Image software for site/blog?

[N.V.M.]

i'm looking for software or the techniques used where you see images on the web where you can hover your cursor(or click) and the detail or section of that image will expand for better viewing, similar to this:

(hover over the yellow crosses)

Mini GT Push Golf Cart by Bag Boy | golf push cart | golf trolley | golf bag cart | golf caddy | golf trolleys | push golf carts from Bag Boy

i've seen WordPress plugins that convert highlighted text into an image when you hover your cursor, but not what i'm quite looking for. pretty much the example in that link is what i want.