The ‘imgPreview’ plugin allows your users to preview an image before clicking on it and, out of necessity, will preload the image so when a user does click through to it there is no waiting time!

The image preview shows up in a tooltip-like box appearing alongside the user’s cursor when hovering over a link. The plugin is entirely unobtrusive; it does not require any hooks to target specific links (no non-semantic classes); it will automatically detect the anchors that are linking to images and will only apply the preview effect to them.

DOWNLOAD -> PLEASE IGNORE THE RELEASE INFORMATION:
THIS IS THE LATEST VERSION (Minified) : http://plugins.jquery.com/files/imgpreview.min.0.22.jquery.js

DEMO: Various demonstrations of the plugin can be found here: http://james.padolsey.com/demos/imgPreview/full/

NOTE
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Version 0.2 has just been released (8th Feb, 09). It is backward compatible but does have a couple of important updates and a new option. The new option is "srcAttr" - you can read about all of the currently available options here: http://james.padolsey.com/javascript/new-jquery-plugin-imgpreview/

Releases

Official releases	Date	Size	Links	Status
1.2.2-Full	2009-Feb-10	3.87 KB	Download Release notes	Supported for 1.0.x
0.2.1-Minified	2009-Feb-09	1.37 KB	Download Release notes	Recommended for 1.0.x
0.2.2-Minified	2009-Feb-10	1.44 KB	Download Release notes	Recommended for 1.2.x