From AS1.0 to AS2.0 (Problem)

Hello everyone!
I’m trying to convert my code in Flash 5 into Flash 8, some how the output is not what I expected for.

AS1.0
http://www.geocities.com/fatyang8_8/graph1.fla

AS2.0
http://www.geocities.com/fatyang8_8/graph2.fla

Thanks for viewing and trying help.