Disable-Enable OnepageScroll / Scrollable Div

Hi everybody ! Onepage-Scroll is wonderfull for me. I just have a quick question. I built a page with links to be able to open other pages in overlay the onepage scroll. But theses pages in overlay have a scroll and this scroll does not work because OnePage is activate. Have you got in solution to make scrollable certain div ? Or to put onepage scroll in pause (disable) and reactivate when we close the overlay page ? Thank you in advance for your help