}