title says it all. tnx in adv. please email to air at anableps.berkeley.edu _______ _ __ _ _ __ __ Arthur Ernest Wright @ \ / / \ / / \ / \ / / / \ (503)344-7969 \ O / /__/ /__ / / /__/ / /__ \__ ___ _ _ _ \ / / / / / / / / | | |_ / | \ /\ | /\ /_ \/ v / /__ \_/ / /__ /__ \__/ | |_ \_ | | \/ |_ \/ \/ /