I have a page with several iframes. One of this iframes has a page from a different domain. Inside this iframe there's another iframe with a page from the parent domain.

my page from mydomain.com
  -> an iframe
  -> iframe "#foo" from another-domain.com>
    -> iframe "#bar" from mydomain.com
  -> another iframe

I need to get a reference to the "#foo" node inside the main page. The security model should allow me to do that because "#bar" has the same domain as the main page. So what I'm doing is iterating through the window.top array and comparing each element to the window object which is currently the "#bar" window object. My test code looks like:

for (var i = 0; i < top.length; i++) {
    for (var j = 0; j < top[i].length; j++) {
        if (top[i][j] == window) {
            alert("The iframe number " + i + " contains me");
        }
    }
}

This works fine in all browsers, but Internet Explorer 6 throws a security error when accesing top[i][j]. Any ideas on how to solve this on IE6?

Thanks!