A useful little renderer and class that I put together, which allows you to do real-time currency conversion of numbers into properly formatted money strings. The package includes a demo conversion calculator which is powered by this class. Documentation, and demo are included in the attached file. Please post with comments/suggestions.
Built on, and bundles Ext 3.3.1.
Download Here: Ext.money.Exchange-0.1rc.zip
Live Demo: http://jsfiddle.net/9UYyj/
2/20/2011 - Allow format attribute of currencies to use a callback function. This allows this to hook into other renderers.