function choose_class(rub) {

    switch (rub) {
        case 'actus':
            param = "rose";
            break;
        case 'mieux-vivre':
            param = "violet1";
            break;
        case 'inventer la maison de demain':
            param = "vert21";
            break;
        case 'visites':
            param = "violet2";
            break;
        case 'deco':
            param = "marron3";
            break;
        case 'vivre-dehors':
            param = "marron2";
            break;
        case 'lumiere':
            param = "marron1";
            break;
        case 'salle-de-bains':
            param = "jaune";
            break;
        case 'cuisine':
            param = "vert";
            break;
        case 'amenager':
            param = "bleu1";
            break;
        case 'ranger':
            param = "bleu2";
            break;
        case 'enfants':
            param = "bleu3";
            break;
        default:
            param = rub;
            break;
    }

    return param;
}