function avis_verifier()
    {
    var pass=true;


    if ($("#ville").val()=="")
        {
        $("#ville_label").attr("style","color:#FF0000");
        pass=false;
        }
    else
        {
        $("#ville_label").attr("style","color:#555");
        }

    if ($("#commentaire").val()=="")
        {
        $("#commentaire_label").attr("style","color:#FF0000");
        pass=false;
        }
    else
        {
        $("#commentaire_label").attr("style","color:#555");
        }

    if ($("select[name='film'] option:selected").val()=="seletionner")
        {
        $("#film_label").attr("style","color:#FF0000");
        pass=false;
        }
    else
        {
        $("#film_label").attr("style","color:#555");
        }

    if (pass==false)
        {
        alert("Veuillez renseigner correctement les champs en rouge");
        }

        
    return pass;
    }

$(document).ready(function(){

    $("#liste_films").change(function()
        {
        $("#form_films").submit();
        });
});