//initialize
var DM_activeMenus = new menuset();
document.onclick = DM_hideMenus;
window.onresize = positionMenus;

window.onload = initPage;


//initPage: initializes a page after it loads
function initPage() 
{
	DM_activeMenus.positionTimer = setInterval("positionAllMenus()",3000);
}


//***** MENUSET FUNCTIONS *****

//menuset: menuset constructor
function menuset() 
{
	this.menus = new Array();
	this.ready = false;
	this.positioned = false;
	this.timer = null;
	this.positionTimer = null;
	this.positionedMenu = 0;
	this.currLocation = "";

	//public properties	
	this.backgroundColor = "#009999";
	this.hBackgroundColor = "#ffffff";
	this.color = "#ffffff";
	this.hColor = "#006666";
	this.fontFamily = "Arial,Helvetica,Verdana,sans-serif";
	this.padding = 3;
	this.fontSize = 8;
	this.heightSingle = 21;
	this.heightDouble = 36;
	this.heightSingleTextLimit = 22;
	this.width = 130;
	this.spacerURL = "/site_images/s.gif";
	this.subImgURL = "/site_images/s.gif";
	this.subImgWidth = 18;
	this.subImgHeight = 20;
	
	return this;
}
menuset.prototype.addMenu = addMenu;
menuset.prototype.appendMenu = appendMenu;
menuset.prototype.show = showMenusetMenu;
menuset.prototype.hide = DM_hideMenusetMenu;
menuset.prototype.DM_hideMenus = hideDM_activeMenus;
menuset.prototype.getMenu = getMenu;
menuset.prototype.getMenuItem = getMenuItem;
menuset.prototype.highlightOn = highlightMenuItemOn;
menuset.prototype.highlightOff = highlightMenuItemOff;
menuset.prototype.setPosition = setMenusetPosition;
menuset.prototype.writeHTML = writeMenusetHTML;
menuset.prototype.writeStyles = writeMenusetStyles;

//addMenu: adds a menu to a menuset
function addMenu(sId,sParentId,sMenuAnchor,sParentAnchor,sOffImgURL,sOnImgURL)
{
	var i = this.menus.length;
	var eMenu = new menu(sId,sParentId,this,sMenuAnchor,sParentAnchor,sOffImgURL,sOnImgURL);
	this.menus[i] = eMenu;
	
	return eMenu;
}

//appendMenu: appends a menu object to the menuset
function appendMenu(eMenu)
{
	var i = this.menus.length;
	this.menus[i] = eMenu;
	
	return eMenu;
}

//showMenusetMenu: shows a menu
function showMenusetMenu(sId,bSetTimeout) 
{
	var eMenu = this.getMenu(sId);
	if (!eMenu)
	{
		//if the menu doesn't exist, fail gracefully
		return;
	}
	//hide all menus except the one to display
	this.DM_hideMenus(sId);
	
	//show the menu
	eMenu.show();
	
	//turn timer on
	clearTimeout(this.timer);
	if (bSetTimeout)
	{
		//turn timer on
		this.timer = setTimeout("DM_hideMenus()",100);
	}
	else
	{
		//turn timer on for a long time
		this.timer = setTimeout("DM_hideMenus()",5000);
	}
	
	return eMenu;
}

//DM_hideMenusetMenu: schedules a menu for removal
function DM_hideMenusetMenu(sId) {
	var eMenu;
	eMenu = this.getMenu(sId);
	if (eMenu) {
		eMenu.hide();
	}
}

//DM_hideMenus: general function that calls DM_hideMenus on the menuset
function DM_hideMenus(sId) {
	if (sId) {
		DM_activeMenus.DM_hideMenus(sId);
	} else {
		DM_activeMenus.DM_hideMenus();
	}
}

//setMenuPosition: general function that calls setPosition on the menuset
function positionAllMenus() {
	if (DM_activeMenus.positionedMenu == DM_activeMenus.menus.length) {
		DM_activeMenus.positioned = true;
		clearInterval(DM_activeMenus.positionTimer);
		return;
	} else {
		DM_activeMenus.setPosition(DM_activeMenus.positionedMenu);
		DM_activeMenus.positionedMenu += 1;
	}
}

//positionMenus: general function that calls setPosition on the menuset
function positionMenus() {
	if (mBrowser.isNS4) {
		window.location.reload();
	} else {
		DM_activeMenus.setPosition();
	}	
}

