function Dialog(bg,els,opts) {

    this.$els = $(els);

    this.$Dialogbg = $(bg);

    this.$close = this.$els.find(opts.close);

    this.$btn = this.$els.find(opts.btn);

    this._init();

}

Dialog.prototype={

    _init:function () {

        var self = this;

        this.show();

        this.$Dialogbg.click(function () {

            self.hide();

        });

        this.$close.click(function () {

            self.hide();

        });

        this.$btn.click(function () {

            self.hide();

        });

    },

    show:function () {

        this.$Dialogbg.fadeIn(300);

        this.$els.fadeIn(300);

    },

    hide:function () {

        this.$Dialogbg.fadeOut(300);

        this.$els.fadeOut(300);

    }

};

/*实例化*/

new Dialog(".Dialogbg",'.DialogBox',{

    close:'.closes',

    btn:'.go-use'

});