Stop imessages from showing when imessage is closed
Ok so I use iMessage between my iPhone and Mac. Everything works great for the most part. The most annoying "feature" I can not seem to turn off is to stop iMessages from showing up when I have quit the app. It gets to the point I have to make sure all networking is turned off to make sure when I am presenting on an overhead projector the popup is not displayed. Is there any way to stop iMessage notifications when the app is closed?
MacBook Pro with Retina display, OS X Mountain Lion (10.8.4)