//hideDM_activeMenus: hides all items
function hideDM_activeMenus(sId,bSubMenuOnly) {
	var eMenu;
	var oMenus = this.menus;
	var iNumMenus = oMenus.length;

	for (var i=0; i < iNumMenus; i++) {
		eMenu = oMenus[i];
		eMenu.hide(sId,bSubMenuOnly);
	}
}

//setMenusetPosition: positions all menus
function setMenusetPosition(iMenu) {
	if (this.positioned){
		return;
	}
	
	var eMenu;
	var oMenus = this.menus;
	var iNumMenus = oMenus.length;
	
	if (!isNaN(iMenu)){
		iNumMenus = iMenu + 1;
	} else {
		iMenu = 0;
	}

	for (var i=iMenu; i < iNumMenus; i++) {
		//window.status = "positioning menus " + i;
		eMenu = oMenus[i];
		eMenu.setPosition();
	}
	//window.status = "";
	
	this.ready = true;
}

//highlightMenuItemOn: highlights a menu item
function highlightMenuItemOn(sId) {
	var eMenuItem = this.getMenuItem(sId);
	eMenuItem.highlightOn();
}

//highlightMenuItemOff: de-highlights a menu item
function highlightMenuItemOff(sId) {
	var eMenuItem = this.getMenuItem(sId);
	eMenuItem.highlightOff();
}


//getMenu: returns the first menu with the specified id
function getMenu(sId) {
	var eMenu;
	var oMenus = this.menus;
	var iNumMenus = oMenus.length;

	for (var i=0; i < iNumMenus; i++) {
		eMenu = oMenus[i];
		if (sId == eMenu.id) {
			return eMenu;
		}
	}
	return null;
}

//getMenuItem: returns the first menuItem with the specified id
function getMenuItem(sId) 
{
	var eMenu;
	var eMenuItem;
	var oMenus = this.menus;
	var iNumMenus = oMenus.length;
	
	for (var i=0; i < iNumMenus; i++) {
		eMenu = oMenus[i];
		eMenuItem = eMenu.getItem(sId);
		if (eMenuItem) {
			return eMenuItem;
		}
	}
	return null;
}

//writeMenusetHTML: writes each menu's HTML to the page
function writeMenusetHTML()
{
	var sHTML = "";

	var eMenu;
	var oMenus = this.menus;
	var iNumMenus = oMenus.length;
	
	for (var i=0; i<iNumMenus; i++)
	{
		eMenu = oMenus[i];
		sHTML += eMenu.getHTML();
	}
	//alert(sHTML);
	document.write(sHTML);
}

//writeMenusetStyles: writes each menu's styles to the page
function writeMenusetStyles()
{
	var sHTML = "<style>\nDIV.Menu {visibility:hidden; position:absolute; background-color:#000000; layer-background-color: #000000; width:200px; z-index:70; clip:rect(0px, 200px, 500px, 0px);}";

	sHTML += "\nDIV.MenuEmpty {visibility:hidden; position:absolute; background-color:#000000; layer-background-color: #000000; width:0px; z-index:70; clip:rect(0px, 0px, 0px, 0px);}";
	sHTML += "TABLE.MenuItem {width:100%;}";
	sHTML += "TD.MenuItemText {padding:" + this.padding + "px;}";
	
	var eMenu;
	var oMenus = this.menus;
	var iNumMenus = oMenus.length;
	
	for (var i=0; i<iNumMenus; i++)
	{
		eMenu = oMenus[i];
		sHTML += eMenu.styles;
	}
	
	sHTML += "DIV.MenuItemCover {visibility: hidden; position:absolute; cursor:hand; color:#000000; width:" + this.width + "px; height:50px; clip:rect(0px," + this.width + "px,51px,0px); vertical-align:middle; padding:0px; z-index:100;}</style>";

	//alert(sHTML);
	document.write(sHTML);
}



//***** MENU FUNCTIONS *****

//menu: menu object constructor
function menu(sId,sParentId,oMenuset,sAnchor,sParentAnchor,sOffImgURL,sOnImgURL) 
{
	this.id = sId;
	this.menuImg = sId + "_img";
	this.menuset = oMenuset;
	this.html = null;
	this.styles = null;
	this.positioned = false;
	this.ready = false;
	this.menuAnchor = sAnchor;
	this.parentAnchor = sParentAnchor;
	this.menuItems = new Array();
	this.parentId = sParentId;
	this.spacerURL = oMenuset.spacerURL;
		
	if (sOnImgURL) {
		var imgOff = new Image();
		imgOff.src = sOffImgURL;
		this.imgOff = imgOff;
		
		var imgOn = new Image();
		imgOn.src = sOnImgURL;
		this.imgOn = imgOn;
	} else {
		this.imgOn = null;
		this.imgOff = null;
	}

