function preload() {
	nb_arguments = preload.arguments.length;
	if (nb_arguments > 0) {
		var img_load = new Array();
		for (var i=0; i<nb_arguments; i++) {
			img_load[i+1] = new Image();
			img_load[i+1].src = preload.arguments[i];
		}
	}
}

preload("img/bonus/bonus1.jpg");
preload("img/contact/contact1.jpg");
preload("img/groupe/groupe1.jpg","img/groupe/devis1.jpg","img/groupe/plaquette1.jpg");
preload("img/services/service_gauche1.jpg","img/services/service_droite1.jpg");
preload("img/bio/christophe1.jpg","img/bio/alex1.jpg","img/bio/jean_baptiste1.jpg","img/bio/martin1.jpg","img/bio/fanny1.jpg");
preload("img/press/press1.jpg","img/press/lafayette1.jpg");
function rollover(objet, img){
	objet.src = img;
}