var browser_type=navigator.appName
var browser_version=parseInt(navigator.appVersion)

//NS 6
if (browser_type=="Netscape"&&browser_version>=5)
document.write('<link href="http://www.unav.es/un/includes/css/docenciaydepartamentos_ns6.css" rel="stylesheet" type="text/css" />')
//IE 4+
else if (browser_type=="Microsoft Internet Explorer"&&browser_version>=4)
document.write('<link href="http://www.unav.es/un/includes/css/docenciaydepartamentos_ie4.css" rel="stylesheet" type="text/css" />')
//NS4+
else if (browser_type=="Netscape"&&browser_version>=4)
document.write('<link href="http://www.unav.es/un/includes/css/docenciaydepartamentos_ns4.css" rel="stylesheet" type="text/css" />')
//Default goto page (NOT NS 4+ and NOT IE 4+)
else
document.write('<link href="http://www.unav.es/un/includes/css/docenciaydepartamentos_otros.css" rel="stylesheet" type="text/css" />')