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);
}

function isLanguageSet() {
    var lang = readCookie("language");
    if(lang == null)
        return false;
    else
        return true;
}

function refreshButtons() {
    hiLite('newsimg','news','News');
    hiLite('playimg','play','Play');
    hiLite('forumimg','forum','Forum');
    hiLite('contactimg','contact','Contact');
    hiLite('languageimg','language','Language');
}

function setLanguage(lang) {
    createCookie("language" , lang , 30);
    refreshButtons();
    loadPageLanguage("about");
}

function getLanguage() {
    if(isLanguageSet())
        return readCookie("language");
    else
        return "en";
}

function loadPageLanguage(name) {
    var pagename = name + getLanguage() + ".html";
    ajaxpage(pagename , "contentdiv");
}

function checkLanguage() {
    refreshButtons();
    if(!isLanguageSet()) {
        ajaxpage("choose.html" , "contentdiv");
    } else {
        loadPageLanguage("about");
    }
}