function errorForm(err)
  {
    var error = getObj("error");
    error.innerHTML = err;
    show("error");
    window.scrollTo(0,0);
    return false;
  }
  
  function validForm()
  {
    //Mail
    var obj = getObj("email");
    if( obj != null && isMail(obj.value) )
      hide('error');
    else
      return errorForm("[CAN_ERROR_EMAIL]");
    
    //Prénom
    var obj = getObj("firstname");
    if( obj != null && obj.value != "" )
      hide('error');
    else
      return errorForm("[CAN_ERROR_FIRSTNAME]");
    
    //Nom
    var obj = getObj("lastname");
    if( obj != null && obj.value != "" )
      hide('error');
    else
      return errorForm("[CAN_ERROR_LASTNAME]");
    
    //Entreprise
    var obj = getObj("entreprise");
    if( obj != null && obj.value != "" )
      hide('error');
    else
      return errorForm("[CAN_ERROR_ENTREPRISE]");
    
    //Pays
    var obj = getObj("country");
    if( obj != null && obj.selectedIndex > 0 )
      hide('error');
    else
      return errorForm("[CAN_ERROR_COUNTRY]");

    return true;
  }