Are you one of those fanatics who puts up so many outdoor Christmas lights that jet planes think your house is a runway? Remember Chevy Chase’s house in "National Lampoon’s Christmas Vacation"? In the movies, decorating disasters are funny. At your house, safety is no laughing matter. Here are a few things you can do to make sure your holidays are safe. First, never use indoor lights outside. Only use UL-approved exterior lights. Stay off the roof to avoid falls and causing leaks. Suspend lights from hangers rather than nailing or stapling. The latter practice can cut into wires, creating shocks, shorts and hazards. Putting too many strands together can cause overheating and a fire. Overloaded circuits can blow fuses and trip circuit-breakers. A little decorating common sense will make your home a safe showplace this holiday season. And that’s the On The House tip for today.