Scrollbar / pane question

[COLOR=black][FONT=Arial]Hello[/FONT][/COLOR]

[COLOR=black][FONT=Arial]I am building an FAQ and have got stuck, I hope some of you really good Flash people can sort me out, because to be honest, I’m probably a bit in over my head.[/FONT][/COLOR]

[COLOR=black][FONT=Arial]I am trying to load text (FAQ answers) from buttons ( FAQ questions)[/FONT][/COLOR]
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[COLOR=black][FONT=Arial]The question buttons are in a movie within a scrollpane component. Clicking a button loads answer text into a dynamic text field on the stage.[/FONT][/COLOR]
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[COLOR=black][FONT=Arial]The text is loaded from within the actionscript of the button (as HTML) I can’t do anything about this, it is my only option (I can’t load from a txt file - not allowed)[/FONT][/COLOR]
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[COLOR=black][FONT=Verdana]Basically I want the scrollbar I have attached to the text field to appear when there is text overflow, and dissappear when there is no text overflow.[/FONT][/COLOR]

[COLOR=black][FONT=Arial]Check out my crude demo if you can and set me straight, I’d really appreciate it…[/FONT][/COLOR]

[COLOR=black][FONT=Arial]Many thanks for reading[/FONT][/COLOR]