function g_getCookie(name) {
	var myCookie = document.cookie;
	var cookieName = "";
	var cookieValue = "";
	beginning = 0;
	if ( myCookie == null || myCookie.length < name.length )
		return cookieValue;
	var len = myCookie.length;
	while (beginning < len) {
		middle = myCookie.indexOf('=', beginning);
		end = myCookie.indexOf(';', beginning);
		if (end == -1) end = len;

		if ((middle < end) && (middle != -1)) {
			cookieName = myCookie.substring(beginning, middle);
			if (cookieName == name) {
				cookieValue = unescape(myCookie.substring(middle+1, end));
				break;
			}
		}
		beginning = end + 2;
	}
	return cookieValue;
}
function g_getExpired() {
            var isExpired = false;
            var g_expire= userTrack.getCookieValue("ET", false);
            if (g_expire == "-1" || g_expire == "" || g_expire == null)
                        isExpired=true;
            else {    
            g_expireDate = new Date(g_expire);
            g_expireUTC = g_expireDate.toUTCString();
            var currentDate = new Date();
            var currentDateUTC = currentDate.toUTCString();
            if (Date.parse(g_expireUTC)-Date.parse(currentDateUTC) <= 0)
                        isExpired = true;
            }
            return isExpired;
}

var firstName = userTrack.getCookieValue("FN", false);
var lastName = userTrack.getCookieValue("LN", false);
var isCookieExpired = g_getExpired();
function displayUserInfo(welcomeMessage, defaultGuestName){
	if (!isCookieExpired && firstName != '' && lastName != '') {
		document.write(welcomeMessage + ' ' + firstName + ' ' + lastName);
	}else{
	    document.write(welcomeMessage + ' ' + defaultGuestName);
		
	}
}

function displayUserInfoBtn(signOutImageLink, signInImageLink, joinImageLink){
    if(!isCookieExpired){
        document.write(signOutImageLink);
    }else{
        document.write(signInImageLink);
        document.write('&nbsp;');
        document.write(joinImageLink);
    }
}