im_chat.Conversation = openerp.Widget.extend({
   update_fold_state: function(state){
      return new openerp.Model("im_chat.session").call("update_state", [], {"uuid" : this.get("session").uuid, "state" : state});
   },
})

openerp.im_chat.Conversation.include({

    update_fold_state: function(state){
            if(state === 'closed'){
                this.destroy();
            }else{
                if(state === 'open'){
                    this.show();
                }else{
                    if(this.shown){
                        state = 'fold';
                        this.hide();
                    }else{
                        state = 'open';
                        this.show();
                    }
                }
            }
            var session = this.get('session');
            session.state = state;
            this.set('session', session);
            openerp.set_cookie(im_livechat.COOKIE_NAME, JSON.stringify(session), 60*60);
     },
 });

openerp.im_livechat.Conversation.inlcude({
    update_fold_state: function(state){
        alert("Hello World");
    },

})