title: Need to change @src of a parent iframe from within child iframe
body: <p>I have the following HTML markup (don't ask....)</p>
  
  <pre><code>- document  //main site
    - &lt;iframe&gt;  //my site
      - &lt;iframe&gt;  //site within my site
        - &lt;frame&gt;
          - &lt;a onclick="JavaScript:parent.parent.location.href='http://bla.com;return false;'"&gt;
  </code></pre>
  
  <p>Basically, main site is calling my site in an iframe.  I, in turn, also have an iframe on my site where I'm calling 3rd site.  The third site has a frameset with a frame in it that has a link.  When clicking on this link, it has to change the url of my site.  My site and my child site are on the same domain.  When I'm running my site as "stand-alone" (not in iframe) the above code works fine in all browsers.</p>
  
  <p>Once I open my site in an iframe of the main site, it looks like the above code is trying to change the source of the main site.  In FireFox I get a console message "Access to property denied".  In IE it opens up a new window with my site not in the main site anymore.</p>
  
  <p>What is the correct JavaScript to change the @src attribute on my site when I'm within an iframe?</p>