revealElements.js
A little jQuery plugin for out of dom elements find in 'lib/' folder
In folder 'base/' you can see the main idea of this little project, that I have translated into jQuery plugin.
Demo : http://jp.cartoux.net/dev/revealElements.js-master/othersample.html
Usage
Basic for show all dom elements with reveal class
$.revealElements();
More specific, you can choose class of element you want to "reveal", specify the wrapper element, the overlay z-index (auto adjuste the others elements z-index) & overlay color
$.revealElements({ revealClass: '.reveal', wrapperEl: 'body', overlayIndex: 8, overlayColor: '#000' });
Sample
Look index.html & othersample.html !