jQuery.cookie = function(name, value, options) {

    if (typeof value != 'undefined') { // name and value given, set cookie

        options = options || {};

        if (value === null) {

            value = '';

            options.expires = -1;

        }

        var expires = '';

        if (options.expires && (typeof options.expires == 'number' || options.expires.toUTCString)) {

            var date;

            if (typeof options.expires == 'number') {

                date = new Date();

                date.setTime(date.getTime() + (options.expires * 24 * 60 * 60 * 1000));

            } else {

                date = options.expires;

            }

            expires = '; expires=' + date.toUTCString(); // use expires attribute, max-age is not supported by IE

        }

        // CAUTION: Needed to parenthesize options.path and options.domain

        // in the following expressions, otherwise they evaluate to undefined

        // in the packed version for some reason...

        var path = options.path ? '; path=' + (options.path) : '';

        var domain = options.domain ? '; domain=' + (options.domain) : '';

        var secure = options.secure ? '; secure' : '';

        document.cookie = [name, '=', encodeURIComponent(value), expires, path, domain, secure].join('');

    } else { // only name given, get cookie

        var cookieValue = null;

        if (document.cookie && document.cookie != '') {

            var cookies = document.cookie.split(';');

            for (var i = 0; i < cookies.length; i++) {

                var cookie = jQuery.trim(cookies[i]);

                // Does this cookie string begin with the name we want?

                if (cookie.substring(0, name.length + 1) == (name + '=')) {

                    cookieValue = decodeURIComponent(cookie.substring(name.length + 1));

                    break;

                }

            }

        }

        return cookieValue;

    }

};



var selected = 'small';

var selectedClassName = 'selected';

function _aaa(ele) {

	if ($.cookie('aaaSize')) {

		var e = ele;

		var r = document.getElementById(selected);

		$(r).removeClass(selectedClassName);

		$('body').css({'fontSize':$.cookie('aaaSize')});

		if (ele == undefined) {

			ele = $.cookie('aaaEle');

			e = document.getElementById(ele);

		}

		$(e).addClass(selectedClassName);

	} else {

		var r = document.getElementById(selected);

		$(r).addClass(selectedClassName);

	}

}



function aaa(size, ele) {

	$('.selected').removeClass(selectedClassName);

	$(ele).addClass(selectedClassName);

	$.cookie('aaaSize', size);

	$.cookie('aaaEle', ele.id);

	_aaa(ele);

}

_aaa();