// JavaScript Document<script type="text/javascript" >

/***********************************************
* Switch Menu script- by Martial B of http://getElementById.com/
* Modified by Dynamic Drive for format & NS4/IE4 compatibility
* Visit http://www.dynamicdrive.com/ for full source code
***********************************************/

var persistmenu="yes" //"yes" or "no". Make sure each SPAN content contains an incrementing ID starting at 1 (id="sub1", id="sub2", etc)
var persisttype="sitewide" //enter "sitewide" for menu to persist across site, "local" for this page only

if (document.getElementById){ //DynamicDrive.com change
document.write('<style type="text/css">\n')
document.write('.submenu{display: none;}\n')
document.write('</style>\n')
}

function SwitchMenu(obj)
{
	if(document.getElementById)
	{
	var el = document.getElementById(obj);
	var ar = document.getElementById("masterdiv").getElementsByTagName("div"); //CHANGED Span to div for validation MP ...DynamicDrive.com change
		if(el.style.display != "block")
		{ //DynamicDrive.com change
			for (var i=0; i<ar.length; i++)
			{
				if (ar[i].className=="submenu") //DynamicDrive.com change
				ar[i].style.display = "none";
			}
			el.style.display = "block";
		}
		else
		{
			el.style.display = "none";
		}
	}
}

function Open(obj)//I added this it will open the supplied object
{
	if(obj == "none")
	{
		
		return;
	}
	
	if(obj != "close")
	{
	var me = document.getElementById(obj);
	me.style.display="block";
	}
}


function Close()// I added this so you can close all menus
{
	var ar = document.getElementById("masterdiv").getElementsByTagName("div");//changed span to div for validation
	for(var i=0 ; i < ar.length; i++)
	{
		if(ar[i].className=="submenu")
		{
			ar[i].style.display="none";
		}
	}
}

function closefront()// I added this to close the front page, you can use this if you need to close a specific element
{
	
		if (document.getElementsByTagName("body").item(0).id =="front")
		{
		//alert ("this is the index page");
		var ar = document.getElementById("masterdiv").getElementsByTagName("div");//I changed span to div for validation
		for(var i=0 ; i < ar.length; i++)
		{
			if(ar[i].className=="submenu")
			{
				ar[i].style.display="none";
			}
		}
		}
	
}

function get_cookie(Name) 
{ 
	var search = Name + "="
	var returnvalue = "";
	if (document.cookie.length > 0) 
	{
		offset = document.cookie.indexOf(search)
		if (offset != -1) 
		{ 
			offset += search.length
			end = document.cookie.indexOf(";", offset);
			if (end == -1) end = document.cookie.length;
			returnvalue=unescape(document.cookie.substring(offset, end))
		}
	}
return returnvalue;
}

function onloadfunction()
{
	var subname = document.getElementsByTagName("body").item(0).id ;//get id of body tag
	if(subname=="none")
	{
		return;
	}
	
	if (persistmenu=="yes")
	{
	var cookiename=(persisttype=="sitewide")? "switchmenu" : window.location.pathname
	var cookievalue=get_cookie(cookiename)
	
	if (cookievalue!="")
	document.getElementById(cookievalue).style.display="block"
	}
	
	
	// I've added this code below
	// This allows us to open a page menu with out having to use the switchmenu onclick
	//i.e. if someone bookmarks a page, it will open straight away without having to click from another page
	
	// I initially used this to close the front page, might not need now
	//closefront(); not used
	
	
	//below will open the menu based on the body tag id of the page
	// all body ids must be menu + the number of the submenu they want to open i.e. menu4 will open sub4
	// if the id has be set to "close" it won't open, it's set to close by default
	
	
	
	var newsub = subname.substring(4);//get the number from the id
	
	
	
	if(newsub !="")// if there is something there
	{
 		
		if( subname == "close")
		{
		Close() ; // if the body id is 'close' close all the menu's
		}
		else
		{
		var name = "sub"+newsub; //add the number to sub and you've got the id of the element to open
		Close(); // Close all the menu to avoid confusion
		Open(name);// then open the required menu
		}
		
	}
	
	
	
	
	
	
	

}

function savemenustate()
{
	var inc=1, blockid=""
	while (document.getElementById("sub"+inc))
	{
		if (document.getElementById("sub"+inc).style.display=="block")
		{
			blockid="sub"+inc
			break
		}
		inc++
	}
var cookiename=(persisttype=="sitewide")? "switchmenu" : window.location.pathname
var cookievalue=(persisttype=="sitewide")? blockid+";path=/" : blockid
document.cookie=cookiename+"="+cookievalue
}

if (window.addEventListener)
window.addEventListener("load", onloadfunction, false)
else if (window.attachEvent)
window.attachEvent("onload", onloadfunction)
else if (document.getElementById)
window.onload=onloadfunction

if (persistmenu=="yes" && document.getElementById)
window.onunload=savemenustate