if (document.layers) {top.location.href="http://www.mozilla.org";}
if (document.all &&!document.getElementById) { //oops - MSIE ver 5
   top.location.href="http://www.microsoft.com/windows/ie/";}


if (navigator.appName == 'Netscape')
 var language = navigator.language;
else
 var language = navigator.browserLanguage;


if (language.indexOf('zh') > -1) document.location.href = 'ch/index.html';
 else if (language.indexOf('en') > -1) document.location.href = 'en/index.html';


else 
 document.location.href = 'en/index.html';