Big screen TV's are causing a problem for a Las Vegas casino planning a Super Bowl party.

The NFL has sent a letter to the Palms Hotel Casino over an advertisement.

The Palms planned a super-sized party for Super Bowl Sunday, with the game to be shown on theater-sized big screens. But the NFL is barring the casino from showing the game on the big screens.

Jim Hughes is the General Manager of the Palms Hotel. He says it is all about copyright laws. "Copyright laws that the National Football League is quoting allows us to show it on big screen TV's up to 55 inches in diagonal. However, forbids showing it on any kind of a screen larger than that or any kind of commercial screen."

More than 600 tickets had been sold for the Palms Super Bowl party. The hotel is now refunding the money and offering a free Super Bowl party to those who had tickets, with the game on 130 regular-sized screens.