Reference an Element in the Main Document from an IFRAME

[dch31969]

If I have a script that runs within an IFRAME that will change an element on the page which contains the IFRAME, what syntax would I use to reference the element on the main page?

Obviously document.getElementById("headerDiv").innerHTML = "Hello World" would change the DIV if the script is executed via the main document, however what if the script is executed via a document contained within an IFRAME?

[molendijk]

onclick (onload, whatever)='parent.document.getElementById("headerDiv").innerHTML = "Hello World"'

Arie Molendijk.