Snow Tutorial

Hi All,
[URL=“http://www.kirupa.com/developer/mx/snow.htm”]
http://www.kirupa.com/developer/mx/snow.htm

I would like to know how I can get the snow to move up instead of down. I’ve tried to put a “-” i = [COLOR=Red]"-"[/COLOR]1+Math.random()*4; there but it doesn’t loop and the snow balls doesn’t stop just keeps going.

Thanks

vxd