function navi_wn_open() {
	document.getElementById("navi_wn_sub").style.display = "block";
	document.getElementById("navi_wn").style.background = "#d1e9d5";
}

function navi_wn_close() {
	timerID = setTimeout("navi_wn_close2()", 5000);
}

function navi_wn_close2() {
	document.getElementById("navi_wn_sub").style.display = "none";
	document.getElementById("navi_wn").style.background = "none";
}