title: How can I implement a JS observer which will observe multiple fields
body: <p>I would like to observe changes in multiple form fields and make a call back to the server with the combined values. The fields I want to observe are select boxs.</p>
  
  <p>Do I do this by firing the "onchange" event of the parent element?</p>
  
  <p>I'm using Prototype 1.6.</p>