var panelOn = 0;

// Return layer reference
function refLayer(layerID) {
	if (isDOM) {
		return document.getElementById(layerID);
	} else if (isNS4) {
		return document.layers[layerID];
	}
}

function showHideLayer(l,s,ps){
	if (!panelOn){
		layerRef = refLayer(l);
		if(isDOM){
			layerRef.style.visibility = s;
		} else if (isNS4){
			layerRef.visibility = s;
		}
		panelOn = ps;
	}
}

function closeLayer(l) {
		layerRef = refLayer(l);
		if(isDOM){
			layerRef.style.visibility = "hidden";
		} else if (isNS4){
			layerRef.visibility = "hidden";
		}
		panelOn = 0;
}