var os = navigator.platform;
var brName = navigator.appName.charAt(0);
var brVer = navigator.appVersion.charAt(0);

if(os == "Win32"){
  if((brName == "N") && (brVer >= 4)){
    cssSrc = "win_ns.css";
    if(brVer >= 5){
      cssSrc = "win_ns6.css";
    }
  } else if((brName == "M") && (brVer >= 4)) {
    cssSrc = "win_ie.css";
  }
} else if(os == "MacPPC"){
  if((brName == "N") && (brVer >= 4)){
    cssSrc = "mac_ns.css";
  } else if((brName == "M") && (brVer >= 4)) {
    cssSrc = "mac_ie.css";
  } 
  
}else if(os == "MacIntel"){
  if((brName == "N") && (brVer >= 4)){
    cssSrc = "mac_ns.css";
  } else if((brName == "M") && (brVer >= 4)) {
    cssSrc = "mac_ie.css";
  } 
  
}
document.write("<LINK REL=\"stylesheet\" TYPE=\"text/css\" HREF=\"/css/"+cssSrc+"\">");
//document.write("<LINK REL=\"stylesheet\" TYPE=\"text/css\" HREF=\"C://Apache/htdocs/tokyocompo/css/"+cssSrc+"\">");