Manipulate cookies via js

cookies.js

function CreateCookieMan() {
    
    var cookieStore = getCookies();

    var getAll = function() {
        return cookieStore;
    };

    var getItem = function(name) {
        return cookieStore[name];
    };

    var setItem = function(name, value, end, path, domain, secure) {
        if (!name || /^(?:expires|max\-age|path|domain|secure)$/i.test(name)) { return false; }
        var prop,
            cookie = '',
            expires = '';
        cookieStore[name] = value;
        if (end) {
            switch (end.constructor) {
                case Number:
                    expires = end === Infinity ? "; expires=Fri, 31 Dec 9999 23:59:59 GMT" : "; max-age=" + end;
                    break;
                case String:
                    expires = "; expires=" + end;
                    break;
                case Date:
                    expires = "; expires=" + end.toUTCString();
                    break;
            }
        }
        document.cookie = encodeURIComponent(name) + "=" + encodeURIComponent(value) + expires + 
            (domain ? "; domain=" + domain : "") + (path ? "; path=" + path : "") + (secure ? "; secure" : "");
    };

    var removeItem = function(name, path, domain) {
        if(!name) return false;
        if(name in cookieStore) {
            delete cookieStore[name];
            document.cookie = encodeURIComponent(name) + '=; expires=Thu, 01 Jan 1970 00:00:00 GMT' + 
                (domain ? "; domain=" + domain : "") + (path ? "; path=" + path : "");
            return true;
        } else {
            return false;
        }
    };

    return {
        getAll: getAll,
        getItem: getItem,
        setItem: setItem,
        removeItem: removeItem
    }

    function getCookies() {
        var cookie = document.cookie,
            cookieMap = {},
            tmp,
            cur,
            len;
        if(cookie) {
            tmp = cookie.split(';');
            len = tmp.length;
            while(len--) {
                cur = tmp[len];
                if(cur) {
                    cur = cur.trim();
                    cur = cur.split('=');
                    cookieMap[cur[0]] = cur[1];
                }
            }
        }
        return cookieMap;
    }
}