ups, forget my question about leap years, please. 'must have a bug in my time calculation.... Sorry! Thanks! Joerg -- Jörg Kaduk Tel.: 1 650 325 1521 x 416 Carnegie Institution of Washington FAX: 1 650 325 6857 Dept. of Plant Biology 260 Panama Street joerg@jasper.stanford.edu Stanford, CA 94305-1297 http://Jasper.Stanford.EDU/joerg/