{
var bg = new Array(9);
bg[0] = 'se7enpic/1.jpg'
bg[1] = 'se7enpic/2.jpg'
bg[2] = 'se7enpic/3.jpg'
bg[3] = 'se7enpic/4.jpg'
bg[4] = 'se7enpic/5.jpg'
bg[5] = 'se7enpic/6.jpg'
bg[6] = 'se7enpic/7.jpg'
bg[7] = 'se7enpic/8.jpg'
bg[8] = 'se7enpic/9.jpg'
bg[9] = 'se7enpic/10.jpg'
var index = Math.floor(Math.random() * bg.length);
document.body.style.backgroundImage = "url("+bg[index]+")";
document.body.style.backgroundRepeat = "no-repeat";
document.body.style.backgroundAttachment = "fixed";
document.body.style.backgroundPositionX = "center";

}