Coupla other approaches: http://www.johnnycode.com/blog/2010/04/08/jquery-form-serialize-doesnt-post-submit-and-button-values-duh/ http://stackoverflow.com/questions/4007942/jquery-serializearray-doesnt-include-the-submit-button-that-was-clicked
I'm surprised Jquery doesn't provide better support for this. Seems like a common pattern.
