didn't know there was a scroll key on a mouse.you mean the wheel i assume
lookup to the top of the page ,see software development ,that where i think you should be posting you question
caperjack
I hate 20 Questions
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You can do that but i think you should try the software development forum like caperjack said. Posters there will give you some hint and tips but definitely no direct answers as it is considering doing your homework while you get all the credits.
jingda
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