title: Are JavaScript events triggered during the onepage checkout of Magento?
body: <p>I need to run some JavaScript to manipulate some fields upon checkout (auto-select a shipping option) on a Magento store.  Because each stage of the onepage checkout accordion is loaded dynamically I cannot do this on page load, and instead need to do it when the relevant stage of the accordion is reached.</p>
  
  <p>Is there a JavaScript event I can hook up to in order to achieve this?  I would expect an event to be fired when the next step begins to load and then completes loading, but I can't find any documentation on it.</p>
  
  <p>Does such a thing exist, or do I need to find a workaround?</p>