Auto adjust scrollbar to content

Hi There,

I am a product design student and I have to make a website as an assignment for my school. Next week is the presentation and now I have this little problem:

I found an instruction on this site on how to make a scrollbar and so far so good; it worked. The problem is that this scrollbar was only meant for a ‘non changing’ content. It means the ‘slidebar’ will always stay the same size. The problem is however that my content varies, one time it’s only text, when you’ll click a button, pictures slide out and so, the content will be bigger. For example, look at your screen on the right, this is the kind of scrollbar a need: The size of the slidingbar will change if you fold content out.

Now, the problem is I am very bad at actionscript, so that means that I need some help.
I can send you the file by email so that you can take a look at the script.
I would be very grateful if someone’s able to help me out!

Thanks in advance.