function setCookie(name, value, expiredays, path, domain, secure) {
    if (expiredays) {
        var exdate=new Date();
        exdate.setDate(exdate.getDate()+expiredays);
        var expires = exdate.toGMTString();
    }
    document.cookie = name + "=" + escape(value) +
    ((expiredays) ? "; expires=" + expires : "") +
    ((path) ? "; path=" + path : "") +
    ((domain) ? "; domain=" + domain : "") +
    ((secure) ? "; secure" : "");
}
function getCookie(name) {
    var cookie = " " + document.cookie;
    var search = " " + name + "=";
    var setStr = null;
    var offset = 0;
    var end = 0;
    if (cookie.length > 0) {
        offset = cookie.indexOf(search);
        if (offset != -1) {
            offset += search.length;
            end = cookie.indexOf(";", offset)
            if (end == -1) {
                end = cookie.length;
            }
            setStr = unescape(cookie.substring(offset, end));
        }
    }
    return setStr;
}
function block_now(id) {
    if(getCookie(id) == 1) {
        display = 'none';
        setCookie(id, 0, 90, "/");
    } else {
        display = '';
        setCookie(id, 1, 90, "/");
    }
    document.getElementById(id).style.display = display;
}
function block_start(id) {
    var cookie_stat = getCookie(id);
    if((cookie_stat == 1) || (!cookie_stat)){
        display = '';
    } else {
        display = 'none';
    }
    document.getElementById(id).style.display = display;
}