wanted - javascript or flash magnifying glass effect
 

Any web developers on here that could point me to a free magnifying glass effect.

Something that would work like this:
mag_glass

BUT I need to be able to specify the photo filename in the web page's code

eg. think e-commerce, user viewing a page full of products. Each product has a thumbnail.

User clicks thumbnail to go to a detailed page on that particular product - photo shows a necklace.

I want the user to move mouse pointer over the photo and magnify the necklace showing detail.

How about this affect, sounds pretty close to what your looking for;
demo: Create Resizing Thumbnails With Overflow Property
How to: Create Resizing Thumbnails Using Overflow Property | Css Globe

thanks Ashu, but that's no good.

I've now found something decent.