Correction of a player actionscript

Correcting an actionscript of? a Flash program I have a Flash program that scrolls along a web page while playing an audiofile, and moves to different points along the web page, depending on an external XML file. The program also scrolls the player controls down the long web page as it plays. It works in IE and Chrome, but crashes Firefox when pressing the rewind controls on the player. I suspect this is a problem in the action script. I need an expert in action script to help find the bug. ## Deliverables Flash Action Script XML/XHTML Javascript