We currently have a HTML page that contains 2 Iframes. In true PTC site fashion, the top Iframe is internal/local to the domain and the bottom Iframe is a remote website or URL. The top Iframe loads a local HTML file which contains a running timer. I believe (though I'm not sure) that this running timer affects the iframe focus as it updates every second.
This implementation MUST work across ALL browsers if possible:
IE6/7, Firefox, Opera, Safari, etc.
Please let me know if you have any further questions, thanks.