son = new Array();
son[0] = './images/index/1.jpg';
son[1] = './images/index/2.jpg';
son[2] = './images/index/3.jpg';
son[3] = './images/index/4.jpg';
son[4] = './images/index/5.jpg';
son[5] = './images/index/6jpg';
son[6] = './images/index/7.jpg';
son[7] = './images/index/8.jpg';
son[8] = './images/index/9.jpg';
son[9] = './images/index/10.jpg';
var nbre = son.length;
n = Math.floor(Math.random()* +nbre);