function preload()
{
image_1 = new Image();
image_1.src = "../images/3-bonnnes-raisons/photo-patron.jpg";
image_2 = new Image();
image_2.src = "../images/3-bonnnes-raisons/photo-femme.jpg";
image_3 = new Image();
image_3.src = "../images/3-bonnnes-raisons/photo-collectivite.jpg";
image_3 = new Image();
image_3.src = "../images/3-bonnnes-raisons/photo-association.jpg";
}