Going from full-screen frame to the original smaller frame
I'm on a PC. I have a friend on a Mac that I'm trying to help with a particular problem. He's trying to watch a Ustream Live video (the eagle cam in Decorah, Iowa). When he clicks on that black box with the brackets around the corners to enlarge the video to full screen, that part works fine. But I told him that when he's done viewing, to hit the "Esc" key to bring that video screen back to its original small size (and I told him that because that's the instruction that I get on my PC screen). But he said that when presses the escape key to reduce the size, he gets the spinning wheel, his computer locks up, and he has to shut the computer down and restart it. Any suggestions of how he can reduce that screen from full-screen to the small original version on a Mac?