Problem with UIScrollBar on IE and worse on Firefox

I added a UIScrollBar component to a dynamic text box. You can see it at following address: http://www.chidissimmo.com/
The first time it loads up in IE the scroll bar does not work, when you hit refresh the scroll bar works. When loaded on Firefox it does not work at all, even when refreshed.
Here's a sample of how it is structured: The Dynamic text box is under two movie clips. I want to keep it as a dynamic text box because the content is pulled from an XML file found online.
As a test I created a SWF with a dynamic text box and added the UIScrollBar on it, this one however is not under any movie clips and it works fine in both IE and Firefox.
I'd appreciate any help given.
Let me know if I need to post more details.

Thanks.

Bumped. Same problem. Using UIscrollbar.

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