Setting src of nested iframe at runtime?

[FancyPrairie]

I have an iframe nested inside another iframe. When I select a button, declared in the 1st iframe, I want the onclick event of the button to set the src property of the 2nd iframe. I've tried various things with no luck.

ifrm2.src = "..."
ifrm2.frameElement.src = "..."
document.all("ifrm2").src = "..."
top.document.getElementByID("ifrm1").getElementByID("ifrm2").src = '..."

What am I doing wrong?

 

[simon551]

this is a javascript question?