var oCookie = {

    setCookie: function (name, value, expireDays, path, domain) {

        var expireDays = expireDays || 0,    //天数

           path = path || '/',    //路径

          domain = domain || '',    //域名

           date = new Date();

        date.setDate(date.getDate() + expireDays);

        document.cookie = escape(name) + '=' + escape(value) + ';expire=' + date.toGMTString() + ';path=' + path + ';domain=' + domain;

    },

    getCookie: function (name) {

        var str = document.cookie,

            arr = str.split('; '),

            _temp = '';

        for (var i in arr) {

            _temp = arr[i].split('=');

            if (_temp[0] == escape(name)) return unescape(_temp[1]);

        }

    },

    delCookie: function (name) {

        document.cookie = escape(name) + '=' + null + ';expires=' + (new Date(0)).toGMTString();

    }

}