How do they do it? Transparent foreground on a web page
You know how sometimes you are on a good site and you click a button (for example to submit a form) and the form does not disappear, instead the foreground becomes transparent and contains some message or other page. The post is at the leading edge, but the previous page is still mostly visible behind it - how do they do it? I assume this is an Ajax-esque trick.
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This is called a modal light box. There are quite a few JS plugins that can do this, including Lightbox and the JQuery UI Dialog , to name a couple. I recently started using Fancybox and was very impressed with its speed and customizability.
Here's a pretty good (not all inclusive) list of them:
http://spoonfedproject.com/jquery/extensive-list-of-jquery-lightbox-modal-plugins/
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