var _agent = navigator.userAgent.toLowerCase();

var _win = (_agent.indexOf('win') != -1);
var _mac = (_agent.indexOf('mac') != -1);

var _brover = parseInt(navigator.appVersion);

var _ie = (_agent.indexOf('msie') != -1);
var _ns = ((_agent.indexOf('mozilla') != -1) && (_agent.indexOf('compatible') == -1));
var _nsup = (_ns && (_brover >= 5));


if(_win){
 if(_ie){
    document.write('<link rel="stylesheet" href="../../../../css/winie.css" type="text/css">');
	}
 else if(_nsup){
    document.write('<link rel="stylesheet" href="../../../../css/winie.css" type="text/css">');
	}
 else{
    document.write('<link rel="stylesheet" href="../../../../css/winns.css" type="text/css">');
	}
}
else if(_mac){
 if(_ie){
    document.write('<link rel="stylesheet" href="../../../../css/macie.css" type="text/css">');
	}
 else if(_nsup){
    document.write('<link rel="stylesheet" href="../../../../css/macie.css" type="text/css">');
	}
 else{
    document.write('<link rel="stylesheet" href="../../../../css/macns.css" type="text/css">');
	}
}