Your suggestion has been received in this very popular category and is awaiting review. We can't predict when that might be. If it hasn't been listed in 6 months, please ask again in this same thread.
That's bad...your directory gets covered by a DHTML advertisement that has no close button. If you really have a directory, you should 'play fair' and allow visitors to close the advertisement to use the directory. Call me "Simon", but this site wouldn't make the next "American Idol".