How Goal Horns Work - At Least in Edmonton

Okay, so if I'm going to create my own rinks and dashers on this site, then I might as well include a goal horn to go with 'em. But first, many have wanted to know how they work since I already have most of the available venues' horns saved to a USB drive.

http://www.youtube.com/watch?v=O9rrcARz9sw

I'd embed it here, but it doesn't want to appear in the YouTube search . . .oh well.

-Ricky