var rolloversDir = null;
var imageNames = null;
var rolloversDir = '/img/menu/';
var menuPreloadFlag = false;
var loadedImages = new Array();

function init()
{
	if (null == rolloversDir || null == imageNames) return;
	var nextName;
	var nextIndex;
	for (nextIndex in imageNames)
	{
		nextName = imageNames[nextIndex];
		loadedImages[nextName] = new Array(new Image(), new Image());
		loadedImages[nextName][0].src = rolloversDir + nextName + '_off.gif';
		loadedImages[nextName][1].src = rolloversDir + nextName + '_over.gif';
	}
	menuPreloadFlag = true;
}

function swapImageOn(imageName)
{
	if (document.images && menuPreloadFlag) document.images[imageName + 'MenuImage'].src = loadedImages[imageName][1].src;
}

function swapImageOff(imageName)
{
	if (document.images && menuPreloadFlag) document.images[imageName + 'MenuImage'].src = loadedImages[imageName][0].src;
}

function swapInputOn(imageName)
{
	if (menuPreloadFlag && document.getElementById)
	{
		var input = document.getElementById(imageName + 'MenuImage');
		input.src = loadedImages[imageName][1].src;
	}
}

function swapInputOff(imageName)
{
	if (menuPreloadFlag && document.getElementById)
	{
		var input = document.getElementById(imageName + 'MenuImage');
		input.src = loadedImages[imageName][0].src;
	}
}

function showBrunchMenu(swapOff)
{
	var mainNavDiv = document.getElementById('mainMenuMenuDiv');
	var brunchNavDiv = document.getElementById('brunchMenuMenuDiv');
	var mainMenuDiv = document.getElementById('mainMenuContainer');
	var brunchMenuDiv = document.getElementById('brunchMenuContainer');
	swapImageOff(swapOff);
	mainNavDiv.style.visibility = 'hidden';
	brunchNavDiv.style.visibility = 'visible';
	mainMenuDiv.style.visibility = 'hidden';
	brunchMenuDiv.style.visibility = 'visible';
}

function showMainMenu(swapOff)
{
	var mainNavDiv = document.getElementById('mainMenuMenuDiv');
	var brunchNavDiv = document.getElementById('brunchMenuMenuDiv');
	var mainMenuDiv = document.getElementById('mainMenuContainer');
	var brunchMenuDiv = document.getElementById('brunchMenuContainer');
	swapImageOff(swapOff);
	brunchNavDiv.style.visibility = 'hidden';
	mainNavDiv.style.visibility = 'visible';
	brunchMenuDiv.style.visibility = 'hidden';
	mainMenuDiv.style.visibility = 'visible';
}