Is it possible to open a jQuery UI Dialog without a title bar?
The one thing I discovered when hiding the Dialog titlebar is that, even if display is none, screen readers still pick it up and will read it. If you already added your own title bar, it will read both, causing confusion.
What I did was removed it from the DOM using $(selector).remove(). Now screen readers (and every one else) will not see it because it no longer exists.