var menuColor = "#A0A0FF"
var menuActive = 0
var onLayer
var option1
var option2
var option3
var option4
var timeOn = null

var bName = navigator.appName;
var bVer = parseInt(navigator.appVersion);
var NS4 = (bName == "Netscape" && bVer >= 4);
var IE4 = (bName == "Microsoft Internet Explorer" && bVer >= 4);

if (navigator.appName == "Netscape")
{
	layerStyleRef="layer.";
	layerRef="document.layers";
	styleSwitch="";
}
else
{
	layerStyleRef="layer.style.";
	layerRef="document.all";
	styleSwitch=".style";
}

function showMenu(layerName)
{
	if (NS4 || IE4)
	{
		if (timeOn != null)
		{
			clearTimeout(timeOn);
            hideMenu(onLayer);
		}

		eval(layerRef+'["'+layerName+'"]'+styleSwitch+'.visibility="visible"');
		onLayer = layerName
        
	}
}

function hideMenu(layerName)
{
	if (menuActive == 0)
		eval(layerRef+'["'+layerName+'"]'+styleSwitch+'.visibility="hidden"');
        MM_swapImage(option1,'',option3,1);
}

function outTimer()
{
	if (NS4 || IE4)
		timeOn = setTimeout("timerOut()",50)
}

function timerOut(layerName)
{
	if (menuActive == 0)
		hideMenu(onLayer)
}

function menuOver()
{
	clearTimeout(timeOn)
	menuActive = 1
}

function menuOut()
{
	menuActive = 0 
	timeOn = setTimeout("hideMenu(onLayer)", 50)
}