timer=false;
navlay_on=0;
function show(x){
	if (timer) clearTimeout(timer);
	if (x!= navlay_on) hide_navlay();
	if (x!=0){
		obj = eval("(document.all)?document.all.navlay"+x+".style:(document.layers)?document.navlay"+x+":document.getElementById(\"navlay"+x+"\").style");
		obj.visibility="visible";
	}
	navlay_on=x;
}
function hide_navlay(){
	for(i=1; i<=navlays; i++){
		obj = eval("(document.all)?document.all.navlay"+i+".style:(document.layers)?document.navlay"+i+":document.getElementById(\"navlay"+i+"\").style");
		obj.visibility="hidden";
	}
	navlay_on=0;
}
function hide(n){timer=setTimeout('hide_navlay()',1);}