Iframe problem

[akswithsim]

I am using iframe structure as shown below
Main Window
----IFrame 1 (inside main window)
--------Iframe 2 (inside Iframe1)
----------------Iframe 3 (inside Iframe2)

From Iframe2, to call Iframe3 I am using following code
---------------
var obj = window.frames["Iframe3"];
---------------
Above code is throwing error in IE: Permission Denied.
but working fine in Firefox.

Can anybody help me. Its urgent?
Thanks in advance

[akswithsim]

Errors:
in IE 6 - Permission Denied.
in IE 7 - Object Expected.
in Firefox - Working fine.

One more infomation :
I am using Iframe SRC of same domain. (not external link is there).

[Dabrowski]

Strange one, permission denied should only happen if it's a different domain, which you've said it's not.

Object expected would seem that it can't find the objcet at all. Just a thought, I don't know how case sensitive IE is, try the IFRAME names in lower case. I'll do a test page for this and see if I can get it to work.

[akswithsim]

thanks Dabrowski for your replay. problem solved, just by reloading the window. But don't know why it is happening?

[Dabrowski]

Hmmmm, maybe it's to do with load times, IE might not let you access the IFRAME until it's loaded.

Try doing this:

function checkFrame() {

if(!frames['Iframe3']) {
alert( "Not ready yet!");
setTimeout( "checkFrame();", 100);
return;
}

myIframe = frames['Iframe3'];
}

That should keep trying every 100ms until the frame object actually exists.