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

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