Scrollpane masking error

Hello,

I have a little problem with using a scrollpane. working with Actionscript 2.0, Flash Player 7.

My document is set out with an empty movieclip on _root, within which i am loading movieclips which each contain a scrollpane. The problem is when one of the loaded clips is removed from the mc on _root and a new one put in, the scrollpane does not mask the content (it still scrolls though, and it does mask if you reload it) and other such weirdness…

to explain, i have uploaded it to http://www.leeharding.net/problem - on the menu on the homepage, if you select ‘request information’ then either ‘photogallery’, ‘retreat parks’, or ‘price list’ (ignore other menu items) then the info is all over the place, but, if you press them in any other order they are fine??

so i guess the problem lies with the ‘request information’ mc… but i cant figure it out. I have included my .fla below for anyone who is kind enough to check it out for me.

www.leeharding.net/problem/retreat_probfla.zip

the mc you will need to check is called ‘form_mc’ and is in the ‘sections’ folder in the library

thanks for your time,

Lee