Quick Fix Mouse Scrolling Issue

Hi: I have a couple of website where I have problems with the mouse wheel. The website are done completely in Flash. The mouse wheel to scroll down in the browser is working at the beginning however after clicking on some links in the flash movie i can't use the mouse wheel anymore. I will send you the websites and information so you can test it. Please contact us if you have any ideas how to fix it. It is the same problem in FF or IE. Thank you for your bid