I have never seen a man more logical than you Mr. Godzilla (the omission of H in my nick MUST be because I am weak in maths. your brain works wonderfully). I applaud your logical mind for having the time in the world to make a derivation out of a simple omission of 'h' in my nick. And by the way I am happy with RYTHM... there is no need for you to be so concerned. But I am flattered that you actually sat down and hurt your head and created a senseless formula for me. Thanks a lot!:)