function exMenu(tName) {
	tMenu = document.all[tName].style;
	if (tMenu.display == 'none') {
		tMenu.display = "block";
		treeitems[tName] = "block";
		document.getElementsByName("img"+tName)[0].src = "/images/menu_item/arr2.gif";
	} else {
		tMenu.display = "none";
		treeitems[tName] = "none";
		document.getElementsByName("img"+tName)[0].src = "/images/menu_item/arr.gif";
	}
}
function exMenu2(tName) {
	tMenu = document.all[tName].style;
	tMenu.display = "block";
	treeitems[tName] = "block";
	document.getElementsByName("img"+tName)[0].src = "/images/menu_item/arr2.gif";
}

function exFld(tName) {
	tFld = document.all[tName].style;
	if (tFld.display == 'none') {
		tFld.display = "block";
	} else {
		tFld.display = "none";
	}
}
/*
Alternative Style: Working With Alternate Style Sheets
	by PAUL SOWDEN
	http://www.alistapart.com/articles/alternate/
*/

function setActiveStyleSheet(title,mode) {
	var i, a, b;
	
	if (mode == 1) {
		document.imgsmaller.src = "/alternate/s.gif";
		document.imgmidd.src = "/alternate/d.gif";
		document.imglarger.src = "/alternate/l.gif";
		document.imglargest.src = "/alternate/ll.gif";
		if (title == 'smaller') document.imgsmaller.src = "/alternate/sf.gif";
		else if (title == 'default') document.imgmidd.src = "/alternate/df.gif";
		else if (title == 'larger') document.imglarger.src = "/alternate/lf.gif";
		else if (title == 'largest') document.imglargest.src = "/alternate/llf.gif";
	}
	
	for(i=0; (a = document.getElementsByTagName("link")[i]); i++) {
		if(a.getAttribute("rel").indexOf("style") != -1 && a.getAttribute("title")) {
			a.disabled = true;
			if(a.getAttribute("title") == title) {
				a.disabled = false;
			}
		}
	}
}
function getActiveStyleSheet() {
	var i, a;
	for(i=0; (a = document.getElementsByTagName("link")[i]); i++) {
		if(a.getAttribute("rel").indexOf("style") != -1 && a.getAttribute("title") && !a.disabled) return a.getAttribute("title");
	}
	return null;
}

function createCookie(name,value,days) {
	if (days) {
		var date = new Date();
		date.setTime(date.getTime()+(days*24*60*60*1000));
		var expires = "; expires="+date.toGMTString();
	}
	else expires = "";
	document.cookie = name+"="+value+expires+"; path=/";
}

function readCookie(name) {
	var nameEQ = name + "=";
	var ca = document.cookie.split(';');
	for(var i=0;i < ca.length;i++) {
		var c = ca[i];
		while (c.charAt(0)==' ') c = c.substring(1,c.length);
		if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
	}
	return null;
}

function getPreferredStyleSheet() {
	var i, a;
	for(i=0; (a = document.getElementsByTagName("link")[i]); i++) {
		if(a.getAttribute("rel").indexOf("style") != -1 && a.getAttribute("rel").indexOf("alt") == -1 && a.getAttribute("title")) return a.getAttribute("title");
	}
	return null;
}

window.onload = function(e) {
	var cookie = readCookie("style");
	var title = cookie ? cookie : getPreferredStyleSheet();
	setActiveStyleSheet(title,1);
	
	var items = new Array();
	var cookie2 = readCookie("treemenu");
	if (cookie2)	{
		items = cookie2.split(",");
		for (i in items) {
			exMenu(items[i]);
		}
	}
	exMenu3();
}

 
window.onunload = function(e) {
	var title = getActiveStyleSheet();
	createCookie("style", title, 365);
	
	var value = "";
	for (i in treeitems) {
		if (treeitems[i] == 'block') value += i + ",";
	}
	value = value.replace(/,$/,"");
	createCookie("treemenu", value, 0);
}

var treeitems = new Array();
var cookie = readCookie("style");
var title = cookie ? cookie : getPreferredStyleSheet();
setActiveStyleSheet(title,0);

var items = new Array();

var cookie2 = readCookie("treemenu");
if (cookie2)	{
	items = cookie2.split(",");
	for (i in items) {
		exMenu(items[i]);
	}
}