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

var version_en = true;
if (language.indexOf('zh') > -1 && readCookie("ifEnglish") == 1) {
		
	var head = document.getElementsByTagName('HEAD').item(0);
	var style = document.createElement('link');
	style.href = '/css/cn.css';
	style.rel = 'stylesheet';
	style.type = 'text/css';
	head.appendChild(style);
	version_en = false;
	
}

function switchTo( lan ) {
	if(version_en){
		document.getElementById("switchToEn").style.display = "block";
		document.getElementById("switchToCn").style.display = "none";
		version_en = false;
	}else{
		document.getElementById("switchToEn").style.display = "none";
		document.getElementById("switchToCn").style.display = "block";
		version_en = true;
	}
	createCookie("ifEnglish",lan,999);
	window.parent.frames["main"].location.reload();
}
 

function createCookie(name,value,days) {
	if (days) {
		var date = new Date();
		date.setTime(date.getTime()+(days*24*60*60*1000));
		var expires = "; expires="+date.toGMTString();
	}
	else var expires = "";
	document.cookie = name+"="+value+expires+"; path=/";
}

function readCookie(name) {
	var nameEQ = name + "=";
	var ca = document.cookie.split(';');
	for(var i=0;i < ca.length;i++) {
		var c = ca[i];
		while (c.charAt(0)==' ') c = c.substring(1,c.length);
		if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
	}
	return null;
}

function eraseCookie(name) {
	createCookie(name,"",-1);
}