//reloads the window if Nav4 resized
function ReloadPage(init) {
  if (init==true) with (navigator) {if ((appName=="Netscape")&&(parseInt(appVersion)==4)) {
    document.PgW=innerWidth; document.PgH=innerHeight; onresize=ReloadPage; }}
  else if (innerWidth!=document.PgW || innerHeight!=document.PgH) location.reload();
}
ReloadPage(true);

//fonction qui permet de masquer et d'afficher les calques
var ns4 = (document.layers);
var ie4 = (document.all && !document.getElementById);
var ie5 = (document.all && document.getElementById);
var ns6 = (!document.all && document.getElementById);

function show(id){
	// Netscape 4
	if(ns4){
		document.layers[id].visibility = "show";
	}
	// Explorer 4
	else if(ie4){
		document.all[id].style.visibility = "visible";
	}
	// W3C - Explorer 5+ and Netscape 6+
	else if(ie5 || ns6){
		document.getElementById(id).style.visibility = "visible";
	}
}

function hide(id){
	// Netscape 4
	if(ns4){
		document.layers[id].visibility = "hide";
	}
	// Explorer 4
	else if(ie4){
		document.all[id].style.visibility = "hidden";
	}
	// W3C - Explorer 5+ and Netscape 6+
	else if(ie5 || ns6){
		document.getElementById(id).style.visibility = "hidden";
	}
}