识别访客是否国内，跳转相应页面

[timyork]

我编了一小段javascript代码放在网页的head中，用来检测访问者的地区，如果是来自中国，则转到中文页面，否则显示本页（英文页面）。我用访问者的电脑的时区设置是否为8，来判断是否是来自中国，（当然新加坡，马来，菲律宾等同一时区的会被误判，但来自这三个地方的访问很少。如果能加上判断访客电脑使用的语言就更完美了，不知有谁能改）。代码如下：

<script language="JavaScript">
x = new Date();
var tim = -x.getTimezoneOffset()/60;
if (tim = 8)
{
window.location='chinese.htm'
}
</script>

但测试时无论时区设置怎样改变，或者改变tim的判断值比如改为9而不是8，总是跳转到中文页面chinese.htm.
有谁能帮忙检查一下？

[timyork]

Thanks a lot, everyone.

[eva]

少了个等号
if (tim == 8)

[eva]

识别浏览器语言
<SCRIPT LANGUAGE="javascript1.2">
var language;
if (navigator.appName == 'Netscape')
language = navigator.language;
else
language = navigator.browserLanguage;

alert(language);
</script>

[eva]

<SCRIPT LANGUAGE="javascript1.2">
<!--//
if (navigator.appName == 'Netscape')
var language = navigator.language;
else
var language = navigator.browserLanguage;


if (language.indexOf('en') > -1) document.location.href = 'english.htm';
else if (language.indexOf('nl') > -1) document.location.href = 'dutch.htm';
else if (language.indexOf('fr') > -1) document.location.href = 'french.htm';
else if (language.indexOf('de') > -1) document.location.href = 'german.htm';
else if (language.indexOf('ja') > -1) document.location.href = 'japanese.htm';
else if (language.indexOf('it') > -1) document.location.href = 'italian.htm';
else if (language.indexOf('pt') > -1) document.location.href = 'portuguese.htm';
else if (language.indexOf('es') > -1) document.location.href = 'Spanish.htm';
else if (language.indexOf('sv') > -1) document.location.href = 'swedish.htm';
else if (language.indexOf('zh') > -1) document.location.href = 'chinese.htm';
else
document.location.href = 'english.htm';
// End -->
</script>

[meizz]

var s = new Date().toString();
var n = parseInt(s.substr(s.indexOf("UTC")+4, 2), 10);
if(n==8 && window.navigator.systemLanguage=="zh-cn")
window.location.href = 'chinese.htm';