	//public properties
	this.backgroundColor = oMenuset.backgroundColor;
	this.hBackgroundColor = oMenuset.hBackgroundColor;
	this.color = oMenuset.color;
	this.hColor = oMenuset.hColor;
	this.fontSize = oMenuset.fontSize;
	this.width = oMenuset.width;
	
	this.createHTML();

	if (typeof sParentId == "string")
	{
		//set references to the menu's parent
		var eParent = this.menuset.getMenuItem(sParentId);
		this.parent = eParent;
		eParent.subMenu = this;
	}
	return this;
}
menu.prototype.addItem = addMenuItem;
menu.prototype.show = showMenu;
menu.prototype.hide = hideMenu;
menu.prototype.hideMenuItems = hideMenuItems;
menu.prototype.getItem = getItem;
menu.prototype.createHTML = createMenuHTML;
menu.prototype.getHTML = getMenuHTML;
menu.prototype.setPosition = setMenuPosition;
menu.prototype.createObjects = createMenuObjects;


//addMenuItem: adds a new menu item to a menu
function addMenuItem(sText,sURL,iHeight)
{
	var i = this.menuItems.length;
	var sId = this.id + "Item" + (i + 1);
	var eMenuItem = new menuItem(sId,sText,sURL,this,iHeight);
	this.menuItems[i] = eMenuItem;
	
	return eMenuItem;
}

function setMenuPosition()
{	
	if (this.positioned)
	{
		return;
	}
	
	if (!this.ready)
	{
		this.createObjects();
	}
	
	var oThis = this.object;
	var oMenuItems = this.menuItems;
	var iNumMenuItems = oMenuItems.length;
	var iLeft = 0;
	var iTop = 0;
	var iMenuHeight = 0;
	var iMenuWidth = 0;
	
	//calculate the height of the menu
	var eMenuItem;
	var iTotalHeight = 0;

	for (var i=0; i < iNumMenuItems; i++)
	{
		eMenuItem = oMenuItems[i];
		if (!eMenuItem.ready)
		{
			eMenuItem.createObjects();
		}
		iTotalHeight += getHeight(eMenuItem.object);
	}
	
	//set the menu's height
	iMenuHeight = iTotalHeight + iNumMenuItems + 1;
	this.height = iMenuHeight;
	setHeight(oThis,iMenuHeight);
	
	//set the menu's width
	if (eMenuItem)
	{
		iMenuWidth = eMenuItem.getWidth() + 2;
		this.width = iMenuWidth;
		setWidth(oThis,iMenuWidth);
	}
	
	//get a reference to the object that the menu should be positioned against
	var eAttach = getObj(this.menuImg);

	if (mBrowser.isMac && mBrowser.isIE)
	{
		var iLeftIncrement = 3;
		var iTopIncrement = 2;
	}
	else
	{
		var iLeftIncrement = 0;
		var iTopIncrement = 2;	
	}
	//position the menu relative to an item on the page
	if (eAttach)
	{
		switch (this.menuAnchor)
		{
			case "topLeft":
				switch (this.parentAnchor)
				{
					case "topLeft":
						break;
					case "topRight":
						iLeft = getOffset(eAttach,"left") + getWidth(eAttach,"Img") + iLeftIncrement;
						iTop = getOffset(eAttach,"top") + iTopIncrement - 1;
						break;
					case "bottomLeft":
						iLeft = getOffset(eAttach,"left") + iLeftIncrement;
						iTop = getOffset(eAttach,"top") + getHeight(eAttach,"Img") - 1 + iTopIncrement;
						break;
					case "bottomRight":
						break;
					default:
						break;
				}
				break;
			case "topRight":
				switch (this.parentAnchor)
				{
					case "topLeft":
						break;
					case "topRight":
						break;
					case "bottomLeft":
						break;
					case "bottomRight":
						iLeft = getOffset(eAttach,"left") + getWidth(eAttach,"Img") - iMenuWidth + 1 + iLeftIncrement;
						iTop = getOffset(eAttach,"top") + getHeight(eAttach,"Img") - 1 + iTopIncrement;
						break;
					default:
						break;
				}
				break;
			case "bottomLeft":
				switch (this.parentAnchor)
				{
					case "topLeft":
						iLeft = getOffset(eAttach,"left") + iLeftIncrement;
						iTop = getOffset(eAttach,"top") - iMenuHeight + iTopIncrement;
						break;
					case "topRight":
						break;
					case "bottomLeft":
						break;
					case "bottomRight":
						break;
					default:
						break;
				}
				break;
			case "bottomRight":
			default:
				switch (this.parentAnchor)
				{
					case "topLeft":
						break;
					case "topRight":
						iLeft = getOffset(eAttach,"left") + getWidth(eAttach,"Img") - iMenuWidth + iLeftIncrement;
						iTop = getOffset(eAttach,"top") - iMenuHeight + iTopIncrement;
						break;
					case "bottomLeft":
						break;
					case "bottomRight":
						break;
					default:
						break;
				}
				break;
		}
		
