function getCities(region){
	if (region == '')
	{
		document.getElementById('ajax_city').innerHTML = "<select class='sb' name='f103' disabled=true> <option selected value=''>Ilce Seciniz</option> </select>"
		return false;
	}
	var xml = createRequest();
	xml.open("GET","/get_cities_by_region.php?region="+region, false);
	xml.send(null);
	document.getElementById('ajax_city').innerHTML = xml.responseText;
}

function createRequest() {
  var request = null;
  try {
    request = new XMLHttpRequest();
  } catch (trymicrosoft) {
    try {
      request = new ActiveXObject("Msxml2.XMLHTTP");
    } catch (othermicrosoft) {
      try {
        request = new ActiveXObject("Microsoft.XMLHTTP");
      } catch (failed) {
        request = null;
      }
    }
  }

  if (request == null) {
    alert("Error creating request object!");
  } else {
    return request;
  }
}