function showLayer(layerName, shadowLayerName)
	{
		if (document.getElementById) // Netscape 6 and IE 5+
	{
		var targetElement = document.getElementById(layerName);
		var shadowElement = document.getElementById(shadowLayerName);
			targetElement.style.top = shadowElement.style.top;
			targetElement.style.visibility = 'visible';
	}
	}

		function hideLayer(layerName)
	{
		if (document.getElementById) 
	{
		var targetElement = document.getElementById(layerName);
			targetElement.style.visibility = 'hidden';
	}
}