Polish National Anthem Protocol

When the U.S. national anthem is played, it is custom to place the right hand over the heart. What is protocol for a Polish citizen in Poland when the Polish national anthem is played?

Well, now we place the right hand over the heart too.

Sorry i don't speak English very well.

There is no directive on this as far as I know. generally Poles stand respectfully and silently at attention and possibly sing along. I have noticed Ukrainian President Yushchenko placing his hand over his heart during the playing of his country's anthem. Years ago, a Polish woman watching Jimmy Carter do this asked whether he had a stomach ache or what.