Hmmmm.. 'but for' the fact that you have the iframe snippet in multiple placeholders on the same page. Three times on a page actually.

Some have still the <![if lt IE 4]> which I removed in my sample earlier, while others don't.

I don't quite see how you have managed to get the pale green placeholder onto the page either. I am unable to even select it to delete it

Anyhow, I removed all except the pale green placeholders and it works fine in all browsers mentioned previously here.

► DEMO

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