function calcul_frais_broker(nbr)
{
var nbr = nbr.value;
var broker_taxe_min_2 = broker_taxe_min;
var broker_taxe_max_2 = broker_taxe_max;
var broker_palier_2 = broker_palier;
var broker_frais_2 = broker_frais;
var prix_ht = prix;
var prix_total_ht = prix_ht*nbr;

if (prix_total_ht < broker_palier_2) {
prix_ttc = prix_total_ht+broker_taxe_min_2;
total_frais = prix_ttc;
}
else if (prix_total_ht > broker_palier_2) {
prix_ttc = prix_total_ht+(prix_total_ht*broker_taxe_max_2);
total_frais = prix_ttc;
}
if (total_frais < broker_frais_2) {
prix_ttc = total_frais+broker_frais_2;
}
document.getElementById("prix").innerHTML = prix_ttc;
}

function calcul_frais_broker_vente(nbr)
{
var nbr = nbr.value;
var broker_taxe_min_2 = broker_taxe_min;
var broker_taxe_max_2 = broker_taxe_max;
var broker_palier_2 = broker_palier;
var broker_frais_2 = broker_frais;
var prix_ht = prix;
var prix_total_ht = prix_ht*nbr;

if (prix_total_ht < broker_palier_2) {
prix_ttc = prix_total_ht-broker_taxe_min_2;
total_frais = prix_ttc;
}
else if (prix_total_ht > broker_palier_2) {
prix_ttc = prix_total_ht-(prix_total_ht*broker_taxe_max_2);
total_frais = prix_ttc;
}
if (total_frais < broker_frais_2) {
prix_ttc = total_frais-broker_frais_2;
}
document.getElementById("prix").innerHTML = prix_ttc;
}