Dynamic menu link not work well with embed guestbook

Hi all

The last days i added a guest book from bravenet.
I make embed the code guest book in my website
If the visitor press next or preview to guestbook and after a link someone where wrriten to guest book ,and again go buck to my page i observed the dynamic menou do not work,work correct everything the simple menu (switch to contens).
If someone go to my guestbook and do not press anything from it,then work everything correct the dynamic menu.


Do you know why happen this problem.

Thank you