var vN = navigator.appVersion.charAt(0);
var bN = navigator.appName.charAt(0);
var Mac = (navigator.appVersion.indexOf("Mac") > -1)
var cN = "";
var oN= navigator.userAgent.toUpperCase();
var Unix = (oN.indexOf("X11") > -1)

function chkbwr(){
if(Mac){
if(bN=="M"){cN="mie5";}
else{if(vN < 5){cN="mnn4";}
else{cN="mnn6";}
}
}
else{if(bN=="M"){cN="wie5";}
else{if(vN < 5){cN="wnn4";}
else{cN="wnn6";}
}
}
if(Unix){
cN="unn6";
}
document.write("<link rel='stylesheet' href='/css/"+cN+".css' type='text/css'>");
}

chkbwr();