title: Can one/has anyone used Mozilla's Rhino JS engine in a WebKit shell?
body: <p>I am under the impression that WebKit is a more general framework into which multiple JavaScript engines can be plugged. Most prominently, we have both Apple's JavaScriptCore, and Google's V8.</p>
  
  <p>Has anyone tried to plug in Mozilla's Rhino? If they haven't, can you point me to some brief resources on what is involved? (I'm very unlikely to take this on by myself, but I <em>am</em> interested in how the WebKit extension points in this area are structured, just for curiosity's sake.)</p>
  
  <p><sub>Also, if my understanding of the relationship between WebKit, JavaScriptCore, and V8 is incorrect, setting me straight there would make a fine answer.</sub></p>