//***************** COOKIE ERSTELLEN ******************

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

//***************** COOKIE LESEN ******************

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;
}

//***************** COOKIE ZURÜCKSETZTEN ******************

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