Chat: Turn off form on Launch Page when no agents are available.

Summary

How do I turn off the form on the chat launch page if no agents are available.

Content

Hello,

I see that others have asked this question but don't seem to have gotten an answer.  On the Chat/Launch.php, how do I hide the form when no chat agents are logged in?

Right now the widget only hides the form if we are outside of chat hours - but we are likely to have a situation where we are within chat hours but no agents are logged in for whatever reason, when that happens I want the "Chat not available" message to pop up instead of the form.