ie4 = ((navigator.appName == "Microsoft Internet Explorer") && (parseInt(navigator.appVersion) >= 4 ))
ns4 = ((navigator.appName == "Netscape") && (parseInt(navigator.appVersion) >= 4 ))

if (ns4) {    
	layerRef="document.layers";    
	styleRef="";
	} 
else {
    layerRef="document.all";    
	styleRef=".style";
	}