title: Run a function in parent iframe when child is on certain page
body: <p>I have no access to the child frame content.</p>
  
  <p>I would like to run a function on the parent when the child iframe goes to a certain page.</p>
  
  <p>The child's URL does not change, only the content on the page.</p>
  
  <p>Is it possible to run the function on the parent frame based from content shown on the child frame?</p>
  
  <p>The child frame content does have a unique id="" tag that the parent frame could look for so could this be used?</p>