Navigating to specific frame from one movie to the next

I am creating a virtual tour that has four sections. When the user gets to the end of the first section, the next button will take them to the beginning of the next movie. I could use getURL for this. But when they click the back button of the first page of the section two it needs to jump to frame 126 of section 1. not to the beginning of section 1.

I think I should use levels and targets as the solution, but not really clear on how to pull this one off.:q:

You can take a gander at http://www.concordia.edu/html/virtual_campus/campus_tour.htm
to get an idea of where I’m going with this. The navigation at the bottom jumps to the different sections, but the next button at the end of each section currently loops back into itself.

Thanks!