Lightboxs are very popular to display large images using model dialogs. It is elegant and easy to implement. Here I have a simple example of how you can use jQuery to find all anchors link to an image and hook it up with a lightbox automatically… by using jQuery, of course!
Current version of jQuery is 1.3.2 and I use PrettyPhoto as my choice of jQuery lightbox plugin.
Use jQuery to find all anchors with links ending with .png, .jpg or .gif:
$("a").filter("[href$=.png], [href$=.jpg], [href$=.gif]").click(function(){...})
Next you hook the lightbox method after the click event, and you done!
Now show off your javascript skills in your blog without having to set each image manually!