image = new Array

image[1]="petites_photos/01.jpg"
image[2]="petites_photos/02.jpg"
image[3]="petites_photos/03.jpg"
image[4]="petites_photos/04.jpg"
image[5]="petites_photos/05.jpg"

random_num = (Math.round((Math.random()*4)+1))


document.write("<img src=\"" + image[random_num] + "\">");