How to drag a movie clip that is larger than the flash document and have it stop at

how to drag a movie clip that is larger than the flash document and have it stop dragging at the edges of the movie clip? I have an 300x300 (just for example) flash movie. i have an image that is 500x650 placed a x/y of 0. i want people to be able to drag the large image so they can see the whole image, even though its larger than the movie dimensions. but i dont want it to keep dragging so say they drag it left 600 pixels, you see past the edges of the images to the background. i guess if you do the math, say at x/y = 0, they can only max drag it left 250 pixels but not farther left so you wont see past the edge of the image’s right side. i have some diagrams to illustrate. any help or tutorials would be appreciated!

mikey

THE MAIN SETUP:

EXAMPLES OF MAX DRAG OF THE MOVIE CLIP.