son = new Array();
son[0] = 'images/banner_tournus/basel1.jpg';
son[1] = 'images/banner_tournus/basel2.jpg';
son[2] = 'images/banner_tournus/basel3.jpg';
son[3] = 'images/banner_tournus/basel4.jpg';
son[4] = 'images/banner_tournus/basel5.jpg';
son[5] = 'images/banner_tournus/basel6.jpg';
son[6] = 'images/banner_tournus/basel7.jpg';

var nbre = son.length;
n = Math.floor(Math.random()* +nbre);