// JavaScript Document
var layerNumShowing=1;

function init()
{
	if (navigator.appName == "Netscape")
	{
		layerStyleRef="layer.";
		layerRef="document.layers";
		styleSwitch="";
	}else if (navigator.appName == "Mozilla")
	{
		layerStyleRef="style.property";
		layerRef="document.getElementById";
		styleSwitch="";
	}else{
		layerStyleRef="layer.style.";
		layerRef="document.all";
		styleSwitch=".style";
	}
}

function showLayerNumber(number)
{
	var layerNumToShow=number;
	hideLayer(eval('"layer' + layerNumShowing+'"'));
	showLayer(eval('"layer' + layerNumToShow+'"'));
	layerNumShowing=layerNumToShow;	
}

function showLayer(layerName)
{
	eval(layerRef+'["'+layerName+'"]'+styleSwitch+'.visibility="visible"');
}
	
function hideLayer(layerName)
{
	eval(layerRef+'["'+layerName+'"]'+styleSwitch+'.visibility="hidden"');
}