var reqDisasterTested = null;

function sendRequestDisasterTested(url, params, HttpMethod) {
  if (!HttpMethod) {
    HttpMethod = "GET";
  }
  reqDisasterTested = initXMLHTTPRequest();
  if (reqDisasterTested) {
    // this is to ensure that no caching is taking place
    url = url + "&seed=" + (new Date()).getTime();

    reqDisasterTested.onreadystatechange = onReadyStateDisasterTested;
    reqDisasterTested.open(HttpMethod, url, true);
    reqDisasterTested.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
    reqDisasterTested.send(params);
  }
}

function onReadyStateDisasterTested() {
  var ready = reqDisasterTested.readyState;
  var data = null;
  if (ready == READY_STATE_COMPLETE) {
    data = reqDisasterTested.responseText;
    var xmlDoc = reqDisasterTested.responseXML.documentElement;
    isEmpty = fillSelect(data, xmlDoc);
	
    // populate ff_dis_tested_year with a corresponding value
    updateDisasterTestedYear(); 

    if (isEmpty) {
      document.getElementById("displayTestedDisasterNumberValue").style.display = "none";
      document.getElementById("displayTestedDisasterNumberEmpty").style.display = "";
    }
    else {		
      document.getElementById("displayTestedDisasterNumberValue").style.display = "";
      document.getElementById("displayTestedDisasterNumberEmpty").style.display = "none";
    }
  }
}