How to call parent's parent javascript function from child window
<p>How to call parent's parent javascript function from child window.</p>

<p>Example-
Parent 1 has javascript function abc()
Now how to call Parent1 Javascript function in Child window from Parent 2 which is initially trigged from Parent 1 Window.
I tried window.parent.parent. Still no luck.</p>

<p>Thanks in advance</p>
