function display_nav (id) {
	var elem = document.getElementById(id);
	var active = false;
	
	if (elem.className == "subnav_active") {
		active = true;
	}
	
	var allelem = document.getElementsByName("subnav");
	alert("len: "+allelem);
	for (i=0; i<allelem.length; i++) {
		alert(allelem[i].id);
		allelem[i].className = "subnav_inactive";
		
	}
	
	if (!active) {
		elem.className = "subnav_active";
	}
	
}


function close_menu (id, height) {
	document.getElementById(id).style.height = height+"px";
	if (height > 0) {
		setTimeout("close_menu('"+id+"', "+height+")", 10);
	}else{
		document.getElementById(id).className = "subnav_inactive";
	}
}

function open_menu(id) {
}