function login_href(login, member){

	// get auth cookie
	value = getCookieValue("SEBB");

	// redirect page
	if ( value == null ){
		location.href = login;
	}else{
		location.href = member;
	}
}
function logout(url){

	// update auth cookie
	document.cookie = "SEBB=; domain=sanriobb.com; path=/; expires=Sat, 19-May-2000 00:00:00 GMT";
	document.cookie = "STAR=; domain=sanriobb.com; path=/; expires=Sat, 01-Jan-2000 00:00:00 GMT";

	// redirect page
	location.href = url;
}
function getCookieValue(name){
	var	cookie;
	var	offset;
	var	endptr;
	var	i = 0;

	// get cookie
	cookie = document.cookie;

	// get cookie value;
	name += "=";
	while (i < cookie.length){
		offset = i + name.length;
		if ( cookie.substring(i, offset) == name ){
			endptr = cookie.indexOf(";", offset);
			if ( endptr == -1 ) endptr = cookie.length;
                        return unescape(cookie.substring(offset, endptr));
		}
		i = cookie.indexOf(" ", i) + 1;
		if (i == 0) break;
        }
	return null;
}