Grid Calculator
Grid Layout (ctrl+shift+g)
The Grid Layout Javascript enables web-developers to stick to a Grid Layout quickly and simply by including the Grid Layouts Javascript file and simple XHTML code. Currently, the Grid Layouts Javascript relies on jQuery.
Lightbox JS v2.0
Lightbox JS is a simple, unobtrusive script used to overlay images on the current page. It's a snap to setup and works on all modern browsers. What's New in Version 2.0 - Image Sets: group related images and navigate through them with ease - Visual Effec
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script.aculo.us - web 2.0 javascript