var ajax_http = null;
var id = null;

if (window.XMLHttpRequest) {
   ajax_http = new XMLHttpRequest();
} else if (window.ActiveXObject) {
   ajax_http = new ActiveXObject("Microsoft.XMLHTTP");
}

function ausgeben() {
   Element.hide('loading');
   if (ajax_http.readyState == 4) {
      document.getElementById("ajaxData").innerHTML = ajax_http.responseText;
      window.clearTimeout(id);
   }
}

function abbrechen() {
   ajax_http.abort();
   document.getElementById("ajaxData").innerHTML = "Die Anfrage dauerte zu lange. 10 Sekunden Timout erreicht.";
}