if(navigator.userAgent.indexOf("Win") != -1){
document.write('<link href="../style2.css" rel="stylesheet" type="text/css">');
}
if(navigator.userAgent.indexOf("Mac") != -1){
document.write('<link href="../style-mac.css" rel="stylesheet" type="text/css">');
}else{
document.write('<link href="../style2.css" rel="stylesheet" type="text/css">');
}