Slider needs to stop moving when image rep is clicked

Please view http://www.medark.com/africa On the projects page, I have implemented a basic mouseover slider that moves the image representations back and forth. The slider actionscript is written into the movie clip that encompasses the image reps. When an image representation is clicked, the top black palette reveals the content. In the actionscript, when an image rep is clicked, a certain page tied to the top palette is activated and then revealed. How can I keep it the way it is, except I want the slider to stop moving when I click an image rep? Keep in mind that the slider actionscript is not in the same place as the image reps actionscript. It is above them.