What happens to my image tweening

first of all this is my first ever website. its currently under construction and needs little tweaks here and there:


I have an embedded flash gallery that loads different XML content. achieved by pressing the three main buttons ‘projects’, ‘journals’ etc.

only projects and journal buttons are currently working. anyway when the gallery first loads my image tweens work perfectly but when you click to view new xml content i.e when clicking journal button, it goes and there is no smoothness whats so ever.

I have no clue as to why this is happening. I have the exact same code in each keyframe except that the xml source has changed, of course. Each section button ('journal") when clicked navigates to the correct frame. Any ideas/help would be brilliant. Been bugging my head all weekend. Please Help!! Thanks