/*********************************/
/* Ein paar nützliche Funktionen */
/*********************************/


function checkCookieStateFor(id) {

    var dateObj = new Date();
    var expireDate = new Date(dateObj.getTime() + (7 * 24 * 60 * 60 * 1000));

    if (getCookie('status')) {
        document.getElementById(id).style.display = "none";
    } else {
        setCookie('status', 'showed', expireDate);
    }
}


function setCookie(name, value, expires, path, domain, secure) {
    var curCookie = name + "=" + escape(value) +
      ((expires) ? "; expires=" + expires.toGMTString() : "") +
      ((path) ? "; path=" + path : "") +
      ((domain) ? "; domain=" + domain : "") +
      ((secure) ? "; secure" : "");
    document.cookie = curCookie;
}

function getCookie(name) {
    var dc = document.cookie;
    var prefix = name + "=";
    var begin = dc.indexOf("; " + prefix);
    if (begin == -1) {
       begin = dc.indexOf(prefix);
       if (begin != 0) return null;
    } else {
        begin += 2;
    }
    var end = document.cookie.indexOf(";", begin);
    if (end == -1) {
        end = dc.length;
    }
    return unescape(dc.substring(begin + prefix.length, end));
}