I have a program that serves as a web server and send information to the web clients when they are connected to it using Java script. I need to implement something that can send alerts to the web clients from my program. I was told the only way to get the alerts is by having the web clients polling for it periodically, and my program can send the alerts (if any) to the clients. One side effect of this is client page will get updated (refreshed) when the polling occurs which I don’t care much about. I am looking for ways to do this, any ideas? I think what I need is something like the live news ticker that it can send update news to the client.