if (document.images) {

img1on = new Image();
img1on.src = "../../images/nav/accueil_on.jpg";

img2on = new Image();
img2on.src = "../../images/nav/organisme_on.jpg";

img3on = new Image();
img3on.src = "../../images/nav/festival_on.jpg";

img4on = new Image();
img4on.src = "../../images/nav/marche_on.jpg";

img5on = new Image();
img5on.src = "../../images/nav/ecole_on.jpg";

img6on = new Image();
img6on.src = "../../images/nav/animations_on.jpg";

img7on = new Image();
img7on.src = "../../images/nav/partenaires_on.jpg";

img8on = new Image();
img8on.src = "../../images/nav/artisans_on.jpg";

img9on = new Image();
img9on.src = "../../images/nav/clients_on.jpg";

img10on = new Image();
img10on.src = "../../images/nav/metiers_on.jpg";

img11on = new Image();
img11on.src = "../../images/nav/coordonnees_on.jpg";

img1off = new Image();
img1off.src = "../../images/nav/accueil.jpg";

img2off = new Image();
img2off.src = "../../images/nav/organisme.jpg";

img3off = new Image();
img3off.src = "../../images/nav/festival.jpg";

img4off = new Image();
img4off.src = "../../images/nav/marche.jpg";

img5off = new Image();
img5off.src = "../../images/nav/ecole.jpg";

img6off = new Image();
img6off.src = "../../images/nav/animations.jpg";

img7off = new Image();
img7off.src = "../../images/nav/partenaires.jpg";

img8off = new Image();
img8off.src = "../../images/nav/artisans.jpg";

img9off = new Image();
img9off.src = "../../images/nav/clients.jpg";

img10off = new Image();
img10off.src = "../../images/nav/metiers.jpg";

img11off = new Image();
img11off.src = "../../images/nav/coordonnees.jpg";

}
function imgOn (imgName) {
if (document.images) {
document[imgName].src = eval(imgName + "on.src");
}
}
function imgOff (imgName) {
if (document.images) {
document[imgName].src = eval(imgName + "off.src");
}
}