cookie

function setCookie(cname, cvalue) {
    document.cookie = cname + "=" + cvalue;
}

//Nije moj kôd
//http://www.w3schools.com/js/js_cookies.asp
function getCookie(cname) {
    var name = cname + "=";
    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);
        }
        if (c.indexOf(name) == 0) {
            return c.substring(name.length, c.length);
        }
    }
    return "";
}

function checkCookie(cname) {
    var user = getCookie(cname);
    if (user != "") {
        return true;
    }
    return false;
}

function deleteCookie(cname) {
    //document.cookie = "username=; expires=Thu, 01 Jan 1970 00:00:00 UTC";
    document.cookie = cname + "=; expires=Thu, 01 Jan 1970 00:00:00 UTC";
}