var isDOM = (document.getElementById ? true : false); 
var isIE4 = ((document.all && !isDOM) ? true : false);
var isNS4 = (document.layers ? true : false);
	function getRef(id) {
		if (isDOM) return document.getElementById(id);
		if (isIE4) return document.all[id];
		if (isNS4) return document.layers[id];
	}
	function getSty(id) {
		return (isNS4 ? getRef(id) : getRef(id).style);
	} 
// Hide timeout.
var popTimer = 0;
// Array showing highlighted menu items.
var litNow = new Array();

function popOver(menuNum, itemNum) {
clearTimeout(popTimer);
hideAllBut(menuNum);
litNow = getTree(menuNum, itemNum);
changeCol(litNow, true);
targetNum = menu[menuNum][itemNum].target;
if (targetNum > 0) {
thisX = parseInt(menu[menuNum][0].ref.left) + parseInt(menu[menuNum][itemNum].ref.left);
thisY = parseInt(menu[menuNum][0].ref.top) + parseInt(menu[menuNum][itemNum].ref.top);
with (menu[targetNum][0].ref) {
left = parseInt(thisX + menu[targetNum][0].x);
top = parseInt(thisY + menu[targetNum][0].y);
visibility = 'visible';
      }
   }
}
function popOut(menuNum, itemNum) {
if ((menuNum == 0) && !menu[menuNum][itemNum].target)
hideAllBut(0)
else
popTimer = setTimeout('hideAllBut(0)', 500);
}
function getTree(menuNum, itemNum) {

// Array index is the menu number. The contents are null (if that menu is not a parent)
// or the item number in that menu that is an ancestor (to light it up).
itemArray = new Array(menu.length);

while(1) {
itemArray[menuNum] = itemNum;
// If we've reached the top of the hierarchy, return.
if (menuNum == 0) return itemArray;
itemNum = menu[menuNum][0].parentItem;
menuNum = menu[menuNum][0].parentMenu;
   }
}

// Pass an array and a boolean to specify colour change, true = over colour.
function changeCol(changeArray, isOver) {
for (menuCount = 0; menuCount < changeArray.length; menuCount++) {
if (changeArray[menuCount]) {
newCol = isOver ? menu[menuCount][0].overCol : menu[menuCount][0].backCol;
// Change the colours of the div/layer background.
with (menu[menuCount][changeArray[menuCount]].ref) {
if (isNS4) bgColor = newCol;
else backgroundColor = newCol;
         }
      }
   }
}
function hideAllBut(menuNum) {
var keepMenus = getTree(menuNum, 1);
for (count = 0; count < menu.length; count++)
if (!keepMenus[count])
menu[count][0].ref.visibility = 'hidden';
changeCol(litNow, false);
}

// *** MENU CONSTRUCTION FUNCTIONS ***

function Menu(isVert, popInd, x, y, width) {
// True or false - a vertical menu?
this.isVert = isVert;
// The popout indicator used (if any) for this menu.
this.popInd = popInd
// Position and size settings.
this.x = x;
this.y = y;
this.width = width;
// Parent menu and item numbers, indexed later.
this.parentMenu = null;
this.parentItem = null;
// Reference to the object's style properties (set later).
this.ref = null;
}

function Item(text, href, frame, length, spacing, target) {
this.text = text;
this.href = href;
this.frame = frame;
this.length = length;
this.spacing = spacing;
this.target = target;
// Reference to the object's style properties (set later).
this.ref = null;
}

function writeMenus() {
if (!isDOM && !isIE4 && !isNS4) return;

for (currMenu = 0; currMenu < menu.length; currMenu++) with (menu[currMenu][0]) {
// Variable for holding HTML for items and positions of next item.
var str = '', itemX = 0, itemY = 0;

