This lightbox is a simplified and lighter version of the one made by mshwery. All the credits goes to him. I really liked his lightbox, and I tried to make it ES5 compliant to reduce the size. The result is a 4kb minified js file (& ~1kb css), still super easy to use.
A minimal Medium.com-style lightbox for enlarging media using css transforms, scaling images from their position on a page
Currently, only img tags with data-action=zoom or class image-zoom will be picked up on page load and bound to be zoomable. This module is dependent on classes/styles to produce the lightbox effect, so your mileage may vary on certain older browsers.
You'll need to include the styles as well.
<!DOCTYPE html>
<html>
<head>
<link rel='stylesheet' type='text/css' href='minimal-lightbox.css'>
</head>
<body>
<img src='http://lorempixel.com/1000/400' data-action='zoom'/>
<!-- or -->
<img src='http://lorempixel.com/1000/400' class='image-zoom'/>
<!-- include the package -->
<script type="text/javascript" src="minimal-lightbox.js"></script>
</body>
</html>You can see it in action on my blog