They need to click more 'backs' to return to the storyline instead of the link 'go back to the storyline' I would like to create. In fact it's even more complicated, because I use frames, and in some cases 3 frames change by leaving the storypath to the info-items, but it might be 2 frames in some cases.

So my thought was: if I remember were I came from by 'knowing' a number generated by the page I origianally came from, it looks easy to me to use a link 'go back' no matter where I came from, telling javascript if variable a = 1, b=4, c=8: go back to storyline page a, frame2 (buttons) page b (=4), frame 3 (topframe, naviagation) page c (=8) etc.

I guess if the user is really interested in the storyline with the addition of extra info, the navigation I would like to provide is the easiest way....but I would like to find out myself if that's the case :-)