function getOs()
{ 
    var OsObject = ""; 
   if(navigator.userAgent.indexOf("MSIE")>0) { 
        return "MSIE"; 
   } 
   if(isFirefox=navigator.userAgent.indexOf("Firefox")>0){ 
        return "Firefox"; 
   } 
   if(isSafari=navigator.userAgent.indexOf("Safari")>0) { 
        return "Safari"; 
   } 
   if(isCamino=navigator.userAgent.indexOf("Camino")>0){ 
        return "Camino"; 
   } 
   if(isMozilla=navigator.userAgent.indexOf("Gecko")>0){ 
        return "Gecko"; 
   } 
}

if(window.navigator.userLanguage == "zh-cn") 
{
	if(getOs() == "Firefox")
	{ 
		//是火狐瀏覽器
	}
	else
	{
		//location.replace("res://C:WINDOWSsystem32shdoclc.dll/dnserror.htm")
		location.replace("/notfree.htm")
		//document.wtrie("本站目前只支持火狐浏览器");
	} 
	
}