FadeIn & FadeOut effects for Show or Hide do only effect overylay, not dialog

If one sets the ''show'' option to ''fadeIn'', only the overlay fades in, not the dialog.

If one sets the ''hide'' option to ''fadeOut'', only the overlay fades out, the dialog stays.

var dialog = function(){
	$('<div></div>').dialog({
		show: 'fadeIn',
		hide: 'fadeOut',
		width: 1024,
		height: 768,
		resizable: false,
		draggable: false,
		modal: true
	});
};
dialog();