var Version4 = (parseInt(navigator.appVersion)>=4);
var Version5 = (parseInt(navigator.appVersion)>=5);
var NS4 = (navigator.appName == "Netscape" && Version4);

if (NS4)
	document.write('<LINK REL="stylesheet" HREF="HTML/EstiloUnedNS.css" TYPE="text/css">');
else
	document.write('<LINK REL="stylesheet" HREF="HTML/EstiloUned.css" TYPE="text/css">');