var http_request = false;
 var id_obj;

   function makeRequest(url, parameters, obj_mr) {
      http_request = false;
      id_obj = obj_mr;
      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) {
         alert('Cannot create XMLHTTP instance');
         return false;
      }
      http_request.onreadystatechange = displayContents;
      http_request.open('GET', url + parameters, true);
      http_request.setRequestHeader("If-Modified-Since", "Thu, 1 Jan 1970 00:00:00 GMT");
      http_request.setRequestHeader("Cache-Control", "no-cache");
      http_request.send(null);
   }

   function displayContents() {
      if (http_request.readyState == 4) {
         if (http_request.status == 200) {
            result = http_request.responseText;
            document.getElementById(id_obj).innerHTML = result;
         } else {
            document.getElementById(id_obj).innerHTML = '';
         }
      }
   }

function get(obj, lang) {
  var getstr = "?";
  for (i=0; i<obj.getElementsByTagName("input").length; i++) {
        if (obj.getElementsByTagName("input")[i].type == "text") {
           getstr += obj.getElementsByTagName("input")[i].name + "=" + 
                   obj.getElementsByTagName("input")[i].value + "&";
        }
        if (obj.getElementsByTagName("input")[i].type == "checkbox") {
           if (obj.getElementsByTagName("input")[i].checked) {
              getstr += obj.getElementsByTagName("input")[i].name + "=" + 
                   obj.getElementsByTagName("input")[i].value + "&";
           } else {
              getstr += obj.getElementsByTagName("input")[i].name + "=&";
           }
        }     
  }
  if (lang == 1) {
   makeRequest('/ajax/get_search_nl.php', getstr, 'searchresults');
  } else if (lang == 2) {
   makeRequest('/ajax/get_search_eng.php', getstr, 'searchresults');
 }
}