function cacheDetail()
{
	document.getElementById('neuville').style.display="none";
	document.getElementById('boulogne').style.display="none";
	document.getElementById('arras').style.display="none";
	document.getElementById('wattrelos').style.display="none";
	document.getElementById('mouscrou').style.display="none";
	document.getElementById('arras').style.display="none";
	document.getElementById('englos').style.display="none";
	document.getElementById('bauvin').style.display="none";

}
function affiche(id)
{
	cacheDetail();
	document.getElementById(id).style.display="block";
}