function maakXmlObj() {
      var xmlobj;
      try { xmlobj = new XMLHttpRequest() }
      catch(e) {
            try { xmlobj = new ActiveXObject("Microsoft.XMLHTTP") }
		catch(e) {}
      }
      return xmlobj;
}

function sendRequest(url,par) {
      var xmlobj = maakXmlObj();
      xmlobj.onreadystatechange=function() {
        if ((xmlobj.readyState==4) && (xmlobj.status==200)) {
          getResponse(xmlobj.responseText);
        }
      }
	  
      xmlobj.open('POST', url, true);
      xmlobj.setRequestHeader('Content-Type','application/x-www-form-urlencoded;charset=UTF-8');
      xmlobj.send(par);
}