		var oStyleObj = this.styleObj;
		if (mBrowser.isIE)
		{
			oStyleObj.posLeft = iLeft;
			oStyleObj.posTop = iTop;
		}
		else
		{
			oStyleObj.left = iLeft;
			oStyleObj.top = iTop;
		}
	}
	//initialize the menu's left and top
	this.menuItemLeft = iLeft + 1;
	this.menuItemTop = iTop + 1;

	//position the menu items
	for (var i=0; i < iNumMenuItems; i++)
	{
		eMenuItem = oMenuItems[i];
		eMenuItem.setPosition();
		
		//update the menu's menuItemTop property
		this.menuItemTop += eMenuItem.height + 1;
	}
	this.positioned = true;
}

function showMenu()
{
	//if this menu is already visible, return
	if (this.visibility){
		return;
	}
	
	//position the menu if necessary
	if (!this.positioned){
		this.setPosition();
	}
	
	//if the menu html object references don't exist, return
	if (!this.ready){
		return;
	}

	//highlight the menu's title image
	var eImgOn = this.imgOn;
	if (eImgOn) {
		var eMenuImg = getObj(this.menuImg);
		eMenuImg.src = eImgOn.src;
	}
	
	//show the menu's parent
	var oParent = this.parent;
	if (oParent){
		if (oParent.visibility == false){
			oParent.show();
		}
	}
	
	//show the menu items
	var oMenuItems = this.menuItems;
	var iNumMenuItems = oMenuItems.length;
	for (var i=0; i < iNumMenuItems; i++){
		eMenuItem = oMenuItems[i];
		eMenuItem.show();
	}

	// Show the menu if there is at least one item
	if (iNumMenuItems > 0 ) {
		//show the menu
		this.styleObj.visibility = "visible";
	}
	
	//this.styleObj.display = "block";
	this.visibility = true;
}

function hideMenu(sId,bSubMenuOnly){
	var bHide = false;
	
	//if this menu is not visible, return
	if (!this.visibility){
		return;
	}
	
	//check whether to hide only submenus
	if (bSubMenuOnly){
		if (this.parent){
			//hide the menu
			if (sId){
				if (this.id != sId) {
					bHide = true;
				}
			} else {
				bHide = true;
			}
		}
	} else {
		//hide the menu
		if (sId){
			if (this.id != sId){
				bHide = true;
			}
		} else {
			bHide = true;
		}
	}
	if (bHide){
		//un-highlight the menu's title image
		var eImgOff;
		
		// if this is the image for the current section, don't turn it off
		if (DM_activeMenus.currLocation == this.id) {
			eImgOff = this.imgOn;
		} else {
			eImgOff = this.imgOff;
		}
		
		if (eImgOff) {
			var eMenuImg = getObj(this.menuImg);
			eMenuImg.src = eImgOff.src;
		}
		
		//hide the menu
		this.styleObj.visibility = "hidden";
		//this.styleObj.display = "none";
		this.visibility = false;
		
		this.hideMenuItems();
	}
}

//hideMenuItems: hides all the menu items in this menu
function hideMenuItems() {
	var eMenuItem;
	var oMenuItems = this.menuItems;
	var iNumMenuItems = oMenuItems.length;
	
	//hide the menu items
	for (var i=0; i < iNumMenuItems; i++) {
		eMenuItem = oMenuItems[i];
		eMenuItem.hide();
	}
}

//getItem: returns the first menu item with the specified id
function getItem(sId) {
	var eMenuItem;
	var oMenuItems = this.menuItems;
	var iNumMenuItems = oMenuItems.length;

	for (var i=0; i < iNumMenuItems; i++) {
		eMenuItem = oMenuItems[i];
		if (sId == eMenuItem.id) 
		{
			return eMenuItem;
		}
	}
	return null;
}

function createMenuHTML()
{
	//create the menu
	var sMenu = "";
	
