browser = navigator.appName;
browserNum = parseInt(navigator.appVersion);

if ((browser == "Netscape") && (browserNum < 5))
{
	layerRef = "document.layers['";
	endLayerRef = "']";
	style = "";
}
else if ((browser == "Netscape") && (browserNum >= 5))
{
	layerRef = "document.getElementById('";
	styleRef = ".style";
	endLayerRef = "')";
}
else
{
	layerRef = "document.all['";
	endLayerRef = "']";
	styleRef = ".style";
}

function showLayer(layerName)
{
	eval(layerRef + layerName + endLayerRef + styleRef + ".visibility = 'visible'");
}

function hideLayer(layerName)
{
	eval(layerRef + layerName + endLayerRef + styleRef + ".visibility = 'hidden'");
}