if 
((navigator.appVersion.indexOf("Mac") != -1) && (navigator.appName.indexOf("Netscape") != -1))
{
document.write('<link rel="stylesheet" href="http://www.janusinfo.se/gravreg/ext/css/macns.css" type="text/css">');
}
else if 
((navigator.appVersion.indexOf("Mac") != -1) && (navigator.appName.indexOf("Microsoft Internet Explorer") != -1))
{
document.write('<link rel="stylesheet" href="http://www.janusinfo.se/gravreg/ext/css/macie.css">');
}
else if 
((navigator.appVersion.indexOf("Win") != -1) && (navigator.appName.indexOf("Netscape") != -1))
{
document.write('<link rel="stylesheet" href="http://www.janusinfo.se/gravreg/ext/css/winns.css">');
}
else if 
((navigator.appVersion.indexOf("Win") != -1) && (navigator.appName.indexOf("Microsoft Internet Explorer") != -1))
{
document.write('<link rel="stylesheet" href="http://www.janusinfo.se/gravreg/ext/css/janus.css">');
}
else
{
document.write('<link rel="stylesheet" href="http://www.janusinfo.se/gravreg/ext/css/annan.css">');
}