	//if (this.hasMenu) {
		sMenu = "\n\n<div id='" + this.id + "' class='Menu'><img src='" + this.spacerURL + "' height='100%' width='100%' border='0'></div>";
	//} else {
	//	sMenu = "\n\n<div id='" + this.id + "' class='MenuEmpty'><img src='" + this.spacerURL + "' height='100%' width='100%' border='0'></div>";
	//}
	
	
	//create styles
	var sFontSize = this.fontSize;
	if (mBrowser.isWin && mBrowser.isNS4)
	{
		sFontSize += 1;
	}
	if (mBrowser.isMac && mBrowser.isNS4)
	{
		sFontSize += 2;
	}
	var iWidth = this.width;
	var sBackgroundColor = this.backgroundColor;
	var sColor = this.color;
	var sHBackgroundColor = this.hBackgroundColor;
	var sHColor = this.hColor;
	var oMenuset = this.menuset;
	var iPadding = oMenuset.padding;
	var sFontFamilyCSS = "";
	var sFontFamily = oMenuset.fontFamily;
	if (sFontFamily)
	{
		sFontFamilyCSS = " font-family: " + sFontFamily + ";";
	}
	
	var sClassName = this.id + "MenuItem";		
	
	var sStyle = "DIV." + sClassName + ", DIV." + sClassName + "Highlight, DIV." + sClassName + "Parent, DIV." + sClassName + "HighlightParent {visibility:hidden; position:absolute; color:" +  sColor + "; background-color:" + sBackgroundColor + "; layer-background-color:" + sBackgroundColor + "; " + sFontFamilyCSS + " font-size:" + sFontSize + "pt; width:" + iWidth + "px; height: 50px; padding: " + iPadding + "px; clip:rect(0px," + iWidth + "px, 51px, 0px); vertical-align:middle; cursor: hand; z-index: 80;}";
	sStyle += "DIV." + sClassName + "Highlight, DIV." + sClassName + "HighlightParent {color:" +  sHColor + "; background-color:" + sHBackgroundColor + "; layer-background-color:" + sHBackgroundColor + "; " + sFontFamilyCSS + " font-size:" + sFontSize + "pt; z-index: 90;}";
	sStyle += "DIV." + sClassName + "Parent, DIV." + sClassName + "HighlightParent {padding:0px;}";
	sStyle += "DIV." + sClassName + "Parent TD, DIV." + sClassName + "HighlightParent TD {color:" +  sColor + "; " + sFontFamilyCSS + " font-size:" + sFontSize + "pt;}";
	sStyle += "DIV." + sClassName + "HighlightParent TD {color:" +  sHColor + ";}";

	this.html = sMenu;
	this.styles = sStyle;
}

//getMenuHTML: returns the html for the menu and its menu items
function getMenuHTML()
{
	var sHTML = this.html;
	var eMenuItem;
	var oMenuItems = this.menuItems;
	var iNumMenuItems = oMenuItems.length;
		
	for (var i=0; i<iNumMenuItems; i++)
	{
		eMenuItem = oMenuItems[i];
		sHTML += eMenuItem.html;
	}
	return sHTML;
}

//createMenuObjects: creates references to the menu's html objects
function createMenuObjects()
{
	var sId = this.id;
	
	if (this.ready)
	{
		return;
	}
	this.object = getObj(sId);
	this.styleObj = getStyleObj(sId);
	this.ready = true;
}






//***** MENUITEM FUNCTIONS *****

//menuItem: menuItem object constructor
function menuItem(sId,sText,sURL,oMenu,iHeight) 
{
	var sHighlightId = sId + "Highlight";
	var sCoverId = sId + "Cover";
	
	this.id = sId;
	this.highlightStyleObjId = sHighlightId;
	this.coverStyleObjId = sCoverId;
	this.menu = oMenu;
	this.hasSubMenu = false;
	this.subMenu = null;
	this.text = sText;
	this.url = sURL;
	this.visibility = false;
	this.width = oMenu.width;
	this.positioned = false;
	this.ready = false;
	this.iHeight = iHeight;
	this.html = null;
	this.styleObj = null;
	this.highlightStyleObjStyleObj = null;
	this.coverStyleObjStyleObj = null;
	this.spacerURL = oMenu.spacerURL;
	
	var oMenuset = oMenu.menuset;
	this.subImgURL = oMenuset.subImgURL;
	this.subImgHeight = oMenuset.subImgHeight;
	this.subImgWidth = oMenuset.subImgWidth;
	this.heightSingleTextLimit = oMenuset.heightSingleTextLimit;
	this.heightSingle = oMenuset.heightSingle;
	this.heightDouble = oMenuset.heightDouble;
	
	this.createHTML();	
	
	return this;
}
menuItem.prototype.show = showMenuItem;
menuItem.prototype.hide = hideMenuItem;
menuItem.prototype.highlightOn = highlightItemOn;
menuItem.prototype.highlightOff = highlightItemOff;
menuItem.prototype.createHTML = createMenuItemHTML;
menuItem.prototype.setPosition = setMenuItemPosition;
menuItem.prototype.getWidth = getMenuItemWidth;
menuItem.prototype.createObjects = createMenuItemObjects;
menuItem.prototype.addSubmenu = addSubmenu;

