var ie4 = (document.all) ? true:false;
var ns4 = (document.layers) ? true:false;
var ns6 = (document.getElementById && !document.all) ? true:false;

var activenav = basenav;

var timerflag = 0;

function activatenav(whichnav) {
	if (timerflag != 0) {
		cleartimer();
	}
	if (ie4) {
		eval("document.all.divnav" + activenav + ".style.visibility = 'hidden'");
		eval("document.all.divsubnav" + activenav + ".style.visibility = 'hidden'");
		activenav = whichnav;
		eval("document.all.divnav" + whichnav + ".style.visibility = 'visible'");
		eval("document.all.divsubnav" + whichnav + ".style.visibility = 'visible'");
	} else if (ns4) {
		eval("document.layers.divnav" + activenav + ".visibility = 'hidden'");
		eval("document.layers.divsubnav" + activenav + ".visibility = 'hidden'");
		activenav = whichnav;
		eval("document.layers.divnav" + whichnav + ".visibility = 'visible'");
		eval("document.layers.divsubnav" + whichnav + ".visibility = 'visible'");
	} else if (ns6) {
		eval("document.getElementById('divnav" + activenav + "').style.visibility = 'hidden'");
		eval("document.getElementById('divsubnav" + activenav + "').style.visibility = 'hidden'");
		activenav = whichnav;
		eval("document.getElementById('divnav" + whichnav + "').style.visibility = 'visible'");
		eval("document.getElementById('divsubnav" + whichnav + "').style.visibility = 'visible'");
	}
}

function activatesectnav(whichnav) {
	if (ie4) {
		eval("document.all.divsectnav" + activesectnav + ".style.visibility = 'hidden'");
		activesectnav = whichnav;
		eval("document.all.divsectnav" + whichnav + ".style.visibility = 'visible'");
	} else if (ns4) {
		eval("document.layers.divsectnav" + activesectnav + ".visibility = 'hidden'");
		activesectnav = whichnav;
		eval("document.layers.divsectnav" + whichnav + ".visibility = 'visible'");
	} else if (ns6) {
		eval("document.getElementById('divsectnav" + activesectnav + "').style.visibility = 'hidden'");
		activesectnav = whichnav;
		eval("document.getElementById('divsectnav" + whichnav + "').style.visibility = 'visible'");
	}
}

function deactivatesectnav(whichnav) {
	if (ie4) {
		eval("document.all.divsectnav" + activesectnav + ".style.visibility = 'hidden'");
		activesectnav = basesectnav;
		eval("document.all.divsectnav" + basesectnav + ".style.visibility = 'visible'");
	} else if (ns4) {
		eval("document.layers.divsectnav" + activesectnav + ".visibility = 'hidden'");
		activesectnav = basesectnav;
		eval("document.layers.divsectnav" + basesectnav + ".visibility = 'visible'");
	} else if (ns6) {
		eval("document.getElementById('divsectnav" + activesectnav + "').style.visibility = 'hidden'");
		activesectnav = basesectnav;
		eval("document.getElementById('divsectnav" + basesectnav + "').style.visibility = 'visible'");
	}
}


// Timer functions

function settimer() {
	timer = setTimeout('activatenav(basenav);',1000);
	timerflag = 1;
}

function cleartimer() {
	if (timerflag != 0) {
		clearTimeout(timer);
	}
}


function resizer() {
//	document.location = this.document.location;
}

function opentimeline() {
	var newwin = window.open('../experience/timeline/19071932.html','timeline','width=640,height=320,location=no,scrollbars=no,menubar=no,toolbar=no,resizable=no');
}

function open333() {
	if (basenav == 'home') {
		var newwin = window.open('experience/333/flashdetect.html','333','width=740,height=364,location=no,scrollbars=no,menubar=no,toolbar=no,resizable=no');
	} else {
		var newwin = window.open('../experience/333/flashdetect.html','333','width=740,height=364,location=no,scrollbars=no,menubar=no,toolbar=no,resizable=no');
	}
}



// Copyright Year
function y2k(year) {
	if (year < 2000) {		
		year += 1900;
	}
	return year;
}
var datestring = ''; 
function writedate() {
	var today = new Date(); 
	var year = y2k(today.getYear()); 
	datestring = year;
}
writedate();