function change_country(select) {
   var country = select.form.elements['country'];
   var region  = select.form.elements['region'];
   if (select.value==msg_other) {
      country.value = '';
      country.style.display = '';
   }
   else {
      country.value = select.value;
      country.style.display = 'none';
   }
   region.style.display = select.selectedIndex==1 ? '' : 'none';
   region.selectedIndex = 0;
}



function change_fields_of_competences(select) {
   var fields_of_competences = select.form.elements['fields_of_competences'];
   if (select.value==msg_other) {
      fields_of_competences.value = '';
      fields_of_competences.style.display = 'block';
   }
   else {
      fields_of_competences.value = select.value;
      fields_of_competences.style.display = 'none';
   }
}