title: Cross-Page communication in firefox extension
body: <p>I have two tabs that my extension uses and I wanted to pass events back and forth between them.  I've already developed a Google Chrome extension that does this via the background page api, but there doesn't seem to be an equivalent in firefox.</p>
  
  <p>I thought message-manager in the firefox extension docs would do the trick, but the documentation on the object is quite poor.</p>
  
  <p>I'd be just as happy with using one of the tabs to control the other if I can't directly import the ideas of a background page from google chrome api.</p>
  
  <p>Any help/guidance would be great.</p>