Are those the files that you currently have on your site? It seems to me that they are not quite the same. In the files that are online it looks like you load the web “mini sections” into _root.content. You should load them into _root.content.content instead.
From what I can see from the files you posted, you give the loadMovie command inside the transition movieclip (web.swf) and tell it it has to load into _parent. In this case you are thus trying to load the swf into the MC called transition, but as I said before, I don’t think they are the same files as you have online, but I could be wrong, in which case feel free to call me a ******* 
(edit: I can’t believe that word was censored)
Let me know if the above suggestion works. If it doesn’t I guess I will have to try a little harder
