var http_request = false;
   
   function makeRequest(url, parameters) {
      http_request = false;
      if (window.XMLHttpRequest) { // Mozilla, Safari,...
         http_request = new XMLHttpRequest();
         if (http_request.overrideMimeType) {
         	// set type accordingly to anticipated content type
            //http_request.overrideMimeType('text/xml');
            http_request.overrideMimeType("text/html");
         }
      } else if (window.ActiveXObject) { // IE
         try {
            http_request = new ActiveXObject("Msxml2.XMLHTTP");
         } catch (e) {
            try {
               http_request = new ActiveXObject("Microsoft.XMLHTTP");
            } catch (e) {}
         }
      }
      if (!http_request) {
//         document.getElementById("budgetmailer").innerHTML = "<strong>Er is een fout opgetreden!<br /><br /></strong>";
         return false;
      }
      
      http_request.open('GET', url, true);
      http_request.send(parameters);
//      result = http_request.responseText;
//      document.getElementById('budgetmailer').innerHTML = "<strong>"+result+"<br /><br /></strong>";  
   }
   
   function budgetpost(sachternaam, semail, sNieuwsbrief, sform_id, sgroep) {
      var poststr = "achternaam=" + encodeURI(sachternaam) +
                    "&email=" + encodeURI(semail) +
                    "&form_action=" + encodeURI(sNieuwsbrief) +
                    "&form_id=" + encodeURI(sform_id) +
                    "&groep=" + encodeURI(sgroep);
      makeRequest('http://application.budgetmailer.com/subscribe.aspx', poststr);
   }