function post_login(){
  //Validation des donn�es
    form_config = [{"input_id":"login_type","label":"Type d'utilisateur","mandatory":true,"data_type":"varchar","nb_char":25},{"input_id":"login_code","label":"Code d'utilisateur","mandatory":true,"data_type":"varchar","nb_char":255},{"input_id":"login_pass","label":"Mot de passe","mandatory":true,"data_type":"varchar","nb_char":80}]  
  if(form_validation(form_config)){
    document.getElementById('fr_login').method='post';
    document.getElementById('fr_login').action='post_login.php';
    document.getElementById('fr_login').target='_top';
    document.getElementById('fr_login').submit();
  } 
}