var nr = 0;
function MenuOn(n) {
	setMenu('sub' + n);
	nr = n;
}

function MenuOff(n) {
	if (nr != n && nr > 0) {
		resetMenu('sub' + nr);
	}
}

function toggleMenu(objectID) {
	if (isAll || isID) {
		domStyle = findDOM(objectID,1);
		if (domStyle.display =='block')  domStyle.display='none';
		else domStyle.display='block';
	}
	else {
		destination = objectID + '.html';
		self.location = destination;
	}
	return;
}

function setMenu(obj) {
    var f_tmp = document.getElementsByTagName('ul')

    for (var i = 0;i < f_tmp.length;i++)
        if (f_tmp[i].id.indexOf('sub') >= 0) {
            if (f_tmp[i].id == obj)
                f_tmp[i].style.display = 'block'
            else
                f_tmp[i].style.display = 'none'
        }
}

function resetMenu(objectID) {
	if (isAll || isID) {
		domStyle = findDOM(objectID,1);
		if (domStyle.display =='block')  domStyle.display='none';
		else domStyle.display='none';
	}
	else {
		destination = objectID + '.html';
		self.location = destination;
	}
	return;
}

var isDHTML = 0;
var isLayers = 0;
var isAll = 0;
var isID = 0;

if (document.getElementById) {isID = 1; isDHTML = 1;}
else {
browserVersion = parseInt(navigator.appVersion);
if ((navigator.appName.indexOf('Netscape') != -1) && (browserVersion == 4)) {isLayers = 1; isDHTML = 1;}
else {
if (document.all) {isAll = 1; isDHTML = 1;}
}}

function findDOM(objectID,withStyle) {
var menuArea = "menuArea";
	if (withStyle == 1) {
		if (isID) { return (document.getElementById(objectID).style) ; }
		else { 
			if (isAll) { return (document.all[objectID].style); }
		else {
			if (isLayers) { return (document.layers[menuArea].layers[objectID]); }
		};}
	}
	else {
		if (isID) { return (document.getElementById(objectID)) ; }
		else { 
			if (isAll) { return (document.all[objectID]); }
		else {
			if (isLayers) { return (document.layers[menuArea].layers[objectID]); }
		};}
	}
}