Help making instructional .swf

hi. i’m making an instructional .swf and i need to do some elaborate button tweaking.

i’ve created a movie clip which contains a forward button and a back button (each goes to the either the next or prev frame in the root file) and this movie clip (containing the buttons and instructional prompt) fades into the frame after about ten seconds, which more or less forces the student to read what’s on the screen and NOT just toggle through the entire lesson. fair enough, easy enough. mission accomplished, but…

the problem is, i need to have it so that the student can go back through the lessons (frames) that they’ve already seen at any point if they want to review…and the way i have it now, they have to sit and wait through the ten second delay on each frame as they go back through them - which is a pain in the butt and annoying.

Is there any way to use actionscript to make it so that once a frame has been visited (loaded) once it will display a different set of buttons (ones that don’t have a delay)?

Does any of this make sense to anyone? Help me keep my job and teach children at the same time!