layerRef = ""
styleRef = ""
oldLayer = ""

if (navigator.appName == "Netscape")
	{
	layerRef = ".layers"
	styleRef = ""
	}
else  //for IE
	{
	layerRef = ".all"
	styleRef = ".style"
	}

function showlayer(layername)
{
	if (oldLayer)
		{
		eval("document" + layerRef + "[oldLayer]" + styleRef + ".visibility = 'hidden'")
		}

	eval("document" + layerRef + "[layername]" + styleRef + ".visibility = 'visible'")
	oldLayer = layername
	divLayer = layername
	//alert("divlayer=["+oldLayer+"]")
	//document.write("divlayer=["+oldLayer+"]")
}

function hidelayer(layername)
{
	eval("document" + layerRef + "[layername]" + styleRef + ".visibility = 'hidden'")
}

/************************************************/