How to ignore (make invisible) a file in project view?

Hi,

Using Idea CE 12.04, Linux version. I have a LibreOffice document MyDoc.odt in the root of my project. When I double click on it, the MyDoc.odt file is opened by LibreOffice Writer. This also creates a file named .~lock.MyDoc.odt# which is visible in the project view.

I have configured .gitignore to exclude these .~lock files. It is just a minir visual annoyance to see these dynamic temp files in the project view. Is there a way to tell IntelliJ Idea to ignore a certain type of files? By "ignore" I mean: don't show them in the project view, no sync, no source control, do nothing like if these files don't exist.

Thanks in advance for any advice.