Tab containers inside modal popups give the following error on page load:
> htmlfile: Can't move focus to the control because it is invisible, not enabled, or of a type that does not accept the focus.
The offending statement is:
> $get("__tab_"+a.get_element().id).focus()
> htmlfile: Can't move focus to the control because it is invisible, not enabled, or of a type that does not accept the focus.
The offending statement is:
> $get("__tab_"+a.get_element().id).focus()