Interactive image pan issue

Hi,

I have a vertical image pan working with AS3. I have movieclips that load new children when clicked. All works great. My issue is that even when the new child loads on top, the sliding menu still slides behind it. Does anyone have a suggestion on how to stop the menu from sliding while the child is loaded and starting it up again when the child closes? Probably simple, but having issues with trying various removeEventListeners, etc to get it to work.

Thanks