Gallery Thumbnail Scroll with Easing

Hello, i have a little problem. I make gallery with thumbnails scrolling. When i test my movie, 1st image of the thumbail appears at the beginning of the mask mc, but when i scroll thumbs to the end, and back again to the beginning, 1st image doesn’t appear at the beginning of the mask. To thumb scroll i used *Interactive Image Panning tutorial. Plz help me to find better solution. I’d like to add and remove images to the thumb without correcting thumb position every time I add image. I notice that position of the 1st image in the thumbnail is **
0 - thumbwidth
/ 2
. Of course i’d like to use easing with scroll. To modify scrolling use **thumbMove **function and _root.onMouseMove function, or help me make better. Thx anyway