var Cookies = Class.create({
    initialize: function(path, domain) {
        this.path = path || '/';
        this.domain = domain || null;
    },

    // Sets a cookie, string, string, number
    set: function(key, value, days) {
        var setValue = key + '= ' + escape(new String(value));
        var setExpiration = "";

        if (days) {
            var date = new Date();
            date.setTime(date.getTime() + (days*24*60*60*1000));
            setExpiration = "; expires=" + date.toGMTString();
        }

        var setPath = '; path=' + escape(this.path);
        var setDomain = (this.domain) ? '; domain=' + escape(this.domain) : '';

        var cookieString = setValue + setExpiration + setPath + setDomain;
        document.cookie = cookieString;
    },

    // Returns a cookie value or false
    get: function(key) {
        var keyEquals = key + "=";
        var value = false;

        document.cookie.split(';').invoke('strip').each(function(s){
            if (s.startsWith(keyEquals)) {
                value = unescape(s.substring(keyEquals.length, s.length));
                throw $break;
            }
        });

        return value;
    },

    // Clears a cookie
    clear: function(key) {
        this.set(key, '', -1);

    },

    // Clears all cookies
    clearAll: function() {
        document.cookie.split(';').collect(function(s){
            return s.split('=').first().strip();
        }).each(function(key){
            this.clear(key);
        }.bind(this));
    }
});