JavaScript popup windows onLoad event

If I popup a window by doing
var newwin = window.open(Url, Name, Properties);

Is there a way to know on the opener page when the popup finishes loading? I have a page that is basicly a copy of another domains page with all the links going to the other domain. (don't ask why, it just makes it look like part of the site I am building). The problem is that none of the links work unless the browser has a cookie from that domain. I thought about opening a page from their site in a hidden iframe so that you wouldn't know you were loading it, but IE 6 defaults to not allowing cookies from a different domain. I finally came up with the idea of loading a popup of their site, and closing it after 1 or 2 seconds. It works most of the time, but sometimes it closes before the cookie loads. I just need to know when the popup is done loading, so that I can close it.

In the popup's onload:
window.opener.notifyLoaded();

where notifyLoaded is a function you define in the main window.

I don't have access to the popup html. What I need, and probably can't get is to know when the popup loads from the opener.

I don't think that's possible without a timer.

But you could try this:

Code:

---

var win = null;

function setOnLoad()
{
  if(!win)
    return;
  if(win && !win.document.body) {
    setTimeout(100, setOnLoad);
    return;
  }

  win.document.body.onload = pageLoaded;
}

function createWin()
{
  win = window.open(blabla);
  setOnLoad();
}

---

Not sure if it works though.

Hey that is a great idea!!! I will try that.