//setMenuItemPosition: positions the menu item relative to other items in its menu
function setMenuItemPosition()
{
	if (this.positioned)
	{
		return;
	}

	if (!this.ready)
	{
		this.createObjects();
	}
	
	var eMenu = this.menu;
	var iMenuItemLeft = eMenu.menuItemLeft;
	var iMenuItemTop = eMenu.menuItemTop;

	var oThis = this.styleObj;
	var oHighlight = this.highlightStyleObj;
	var oCover = this.coverStyleObj;
	
	if (mBrowser.isNS4)
	{
		oThis.left = iMenuItemLeft;
		oThis.top = iMenuItemTop;
		oHighlight.left = iMenuItemLeft;
		oHighlight.top = iMenuItemTop;
		oCover.left = iMenuItemLeft;
		oCover.top = iMenuItemTop;
	}
	else
	{
		if (mBrowser.isIE)
		{
			oThis.posLeft = iMenuItemLeft;
			oThis.posTop = iMenuItemTop;
			
			if (mBrowser.isMac)
			{
				oHighlight.posLeft = iMenuItemLeft;
				oHighlight.posTop = iMenuItemTop;
				oCover.posLeft = iMenuItemLeft;
				oCover.posTop = iMenuItemTop;
			}
		}
		else
		{
			oThis.left = iMenuItemLeft;
			oThis.top = iMenuItemTop;
			
			if (mBrowser.isMac)
			{
				oHighlight.left = iMenuItemLeft;
				oHighlight.top = iMenuItemTop;
				oCover.left = iMenuItemLeft;
				oCover.top = iMenuItemTop;
			}		
		}
	}
	
	this.positioned = true;
}

//showMenuItem: shows a menu item
function showMenuItem()
{
	this.styleObj.visibility = "visible";
	
	if (mBrowser.isNS4 || mBrowser.isMac)
	{
		this.highlightStyleObj.visibility = "hidden";
		this.coverStyleObj.visibility = "visible";
	}
	
	this.visibility = true;
}

//hideMenuItem: hides a menu item
function hideMenuItem()
{
	this.styleObj.visibility = "hidden";
	
	if (mBrowser.isNS4 || mBrowser.isMac)
	{
		this.highlightStyleObj.visibility = "hidden";
		this.coverStyleObj.visibility = "hidden";
	}
	
	this.visibility = false;
}

//highlightItemOn: turns on highlighting for a menu item
//shows submenu if necessary
function highlightItemOn()
{
	var oSubMenu = this.subMenu;

	if (mBrowser.isNS4 || mBrowser.isMac)
	{
		this.highlightStyleObj.visibility = "visible";
	}
	else
	{
		if (oSubMenu)
		{
			this.object.className = this.menu.id + "MenuItemHighlightParent";
		}
		else
		{
			this.object.className = this.menu.id + "MenuItemHighlight";
		}
	}
	
	//hide other menus
	var oMenu = this.menu;
	oMenu.menuset.DM_hideMenus(oMenu.id,true);
	
	//show the submenu if necessary
	if (oSubMenu)
	{
		oSubMenu.show();
	}
	
	clearTimeout(this.menu.menuset.timer);
}

//highlightItemOff: turns off highlighting for a menu item
function highlightItemOff()
{
	var oSubMenu = this.subMenu;

	if (mBrowser.isNS4 || mBrowser.isMac)
	{
		this.highlightStyleObj.visibility = "hidden";
	}
	else
	{
		if (oSubMenu)
		{
			this.object.className = this.menu.id + "MenuItemParent";
		}
		else
		{
			this.object.className = this.menu.id + "MenuItem";
		}
	}

	var iWhen = 1000;
	if (oSubMenu)
	{
		if (oSubMenu.visibility)
		{
			iWhen = 10000;
		}
	}
	//turn timer on
	this.menu.menuset.timer = setTimeout("DM_hideMenus()",iWhen);
}

