var ua = navigator.userAgent.toLowerCase(); 
this.isNS        = ( (this.isGecko) ? (ua.indexOf('netscape') != -1) : ( (ua.indexOf('mozilla') != -1) && (ua.indexOf('spoofer') == -1) && (ua.indexOf('compatible') == -1) && (ua.indexOf('opera') == -1) && (ua.indexOf('webtv') == -1) && (ua.indexOf('hotjava') == -1) ) );
this.versionMinor = parseFloat(navigator.appVersion); 
this.versionMajor = parseInt(this.versionMinor); 
this.isNS4x = (this.isNS && this.versionMajor == 4);
var timeOn = setTimeout("hidemenus()",5000)

var M="";
var cMenu="";
var obj="";

function hidemenus()
{
	if (! this.isNS4x)
	{
	document.getElementById('about').style.visibility = "hidden";
	document.getElementById('vas').style.visibility = "hidden";
	document.getElementById('members').style.visibility = "hidden";
	document.getElementById('needva').style.visibility = "hidden";
	document.getElementById('resources').style.visibility = "hidden";
	}
	else
	{
	clearTimeout(timeOn);
	var layerStyleRef="layer.";
	var layerRef="document.layers";
	var styleSwitch="";
	var layerVis="show";
	var layerHid="hide";
	eval(layerRef+'["'+'about'+'"]'+styleSwitch+'.visibility="'+layerHid+'"');
	eval(layerRef+'["'+'vas'+'"]'+styleSwitch+'.visibility="'+layerHid+'"');
	eval(layerRef+'["'+'members'+'"]'+styleSwitch+'.visibility="'+layerHid+'"');
	eval(layerRef+'["'+'needva'+'"]'+styleSwitch+'.visibility="'+layerHid+'"');
	eval(layerRef+'["'+'resources'+'"]'+styleSwitch+'.visibility="'+layerHid+'"');
	}
}

function showmenu(M)
{
	hidemenus();
	if (! this.isNS4x)
	{
	document.getElementById(M).style.visibility = "visible";
	}
	else
	{
	layerStyleRef="layer.";
	layerRef="document.layers";
	styleSwitch="";
	layerVis="show";
	layerHid="hide";
	eval(layerRef+'["'+M+'"]'+styleSwitch+'.visibility="'+layerVis+'"');
	timeOn = setTimeout("hidemenus()",5000)
	}
}