Zoomooz is an easy-to-use jQuery plugin for making any web page element zoom.
Basically, just have a look at the examples and start hacking away.
For more information and usage, see: http://janne.aukia.com/zoomooz
Setting up the build tools
Download and install Node.js (npm should install automatically):
Install node-jake and uglify-js:
npm install -g jake npm install uglify-js
Running the build
cd src jake