OK - I’m tired and I don’t know how to phrase this properly so here goes…
On the main product page of many shopping sites when you roll over the main image a popup appears thats a magnified version.
Are there any libraries where you can download these?
Cheers all 
There’s many ways people do this from a simple lightbox effect up to an advanced and rich featured service like Adobe’s [URL=“http://www.scene7.com/”]Scene7 which can zoom, expand, recolor, etc. The solution you pick is one part budget [free script vs premium service] and one part assets [the better the photos the more you should be doing with them].