function objet() {
this.length = objet.arguments.length
for (var i = 0; i < this.length; i++) this[i+1] = objet.arguments[i]
}
var nom = new objet ("bc1.jpg", "bc2.jpg", "bc3.jpg","bc4.jpg");
var numero = 1;
function changerbc() {
document.image.src = "images/bc/"+nom[numero];
numero += 1;
if (numero == nom.length + 1) numero = 1;
setTimeout("changerbc()", 4000);
}