using Balloon plugin to show and hide balloon tip

using Balloon plugin to show and hide balloon tip

I am using the jquery balloon plugin from here: http://file.urin.take-uma.net/jquery.balloon.js-Demo.html

The default method is to show the balloon on hover.  Well, I want to show it on page load and the hide it after so many seconds.  I can get it to show by calling the "showBalloon" function on my jquery ready function.  But I can't figure out how to make it hide after a set number of seconds.  Can anyone figure out how I can do this?
Thanks
Mike