var isFirefox;
if(navigator.userAgent.indexOf("Firefox")!=-1) {  isFirefox = true; }	
/*

 * REQUIRES: cookie.js, list.js and menuarw.js

 */

 

/*

 * Creates the main list variable.

 * It has to be seeded as JavaScript tends to 

 * be useless at dealing with empty arrays.

 * Seeding it reduces the chances of errors.

 */

var menuContentList=Array("seed");



/*

 * Attempts to read in the menucontent cookie for the site

 * If it does exist and is valid, it then attempts to hide

 * any objects listed within it.

 */

function initMenuContent()

{

	if (document.all || isFirefox)

	{

		cookiestring=ndgetCookie("swg_menucontent");

		if (typeof cookiestring=="string")

		{

			if (cookiestring.length>0)

			{

				menuContentList=cookiestring.split("|");

				for (count=0; count<menuContentList.length; count++)

				{

					if (menuContentList[count]!="seed")

					{

						hideMenuContent(menuContentList[count]);

					}

				}

			}

		}

	}

}



/*

 * Sets an object to visible (block display style)

 */

function showMenuContent(id)

{

	if (document.all || isFirefox)

	{

		obj=document.getElementById(id);
		if (obj)

		{

			obj.style.display="block";

		}

		menuArwToDown(id);

	}

}



/*

 * Sets an object to hidden (none display style)

 */

function hideMenuContent(id)

{

	if (document.all || isFirefox)

	{

		obj=document.getElementById(id);

		if (obj)

		{

			obj.style.display="none";

		}

		menuArwToUp(id);

	}

}



/*

 * Attempts to toggle the visibility of an object.

 *

 * It checks for "none" as defining a display value via a stylesheet seems

 * to leave IE with a blank string, not the value you've actually set. As

 * that then screws up the first check, you have to search for none instead.

 *

 * Once the displaying is handled, any hidden objects are added to the list

 * and any visible objects are removed from the list - if they were already there.

 *

 * The list is then stored out to a cookie so the next page to need it can read it.

 */

function toggleMenuContent(id)

{

	if (document.all || isFirefox)

	{

		objnostyle=document.getElementById(id);
		obj=objnostyle.style;

		if (obj.display.indexOf("none")==-1)

		{

			hideMenuContent(id);

			menuContentList=addToList(menuContentList, id);

		}

		else

		{

			showMenuContent(id);

			menuContentList=removeFromList(menuContentList, id);

		}

		stringversion=unsplit("|", menuContentList);

		ndsetCookie("swg_menucontent", stringversion, "never");

	}

}



/*

 *	Forces a menu open

 */

function forceMenuOpen(id)

{

	if (document.all || isFirefox)

	{

		showMenuContent(id);

		menuContentList=removeFromList(menuContentList, id);

		stringversion=unsplit("|", menuContentList);

		ndsetCookie("swg_menucontent", stringversion, "never");

	}

}



/*

 * Takes an array of IDs and forces them all to closed, writing the cookie.

 */

function forceMenuListClosed(listOfIDs)

{

	if (typeof listOfIDs == "string")

	{

		temp=listOfIDs.split(",");

		listOfIDs=temp;

	}



	for (count=0; count<listOfIDs.length; count++)

	{

		id=listOfIDs[count];

		hideMenuContent(id);

		menuContentList=addToList(menuContentList, id);

	}

	stringversion=unsplit("|", menuContentList);

	ndsetCookie("swg_menucontent", stringversion, "never");

}



/*

 * If the cookie can't be found, 

 * but could have been set (which implies this is a first visit), 

 * close up the list of ids.

 */

function defaultMenuClosed(listOfIDs)

{

	if (document.all || isFirefox)

	{

		if (navigator.cookieEnabled)

		{

			if (!ndgetCookie("swg_menucontent"))

			{

				forceMenuListClosed(listOfIDs);

			}

		}

	}

}