Nine-patch images for web development
If you're still interested I created a Javascript file that uses canvas to create real nine patch image support for the web. The open source project can be found here:
https://github.com/chrislondon/9-Patch-Image-for-Websites
Yes. It is used for border-image
in CSS 3:
http://www.css3.info/preview/border-image/
http://www.w3.org/TR/css3-background/#border-images