// Remember, items start from 1 in the array (0 is menu object itself, above).
// Also use properties of each item nested in the other with() for construction.
for (currItem = 1; currItem < menu[currMenu].length; currItem++) with (menu[currMenu][currItem]) {
var itemID = 'menu' + currMenu + 'item' + currItem;

if(currMenu != 0) {
var url = '/images/menu/main_' + text + '.gif';
var urlon = '/images/menu/main_' + text + '_on.gif';

preload(text, url, urlon);
}

// The width and height of the menu item - dependent on orientation!
var w = (isVert ? width : length);
var h = (isVert ? length : width);

// Create a div or layer text string with appropriate styles/properties.
if (isDOM || isIE4) {
str += '<div id="' + itemID + '" style="position: absolute; left: ' + itemX + '; top: ' + itemY + '; width: ' + w + '; height: ' + h + '; visibility: inherit;"';
}
if (isNS4) {
str += '<layer id="' + itemID + '" left="' + itemX + '" top="' + itemY + '" width="' +  w + '" height="' + h + '" visibility="inherit" ';
}
// Add mouseover handlers and finish div/layer.
str += 'onMouseOver="popOver(' + currMenu + ',' + currItem + ')" onMouseOut="popOut(' + currMenu + ',' + currItem + ')">';

// Add contents of item (default: table with link inside).
// In IE/NS6+, add padding if there's a border to emulate NS4's layer padding.
// If a target frame is specified, also add that to the <a> tag.

str += '<table width="' + (w - 8) + '" border="0" cellspacing="0" cellpadding="0"><tr><td align="left" height="14" nowarp><a href="' + href + '"';
if(currMenu != 0) {
str += 'onMouseOver="on(this.id)" onMouseOut="off(this.id)" id="'+ text + '"';
}
str += (frame ? ' target="' + frame + '">' : '>');
str += '<img src="/images/menu/main_' + text + '.gif" name="' + text + '" border="0"></a></td>';
if (target > 0) {

// Set target's parents to this menu item.
menu[target][0].parentMenu = currMenu;
menu[target][0].parentItem = currItem;

// Add a popout indicator.
if (popInd) str += '<td align="right">' + popInd + '</td>';
}
str += '</tr></table>' + (isNS4 ? '</layer>' : '</div>');

if (isVert) itemY += length + spacing;
else itemX += length + spacing;
}
if (isDOM) {
var newDiv = document.createElement('div');
document.getElementsByTagName('body').item(0).appendChild(newDiv);
newDiv.innerHTML = str;
ref = newDiv.style;
ref.position = 'absolute';
ref.visibility = 'hidden';
}

// Insert a div tag to the end of the BODY with menu HTML in place for IE4.
if (isIE4) {
document.body.insertAdjacentHTML('beforeEnd', '<div id="menu' + currMenu + 'div" ' + 'style="position: absolute; visibility: hidden">' + str + '</div>');
ref = getSty('menu' + currMenu + 'div');
}

// In NS4, create a reference to a new layer and write the items to it.
if (isNS4) {
ref = new Layer(0);
ref.document.write(str);
ref.document.close();
}

for (currItem = 1; currItem < menu[currMenu].length; currItem++) {
itemName = 'menu' + currMenu + 'item' + currItem;
if (isDOM || isIE4) menu[currMenu][currItem].ref = getSty(itemName);
if (isNS4) menu[currMenu][currItem].ref = ref.document[itemName];
   }
}
with(menu[0][0]) {
ref.left = x;
ref.top = y;
ref.visibility = 'visible';
   }
}

var menu = new Array();

var leftDiv = '15';
var defLength = 22;

// Menu 0 is the special, 'root' menu from which everything else arises.
menu[0] = new Array();
// A non-vertical menu with a few different colours and no popout indicator, as an example.
// *** MOVE ROOT MENU AROUND HERE ***  
menu[0][0] = new Menu(false, '', leftDiv, 171, 15);
menu[0][1] = new Item('info', 'information/index.htm', '', 104, 9, 1);
menu[0][2] = new Item('res', 'resources/index.htm', '', 100, 9, 2);
// menu[0][3] = new Item('memarea', 'membercentre/index.htm', '', 139, 10, 3);
// for winter sports
menu[0][3] = new Item('memarea_skiing', 'membercentre/index.htm', '', 139, 10, '');

