// navigation commands

function get_element(id)
{
	if(document.getElementById) return document.getElementById(id);
	if(document.all) return document.all[id];
	return null;
}

function get_folder_cookie_value()
{
	robj = new RegExp("(^|\\s|;)(open=)([^;]+)(;|$)");
	if (document.cookie.match(robj)){
		return RegExp.$3;
	}
	return "";
}

function set_folder_cookie(item)
{
	cookiestr = get_folder_cookie_value();
	if (cookiestr.indexOf('_' + item + '_') == -1)
	{
		cookiestr = cookiestr + '_' + item + '_';
	}
	var d = new Date();
	d.setTime(d.getTime() + 3600000 * 24 * 7);
	document.cookie = 'open=' + cookiestr + '; expires=' + d.toGMTString();
}

function unset_folder_cookie(item)
{
	cookiestr = get_folder_cookie_value();
	if (cookiestr.indexOf('_' + item + '_') != -1)
	{
		cookiestr = cookiestr.replace('_' + item + '_', '');
	}
	var d = new Date();
	d.setTime(d.getTime() + 3600000 * 24 * 7);
	document.cookie = 'open=' + cookiestr + '; expires=' + d.toGMTString();
}

function show_item(item)
{
	var tool_hide = get_element(item + '_hide');
	var tool_show = get_element(item + '_show');
	var tool_list = get_element(item + '_list');
	if(tool_hide && tool_hide.style && tool_show && tool_show.style && tool_list && tool_list.style)
	{
		tool_hide.style.display = 'none';
		tool_show.style.display = 'inline';
		tool_list.style.display = 'inline';
		set_folder_cookie(item);
	}
}

function hide_item(item)
{
	var tool_hide = get_element(item + '_hide');
	var tool_show = get_element(item + '_show');
	var tool_list = get_element(item + '_list');
	if(tool_hide && tool_hide.style && tool_show && tool_show.style && tool_list && tool_list.style)
	{
		tool_hide.style.display = 'inline';
		tool_show.style.display = 'none';
		tool_list.style.display = 'none';
		unset_folder_cookie(item);

	}
}

function show_all()
{
	for (var i = 0; i < arguments.length; i++)
	{
		show_item(arguments[i]);
	}
}

function hide_all()
{
	for (var i = 0; i < arguments.length; i++)
	{
		hide_item(arguments[i]);
	}
	var d = new Date();
	d.setTime(d.getTime() - 3600000);
	document.cookie = 'open=; expires=' + d.toGMTString();
}

function toggle_item(item) {
	var tool_hide = get_element(item + '_hide');
	var tool_show = get_element(item + '_show');
	var tool_list = get_element(item + '_list');
	if(tool_hide && tool_hide.style && tool_show && tool_show.style && tool_list && tool_list.style) {
		if(tool_list.style.display == 'none') {
			tool_hide.style.display = 'none';
			tool_show.style.display = 'inline';
			tool_list.style.display = 'inline';
			set_folder_cookie(item);
		}
//		else if(tool_list.style.display == 'inline') {
//			tool_hide.style.display = 'inline';
//			tool_show.style.display = 'none';
//			tool_list.style.display = 'none';
//			unset_folder_cookie(item);
//		}
	}
}

function set_start() {
	openItems = new Array();
	openItems[0] = "prd02";
	openItems[1] = "prd02-03";

	cookiestr = get_folder_cookie_value();
	for (var i=0; i<openItems.length; i++) {
		if (cookiestr.indexOf('_' + openItems[i] + '_') != -1) {
			get_element(openItems[i] + '_hide').style.display = "none";
			get_element(openItems[i] + '_show').style.display = "inline";
			get_element(openItems[i] + '_list').style.display = "inline";
		}
	}
}

// items[items.length] = startList;
var hoge_drop_down = window.onload;
window.onload = function() {
	if(hoge_drop_down != null) hoge_drop_down();
	set_start();
}