Here’s a cool piece of Javascript code which allows you to overlay an image zoom over the current page, without having to open a pop-up window to show the zoomed image.

“Lightbox JS is a simple, unobtrusive script used to overlay images on the current page. It’s a snap to setup and works on all modern browsers.”
Link: Lightbox JS

Here’s a link to a Wordpress Plugin which uses the same feature:
“It scans your posts for linked images and makes a nice overlay popup out of them. This is much better then linking to a new window oder even open a fullblown javascript popup. The Lighbox Popup shows a small preloader animation before showing the full image. Before i continue to talk about what it is, i better put on some example.”
Word Press Plugin: m3nt0r.de - beyond the net » Plugin: Lightbox

To see how it works, click on the image below:

[tags]Javascript, Wordpress, Plugin, image, zoom, overlay[/tags]