I want to add a bit of Javascript to an HTML module to invoke the Send Message popup (using the To person's UserID). I could not find an example of how to do this - is it possible?

For example - on this page - where it says, Contact Host - if you are logged in, it could have Send Message - http://www.pokerdiy.com/poker-game/home-poker/view/poker-game/38232/newaastle-poker-game--not-a-muppet-fest.aspx#.Uhl42ZIwf5X

Thanks