var stylesheet =""; 
var brVersion = navigator.appVersion.charAt(0);
var np=navigator.platform;
var nua=navigator.userAgent;

if(np.indexOf("Win")>=0){ 
if(nua.indexOf("ompatible")>=0) {
      stylesheet = "/js/in_win";
      } else {
      stylesheet = "/js/in_win_nn";
      }
}
else { 
      stylesheet = "/js/in_mac"; 
} 
if(stylesheet != ""){ 
      document.write('<meta http-equiv="Content-Style-Type" content="text/css">\n'); 
      document.write('<link rel="stylesheet" type="text/css" href="'+stylesheet+'.css">'); 
}