Reverse the scrolling direction in windows

I kept switching between my personal MacBook (running MacOS Lion), Mac Mini (running MacOS Snow Leopard) and company's notebook (running Windows 7). Lion is using "reverse scrolling direction", the other two are using the normal way to scroll. When I switch between them, I almost always scroll the wrong direction!

So I really want them to use the same way to scroll. I spent couple minutes to search how to do it. Here is a simple script which runs on Windows. It can send reversed events to Windows. It's really simple and lightweight.




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