var language;
if (navigator.appName == 'Netscape') {
    language = navigator.language;
}
else {
    language = navigator.browserLanguage; //IE
}
language = language.toLowerCase();
if (language == "zh-cn") {
    location.href = "main.htm";
}
//else
//{
//	location.href="main.htm";
//}
//var language = language.toLowerCase().indexOf('zh-en');
//if (language < 0){
// location.href="main.htm";
//}