function createRequestObject() {

   var req;

   if(window.XMLHttpRequest){
      req = new XMLHttpRequest();
   } else if(window.ActiveXObject) {
      req = new ActiveXObject("Microsoft.XMLHTTP");
   } else {
      alert('Problem creating the XMLHttpRequest object');
   }

   return req;

}

var http = createRequestObject();

function domeincheck(wat) {
   http.open('get', 'whois.php?d='+wat);
   document.getElementById('loadingimage').innerHTML = '<img src="img/progress.gif" alt="loading" />';
   http.onreadystatechange = handleResponseTest;
   http.send(null);
}