//createMenuItemHTML: writes the menu item to the page
function createMenuItemHTML()
{
	var sClassPrefix = this.menu.id;
	var sId = this.id;
	var sText = this.text;
	var bIsNS4 = mBrowser.isNS4;
	var bIsMac = mBrowser.isMac;
	var sStyle = "";
	var sURL = this.url;
	var surl = sURL.toLowerCase();
	var sOnclick;
	
	if (surl.indexOf("javascript:")>=0) {
		sOnclick = sURL.substring(11,sURL.length-1);
	}
	else
	{
		sOnclick = "\"window.location.href='" + sURL + "';\"";
	}
	
	if (this.hasSubMenu)
	{
		var sSubImgURL = this.subImgURL;
		var iSubImgWidth = this.subImgWidth;
		var iSubImgHeight = this.subImgHeight;
		var iWidth = this.menu.width;
		var iTextWidth = iWidth - iSubImgWidth;

		if (bIsNS4 || bIsMac)
		{	
			//create the menu item
			var sMenuItem = "\n<div id='" + sId + "' class='" + sClassPrefix + "MenuItemParent'><table width='" + iWidth + "px' cellpadding='0' cellspacing='0' border='0' class='MenuItem'><tr><td class='MenuItemText' width='" + iTextWidth + "'>" + sText + "&nbsp;</td><td valign='top' width='" + iSubImgWidth + "'><img src='" + sSubImgURL + "' width='" + iSubImgWidth + "' height='" + iSubImgHeight + "' border='0' id='" + sId + "SMImg' name='" + sId + "SMImg'></td></tr></table></div>";
			
			//create the highlighted version
			sMenuItem += "\n<div id='" + sId + "Highlight' class='" + sClassPrefix + "MenuItemHighlightParent'><table width='" + iWidth + "px' cellpadding='0' cellspacing='0' border='0' class='MenuItem'><tr><td class='MenuItemText' width='" + iTextWidth + "'>" + sText + "&nbsp;</td><td valign='top' width='" + iSubImgWidth + "'><img src='" + sSubImgURL + "' width='" + iSubImgWidth + "' height='" + iSubImgHeight + "' border='0'></td></tr></table></div>";
		}
		else
		{
			//create the menu item
			var sMenuItem = "\n<div id='" + sId + "' class='" + sClassPrefix + "MenuItemParent'><table cellpadding='0' cellspacing='0' border='0' class='MenuItem'><tr><td " +  "onMouseover=\"DM_activeMenus.highlightOn('" + sId + "');\"  onMouseout=\"DM_activeMenus.highlightOff('" + sId + "');\" onclick=" + sOnclick + " class='MenuItemText'>" + sText + "&nbsp;</td><td " +  "onMouseover=\"DM_activeMenus.highlightOn('" + sId + "');\"  onMouseout=\"DM_activeMenus.highlightOff('" + sId + "');\" onclick=\"window.location.href='" + sURL + "';\" valign='top' width='" + iSubImgWidth + "'><img src='" + sSubImgURL + "' width='" + iSubImgWidth + "' height='" + iSubImgHeight + "' border='0' id='" + sId + "SMImg' name='" + sId + "SMImg'></td></tr></table></div>";
		}
	}
	else
	{
		if (bIsNS4 || bIsMac)
		{	
			//create the menu item
			var sMenuItem = "\n<div id='" + sId + "' class='" + sClassPrefix + "MenuItem'>" + sText + "</div>";
			
			//create the highlighted version
			sMenuItem += "\n<div id='" + sId + "Highlight' class='" + sClassPrefix + "MenuItemHighlight'>" + sText + "</div>";
		}
		else
		{
			//create the menu item
			var sMenuItem = "\n<div id='" + sId + "' class='" + sClassPrefix + "MenuItem' onMouseover=\"DM_activeMenus.highlightOn('" + sId + "');\" onMouseout=\"DM_activeMenus.highlightOff('" + sId + "');\" onclick=" + sOnclick + ">" + sText + "</div>";
		}
	}
	
	if (bIsNS4 || bIsMac)
	{
		//create the cover
		sMenuItem += "\n<div id='" + sId + "Cover' class='MenuItemCover'><a href=\"" + sURL + "\" onMouseover=\"DM_activeMenus.highlightOn('" + sId + "');\" onMouseout=\"DM_activeMenus.highlightOff('" + sId + "');\"><img src='" + this.spacerURL + "' height='100%' width='100%' border='0'></a></div>";
	}

