function get_cif() {
        if (typeof( document.getElementById('img_cif') ) != "undefined") {
            var random = Math.floor((Math.random() * 2) + 1);
            document.getElementById('img_cif').src = '/static/common/images/cif_'+random+'.jpg';
        }
    }

    function open_form_cif(offre_id, options) {
        var largeur = 840;
        var hauteur = 680;

        var top = (screen.height-hauteur)/2;
        var left = (screen.width-largeur)/2;

        window.open("/contact-cif/"+offre_id+"/","","scrollbars=yes,top="+top+",left="+left+",width="+largeur+",height="+hauteur+","+options);
    }