function majMarque(id_marque){

Element.hide('div_modele');
//alert(id_marque);
new Ajax.Updater('div_modele', 'modele.php',{method: 'post', parameters: '?marque='+id_marque, evalScripts:true});
Effect.Appear('div_modele',{duration:1});

}

function majMarque1(id_marque1){

Element.hide('div_modele1');
//alert(id_marque);
new Ajax.Updater('div_modele1', 'modele1.php',{method: 'post', parameters: '?marque1='+id_marque1, evalScripts:true});
Effect.Appear('div_modele1',{duration:1});

}