Complex jQuery image slider stop / start timed question

Complex jQuery image slider stop / start timed question

I need to get hold of a jQuery image scroller that scrolls through a large amount of images continuously but stops when one image gets into the middle of the scroller and then displays the thumbnail, but in a large version in a box directly above the box that the thumbnail stops in.

So... How it will work...

1. Images are scrolling continuously.
2. 1 of the images get into the center box and displays a large image of the thumbnail in a box above.
3. After 3 seconds, the next image scrolls into the center box and displays a large image of the thumbnail in a box above.
4. And so on...

Is there a plugin that does the above already?
How could I do this if not?