Drag big picture in small layer?

I need a plugin for jquery or another js framework, where I can define a small div where i can drag around a big picture, so i get only a clipping of the picture. any ideas?

edit: i try to explain

i have a small div, like 600px x 450px. this div behaves like a clipping windo开发者_StackOverflow中文版w for a big picture with like 3000px x 2000px. so i only see a specific cutout of the big picture. and i need to drag that big picture around in this small clipping window!

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