WP FancyZoom

FancyZoom is an image pop-up script that allows viewing images in an unobtrusive manner.

You put a thumbnail image in your post and link to the full-size image. If a user clicks on the thumbnail, the full-size image zooms in over the current window. When the user clicks on the zoomed picture, it goes away.

Installation

Unpack and upload it to the /wp-content/plugins/ directory.
Activate the plugin through the 'Plugins' menu in WordPress.

Features:

• Zoom effect.
• No extra work needed when you write a post: any direct link to an image will automatically get the FancyZoom treatment.
• Any title='...' attribute in your link automatically turns into a caption.

Requirements:

• WordPress 2.0.4 or higher