How do I stop my mouse from automatically moving?

Hi, recently whenever I add a new event, action, or really anything in my event sheet the mouse jumps to the button it thinks it should go to. This is incredibly distracting and disorienting. Anyone have any idea how to turn this off?

In case you don't understand, I made a gif:

http://imgur.com/a/QaP5n

I don't know which Windows version you have. In Windows 7 you can turn this behavior off in the control panel, mouse properties. In the tab 'pointer options' check off 'automatically move pointer to the default button in a dialog box'.

Now the irritating mouse behavior should be gone.

Thanks Asmodean, that worked!