I'm looking to do this effect for a portfolio page. It would have two sections, one that has an overview of a page, and the other would display a zoom detail of the page. The mouse would act like the pointer. If anyone has any idea of what I'm talking about and could enlighten me, I would be much obliged.

here is a mock up...

http://studenthome.nku.edu/~wester/ex.jpg

Thanks in advance.

Eric