[support] modalframe api: affecting parent window

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(...)