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

//alert(browser+" "+browserNum);

	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 + ".display =='block'"))
		{
		hideLayer(layerName);
		return false;
		}
		eval(layerRef + layerName + endLayerRef + styleRef + ".display = 'block'");
		return false;
	}

   function hideLayer(layerName)
   	{
   		//alert(layerRef + layerName + endLayerRef + styleRef + ".display = 'none'")
   		eval(layerRef + layerName + endLayerRef + styleRef + ".display = 'none'");
   	}