function ajax(url) {
  var jsel = document.createElement('SCRIPT');
  jsel.type = 'text/javascript';
  jsel.src = url;
  document.body.appendChild(jsel);
}

function ajaxGetModels(id) {
  if(id == 0) {
    alert('Niste izabrali proizvodjaca vozila.');
    return;
  }
  
  document.getElementById('model_list').innerHTML = "<span class='plavifb'>Učitavanje u toku ...</span>";
  
  var page = 'ajax_model.php?mnf=' + id;
  ajax(page);
}

function ajaxGetModelsByVehType(veh_type, id) {
  if(id == 0) {
    alert('Niste izabrali proizvodjaca vozila.');
    return;
  }
  
  var veh_name = Array();
  veh_name[1] = 'auto';
  veh_name[2] = 'moto';
  veh_name[3] = 'kamioni';
  veh_name[4] = 'priv_masine';
  veh_name[5] = 'nautika';
  veh_name[6] = 'autobusi';
  veh_name[7] = 'delovi';
  
  document.getElementById('models_list_' + veh_name[veh_type]).innerHTML = "<span class='plavifb'>Učitavanje u toku ...</span>";
  
  var page = 'ajax_model_np.php?veh_type=' + veh_type + '&mnf=' + id;
  ajax(page);
}