function choix_recherche()
	{
		var type_rech_obj = document.forms.rechercheform.type_recherche;
		var type_rech = type_rech_obj.options[type_rech_obj.selectedIndex].value;

		if (type_rech == 'nom')
		{
			$('div_nom').show();
			$('nom').style.width = '250px';
			$('div_prenom').hide();
			$('div_societe').hide();
		}
		else if (type_rech == 'nom_prenom')
		{
			$('nom').style.width = '120px';
			$('div_nom').show();
			$('div_prenom').show();
			$('div_societe').hide();
		}
		else if (type_rech == 'societe')
		{
			$('div_nom').hide();
			$('div_prenom').hide();
			$('div_societe').show();
		}
	}