var blnReset = false;

function showtopnav(menuname)
{
	resettopnav();
	
	showLayer(menuname);
	
	
	blnReset = false;
}

function resettopnav()
{
	hideLayer('Home');
	hideLayer('About Us');
	hideLayer('Products');
	hideLayer('Applications');
	hideLayer('Testimonials');
	hideLayer('Events & Links');
	hideLayer('Press Room');
	hideLayer('Order Forms');
	hideLayer('Contact Us');
	hideLayer('Partners');
	
	blnReset = false;
}

function settimedreset()
{
	blnReset = true;
	setTimeout('timedresetnav()', 800);
}

function timedresetnav()
{
	if(blnReset)
	{
		resettopnav();
	}
}

function showLayer(layerName)
{
	if(document.all) // IE
	{
		document.all[layerName].style.visibility = 'visible';
	}
	else if(document.layers) // NS
	{
 		document.layers[layerName].visibility = 'visible';
	}
	else // DOM
	{
		document.getElementById(layerName).style.visibility = 'visible';
	}
}

function hideLayer(layerName)
{
	if(document.all) // IE
	{
		document.all[layerName].style.visibility = 'hidden';
	}
	else if(document.layers) // NS
	{
		document.layers[layerName].visibility = 'hidden';
	}
	else // DOM
	{
		document.getElementById(layerName).style.visibility = 'hidden';
	}
}

function imgOn(imgName)
{
	if(document.images)
	{
		document[imgName].src = eval(imgName + "On.src");
	}
}

function imgOff(imgName)
{
	if(document.images)
	{
		document[imgName].src = eval(imgName + "Off.src");
	}
}