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)
{
if(eval(layerRef + layerName + endLayerRef + styleRef + ".visibility =='visible'"))
{
hideLayer(layerName);
return;
}
eval(layerRef + layerName + endLayerRef + styleRef + ".visibility = 'visible'");
}

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

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

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