title: Are there any Ajax windowing frameworks out there?
body: <p>I have a project with a lot of pop-up layering going on and while i will have one layer open, that layer will effectively serve as another window.   I'm currently managing this with _json specific return pages that just return json objects and the layer acts on that.   Each call from the layer is from a jquery .ajax call which processes the json and requests another page.</p>
  
  <p>Is there a more defined framework for this type of MVC interaction ?  I'm managing the creation of the layer, the navigation from layer 1 to layer 2 and the refreshment of the layer with some code but it will quickly become unwieldy.</p>