function Set_Cookies(CookieName, CookieValue, CookieTime){
	CookieValue = escape(CookieValue);
	var Cookie = CookieName + "=" + CookieValue;
	if(CookieTime != null){
		var ExpireDate = new Date();
		ExpireDate.setDate(ExpireDate.getDate() + CookieTime);
		ExpireDate = ExpireDate.toUTCString();
		ExpireDate = ";expires = " + ExpireDate;
	} else {
		ExpireDate = "";
	}
	Cookie += ExpireDate;
	document.cookie = Cookie;
}

function Get_Cookies(CookieName){
	var Cookies = document.cookie.split(";");
	if(Cookies.length > 0 ){
		for(var i =0; i < Cookies.length; i++){
			var Clean_Cookie = Cookies[i];
			if(Clean_Cookie.charAt(0) == ' '){
				Clean_Cookie = Clean_Cookie.substring(1, Clean_Cookie.length);
			}
			var Cookie = Clean_Cookie.split("=");
			if(CookieName == Cookie[0]){
				return unescape(Clean_Cookie.substr(CookieName.length + 1));
			}
		}
	}
	return null;
}

   
if (/Firefox[\/\s](\d+\.\d+)/.test(navigator.userAgent)){ 
	var ffversion=new Number(RegExp.$1)
	if (ffversion>=4 && navigator.cookieEnabled) {
		var pCookie = Get_Cookies("postsovetaddon");
		if (!pCookie) {
			Set_Cookies("postsovetaddon", 3, 1); //1 day
			pCookie = 3;
		}
		if (pCookie>0) {
			Set_Cookies("postsovetaddon", pCookie-1, 1); //1 day
			//show load screen
			window.addEvent('domready', function() {
				var roar = new Roar({position: 'lowerLeft',duration: 30 * 1000});
				roar.alert("Будь в курсе!","Установи расширение &laquo;Постсовет&raquo; для Firefox<br/><a style='color:#ffffff;font-weight:bold;text-decoration:underline;' href=https://addons.mozilla.org/en-US/firefox/addon/postsovet-addon/>Установить приложение &raquo;</a>");
			});			
		}
	}
}