What does the "Access is Denied" IE error mean?

[chinmay.sahoo]

The "Access Denied" error in any browser is due to the following reason.A javascript in one window or frame is tries to access another window or frame whose document's domain is different from the document containing the script.

 

[andyle]

Access is Denied" IE error due to the following reason:
a javascript in a window or frame is tries to access another window or frame whose document's domain is different from document containing the script