grab global variable from an embedded iframe

Question

say an HTML page (Page.htm) contains the following...

Now this

Answer 1

This:

<iframe id="child_frame" src="http://" />

Should be:

<iframe name="child_frame" src="http://" />

The iframe attribute "id" should be changed to "name".

Answer 2

Your first syntax should work IF you're on the same doamin.

If the IFRAME is loading a page from another domain then you won't be able to access it.