function preload() {
image1 = new Image();
image1.src = "/img/leading-mutualise.png'";

image2 = new Image();
image2.src = "/img/leading-virtuel.png'";

image3 = new Image();
image3.src = "/img/leading-solution.png'";

image4 = new Image();
image4.src = "/img/leading-competence.png'";

image5 = new Image();
image5.src = "/img/leading-divers.png'";
}

function image(url)
{
document.getElementById('leading-image').style.background = "#FFFFFF url("+url+") no-repeat right top;";
}