[support] modalframe api: affecting parent window

[Christopher M. Jones]

Hi, all. I'm spinning my wheels a bit on this one. I have a form in a 
modal, using modalframe api (http://drupal.org/project/modalframe). I 
want to use events in the modal to trigger changes in the DOM in the 
parent window, e.g., adding selections from the modal into the dom 
behind it.

I don't want to do this in the onSubmit handler, because the updates 
could take a second or so. So its better that the changes be done 
incrementally.

Thing is, I don't know how to affect the parent from the child. Modal 
frame itself does things like this:

self.$parentWindow = parent.jQuery(parent);

But I'm not sure what to do with that.

What I need to get to is something like

parent.find("select element in parent dom").trigger(...)