// Information menu.
menu[1] = new Array();
menu[1][0] = new Menu(true, '>', 0, 25, 150);
menu[1][1] = new Item('info_ask', 'information/faq.htm', '', 16, 0, 0);
menu[1][2] = new Item('info_learn', 'information/guidebook.htm', '', 14, 0, 0);
menu[1][3] = new Item('info_prepare', 'resources/bookmakers.htm', '', 14, 0, 0);
menu[1][4] = new Item('info_search', 'information/spreadsheets.htm', '', 14, 0, 0);
menu[1][5] = new Item('info_surf', 'information/arbsurfer.htm', '', 14, 0, 0);
menu[1][6] = new Item('info_trade', 'information/arbalarm.htm', '', 14, 0, 0);
menu[1][7] = new Item('info_gettingstarted', 'information/whatnext.htm', '', 14, 0, 0);
menu[1][8] = new Item('info_specialoffers', 'information/specialoffer.htm', '', 14, 0, 0);
menu[1][9] = new Item('info_buynow', 'resources/buynow.htm', '', 16, 0, 0);


// Resources menu.
menu[2] = new Array();
menu[2][0] = new Menu(true, '>', 0, 25, 150);
menu[2][1] = new Item('res_contact', 'resources/contact.htm', '', 16, 0, 0);
menu[2][2] = new Item('res_meetteam', 'resources/zrateam.htm', '', 14, 0, 0);
menu[2][3] = new Item('res_bookmakers', 'resources/bookmakers.htm', '', 14, 0, 0);
menu[2][4] = new Item('res_newsletters', 'newsletters/index.htm', '', 14, 0, 0);
menu[2][5] = new Item('res_finservs', 'resources/financialservices.htm', '', 14, 0, 0);
menu[2][6] = new Item('res_calendar', 'resources/calendar.htm', '', 14, 0, 0);
menu[2][7] = new Item('res_courseupdates', 'information/updateguidebook.htm', '', 14, 0, 0);
menu[2][8] = new Item('res_converstables', 'resources/conversiontables.htm', '', 14, 0, 0);
// menu[2][9] = new Item('res_oddscomparison', 'resources/soccer.htm', '', 14, 0, 0);
menu[2][9] = new Item('res_previousresults', 'previousresults/index.htm', '', 14, 0, 0);
menu[2][10] = new Item('res_buynow', 'resources/buynow.htm', '', 16, 0, 0);


// Members Area menu.
// menu[3] = new Array();
// menu[3][0] = new Menu(true, '>', 0, 25, 150);
// menu[3][1] = new Item('memarea_trading', 'membercentre/index.htm', '', 16, 0, 0);
// menu[3][1] = new Item('memarea_administration', 'membercentre/index.htm', '', 14, 0, 0);
//menu[3][2] = new Item('memarea_join', 'resources/buynow.htm', '', 16, 0, 0);


var popOldWidth = window.innerWidth;
nsResizeHandler = new Function('if (popOldWidth != window.innerWidth) location.reload()');


if (isNS4) document.captureEvents(Event.CLICK);
document.onclick = clickHandle;

function clickHandle(evt)
{
 if (isNS4) document.routeEvent(evt);
 hideAllBut(0);
}

var browserOK = false;
var pics;
browserOK = true;
pics = new Array();
var objCount = 0; 

// function on(name) {
// 	document.images[name].src = 'images/menu/main_' + name + '_on.gif';
// }

// function off(name) {
// 	document.images[name].src = 'images/menu/main_' + name + '.gif';
// }

var browserOK = false;
var pics;
browserOK = true;
menupics = new Array();
var objCount = 0; 
function preloadmenu(name, first, second) {
		if (browserOK) {
		menupics[objCount] = new Array(0);
		menupics[objCount][0] = new Image();
		menupics[objCount][0].src = first;
		menupics[objCount][1] = new Image();
		menupics[objCount][1].src = second;
		menupics[objCount][2] = name;
		objCount++;
	}
}