gizmo,

Matt Clark would answer this for you but he's out fishing so here are some links that may address your question.

http://www.pondboss.com/ubb/ultimatebb.php?ubb=get_topic;f=17;t=000037#000005

http://www.pondboss.com/ubb/ultimatebb.php?ubb=get_topic;f=17;t=000001#000006