Check if parent window is iframe or not

Question

How can I tell from a page within an iframe, if the parent itself is also within an iframe?

Explanation:

My home page home.ht

Answer 1

This is true if a window is not a frame/iframe:

if(self==top)

If you like to see if the parent window of the given window is a frame, use:

if(parent==top)

It's a simple comparision of top (the most top window of the window hierarchy) and another window object (self or parent).