if 
((navigator.appVersion.indexOf("Mac") != -1) && (navigator.appName.indexOf("Netscape") != -1))
{
document.write('<link rel="stylesheet" href="styles/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="styles/macie.css" type="text/css">');
}
else if (navigator.appName == "Netscape" && document.getElementById){
document.write('<link rel=stylesheet href="styles/winns6.css" type="text/css">');
} 
else if (navigator.appName == "Netscape"){
document.write('<link rel=stylesheet href="styles/winns.css" type="text/css">');
}
else if 
((navigator.appVersion.indexOf("Win") != -1) && (navigator.appName.indexOf("Microsoft Internet Explorer") != -1))
{
document.write('<link rel="stylesheet" href="styles/winie.css" type="text/css">');
}
else
{
document.write('<link rel="stylesheet" href="styles/annan.css" type="text/css">');
}