Store multiple checkbox state with jquery.cookie.js

Store multiple checkbox state with jquery.cookie.js

HTML

<script src="https://github.com/carhartl/jquery-cookie/blob/master/jquery.cookie.js"></script>
   <div id="boxlawreg">
        <input type="checkbox" name="option1" value="1" checked />1<br />
        <input type="checkbox" name="option2" value="2" />2<br />
        <input type="checkbox" name="option3" value="3" />3<br />
        <input type="checkbox" name="option4" value="4" />4<br />
    </div>

JavaScript

//===== Cookies Plugin=====   //

(function ($) {
            $.cookie = function (key, value, options) {

                // key and at least value given, set cookie...
                if (arguments.length > 1 && (!/Object/.test(Object.prototype.toString.call(value)) || value === null || value === undefined)) {
                    options = $.extend({}, options);

                    if (value === null || value === undefined) {
                        options.expires = -1;
                    }

                    if (typeof options.expires === 'number') {
                        var days = options.expires, t = options.expires = new Date();
                        t.setDate(t.getDate() + days);
                    }

                    value = String(value);

                    return (document.cookie = [
                encodeURIComponent(key), '=', options.raw ? value : encodeURIComponent(value),
                options.expires ? '; expires=' + options.expires.toUTCString() : '', // use expires attribute, max-age is not supported by IE
                options.path ? '; path=' + options.path : '',
                options.domain ? '; domain=' + options.domain : '',
                options.secure ? '; secure' : ''
            ].join(''));
                }

                // key and possibly options given, get cookie...
                options = value || {};
                var decode = options.raw ? function (s) { return s; } : decodeURIComponent;

                var pairs = document.cookie.split('; ');
                for (var i = 0, pair; pair = pairs[i] && pairs[i].split('='); i++) {
                    if (decode(pair[0]) === key) return decode(pair[1] || ''); // IE saves cookies with empty string as "c; ", e.g. without "=" as opposed to EOMB, thus pair[1] may be undefined
                }
                return null;
            };
        })(jQuery);

//======================================//

  $(document).ready(function () {
            var...