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);
} 

var popTimer = 0;
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) {
	itemArray = new Array(menu.length);
	while(1) {
		itemArray[menuNum] = itemNum;
		if (menuNum == 0) return itemArray;
		itemNum = menu[menuNum][0].parentItem;
		menuNum = menu[menuNum][0].parentMenu;
	}
}

function changeCol(changeArray, isOver) {
	for (menuCount = 0; menuCount < changeArray.length; menuCount++) {
		if (changeArray[menuCount]) {
			newCol = isOver ? menu[menuCount][0].overCol : menu[menuCount][0].backCol;
			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);
}

function Menu(isVert, popInd, x, y, width, overCol, backCol, borderClass, textClass) {
	this.isVert = isVert;
	this.popInd = popInd
	this.x = x;
	this.y = y;
	this.width = width;
	this.overCol = overCol;
	this.backCol = backCol;
	this.borderClass = borderClass;
	this.textClass = textClass;
	this.parentMenu = null;
	this.parentItem = null;
	this.ref = null;
}

function Item(text, href, frame, length, spacing, target, title) {
	this.text = text;
	this.href = href;
	this.frame = frame;
	this.length = length;
	this.spacing = spacing;
	this.target = target;
	this.ref = null;
	this.title = title;
}

function writeMenus() {
	if (!isDOM && !isIE4 && !isNS4) return;
	for (currMenu = 0; currMenu < menu.length; currMenu++) with (menu[currMenu][0]) {
		var str = '', itemX = 0, itemY = 0;
		for (currItem = 1; currItem < menu[currMenu].length; currItem++) with (menu[currMenu][currItem]) {
			var itemID = 'menu' + currMenu + 'item' + currItem;
			var w = (isVert ? width : length);
			var h = (isVert ? length : width);
			if (isDOM || isIE4) {
				str += '<div id="' + itemID + '" style="position: absolute; left: ' + itemX + '; top: ' + itemY + '; width: ' + w + '; height: ' + h + '; visibility: inherit; ';
				if (backCol) str += 'background: ' + backCol + '; ';
				str += '" ';
			}
			if (isNS4) {
				str += '<layer id="' + itemID + '" left="' + itemX + '" top="' + itemY + '" width="' +  w + '" height="' + h + '" visibility="inherit" ';
				if (backCol) str += 'bgcolor="' + backCol + '" ';
			}
			if (borderClass) str += 'class="' + borderClass + '" ';
			if (title) str += 'title="' + title + '" ';
			str += 'onMouseOver="popOver(' + currMenu + ',' + currItem + ')" onMouseOut="popOut(' + currMenu + ',' + currItem + ')">';
			str += '<table width="' + (w - 8) + 'border="0" cellspacing="0" cellpadding="' + (!isNS4 && borderClass ? 3 : 0) + '"><tr><td align="left" height="' + (h - 7) + '">' + '<a class="' + textClass + '" href="' + href + '"' + (frame ? ' target="' + frame + '">' : '>') + text + '</a></td>';
			if (target > 0) {
				menu[target][0].parentMenu = currMenu;
				menu[target][0].parentItem = currItem;
				if (popInd) str += '<td class="' + textClass + '" 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';
		}
		
		if (isIE4) {
			document.body.insertAdjacentHTML('beforeEnd', '<div id="menu' + currMenu + 'div" ' + 'style="position: absolute; visibility: hidden">' + str + '</div>');
			ref = getSty('menu' + currMenu + 'div');
		}
		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 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);
}
function moveRoot() {
	with(menu[0][0].ref) left = ((parseInt(left) < 100) ? 100 : 5);
}