	//write the menu to the page
	this.html = sMenuItem;
}

function getMenuItemWidth()
{
	var iWidth = this.width;
	
	if (!iWidth)
	{
		iWidth = getWidth(this.object);
	}
	return iWidth;
}

function createMenuItemObjects()
{
	var bIsIE = mBrowser.isIE;
	var bIsIE4 = mBrowser.isIE4;
	var bIsNS = mBrowser.isNS;
	var bIsNS4 = mBrowser.isNS4;
	var bIsMac = mBrowser.isMac;
	
	if (this.ready)
	{
		return;
	}
	
	var sId = this.id;
	var iHeight = this.iHeight;
	
	var oThis = getObj(sId);
	this.object = oThis;
	this.styleObj = getStyleObj(sId);
	if (bIsNS4 || bIsMac)
	{	var sHighlightId = sId + "Highlight";
		var sCoverId = sId + "Cover";
		var oHighlight = getObj(sHighlightId);
		var oCover = getObj(sCoverId);
		this.highlightStyleObj = getStyleObj(sHighlightId);
		this.coverStyleObj = getStyleObj(sCoverId);
	}
	
	var iHeightSingle = this.heightSingle;
	var iHeightSingleTextLimit = this.heightSingleTextLimit;
	if (this.text.length > iHeightSingleTextLimit)
	{
		iHeight = 2;
	}
	if (bIsNS || bIsMac || bIsIE4)
	{
		switch (iHeight)
		{
			case 2:
				var iHeightDouble = this.heightDouble;
				setHeight(this.object,iHeightDouble);
				if (bIsNS4 || bIsMac)
				{
					setHeight(oHighlight,iHeightDouble);
					setHeight(oCover,iHeightDouble);
				}
				//this.height = iHeightDouble;
				this.height = getHeight(this.object);
				break;
			default:
				setHeight(this.object,iHeightSingle);
				if (bIsNS4 || bIsMac)
				{
					setHeight(oHighlight,iHeightSingle);
					setHeight(oCover,iHeightSingle);
				}
				//this.height = iHeightSingle;
				this.height = getHeight(this.object);
				break;
		}
	}
	else
	{
		setHeight(oThis,iHeightSingle);
		this.height = getHeight(oThis);
	}
	
	this.ready = true;
}

//addSubMenu: creates a submenu and associates it with a menu item
function addSubmenu(sMenuAnchor,sParentAnchor)
{
	var sId = this.id;
	var oMenuset = this.menu.menuset;
	
	var oSubmenu = new menu(sId+"SM",sId,oMenuset,sMenuAnchor,sParentAnchor);
	oMenuset.appendMenu(oSubmenu);
	this.subMenu = oSubmenu;
	this.hasSubMenu = true;
	this.createHTML();
	
	return oSubmenu;
}

/* ------------------------------------------
Function name  - sb_setTopNav
Description - Initializes the top nav
------------------------------------------	*/
function sb_setTopNav(showHome) {
	var topNavMappings = getTopNavMappings();
	var currentPage = new String(document.location);
	var topNavIndex = -1;
	
	// Search through the topNavMappings for the current area
	// Highlight the correct Top Nav Image if the current area is found
	for (c=0;c<topNavMappings.imageCollection.length;c++) {
		var dirName = new String(topNavMappings.imageCollection[c].dirName);
		if (currentPage.indexOf(dirName) != -1) {
			section = topNavMappings.imageCollection[c].divId;
			topNavIndex = c;
			break;
			//return;
		} else if ((c == 0) && (showHome)){
			var dirFolder = dirName.substring(0, dirName.lastIndexOf("/"));
			var currentFolder = currentPage.substring(0, currentPage.lastIndexOf("/"));
			if (currentFolder.indexOf("htdocs/")) {
				currentFolder = currentFolder.substring(currentFolder.indexOf("htdocs/")+6);
			}	
			if (currentFolder == dirFolder) {	
				section = topNavMappings.imageCollection[c].divId;
				topNavIndex = c;
				break;
				//return;
			}
		}
	}
	
	if (topNavIndex > -1) {
		DM_activeMenus.currLocation = topNavMappings.imageCollection[topNavIndex].divId;
		topNavImage = getObj(topNavMappings.imageCollection[topNavIndex].imageId);
		oldSrc = topNavImage.src;
		topNavImage.src = topNavMappings.imageCollection[topNavIndex].onSrc;
		
		// Reset and MM_swapImgRestore image src
		a=document.MM_sr; 
		
		for(i=0; a && i<a.length && (x=a[i]) && x.oSrc; i++) {
		//	alert("i = "+i+"\nx.oSrc = "+x.oSrc);
			if (x.oSrc == oldSrc) {
				x.oSrc = topNavMappings.imageCollection[topNavIndex].onSrc;
			}
		}
	}
}