https://github.com/joyent/node/blob/master/lib/multipart.js
Usage
In the <head> of your document, link both jQuery and plax.
<script type="text/javascript" src="/js/jquery.min.js"></script>
<!-- <script type="text/javascript" src="/js/ender.min.js"></script> -->
<script type="text/javascript" src="/js/plax.js"></script>
Then in your javascript, add each "layer" to the list of layers to be parallaxed. Once that's done, enable Plax and you're good to go.
$('#plax-octocat').plaxify({"xRange":40,"yRange":40})
$('#plax-earth').plaxify({"xRange":20,"yRange":20,"invert":true})
$('#plax-bg').plaxify({"xRange":10,"yRange":10,"invert":true})
$.plax.enable()
Documentation
plaxify()
Add an item to the list of parallaxing layers. Ranges are centered at the items start location. For example, an item with a 20px range will be able to move 10px forward and 10px backward from its start location.
Parameters
xRange — integer: is the distance across the x-axis the object will travel.
yRange — integer: is the distance across the y-axis the object will travel.
invert — boolean: inverting will invert the direction the object will travel across each axis.*
* The same effect can be achieved by providing xRange and yRange with negative numbers, making it possible to invert only a single axis.
enable()
Enable parallaxing.
disable()
Disable parallaxing.