var plats = navigator.platform;
var bName = navigator.appName.charAt(0);
var bVers = navigator.appVersion.charAt(0);
var bPath ="";


if(plats == "Win32"){
  if((bName == "N") && (bVers >= 4)){
    bPath = "../css2/win_nc";
  } else if((bName == "M") && (bVers >= 4)) {
    bPath = "../css2/win_ie";
  }
} else if(plats == "MacPPC"){
  if((bName == "N") && (bVers >= 4)){
  bPath = "../css2/mac_nc";
  } else if((bName == "M") && (bVers >= 4)) {
    bPath = "../css2/mac_ie";
  }
}

if(bPath != ""){
document.write('<'+'LINK REL="StyleSheet" TYPE="text/css" HREF="'+bPath+'.css"'+'>');
}