By default, the jQuery-UI dialog will place buttons on the right side of the popup:

This causes a problem because if you have “OK” right next to “Delete”, and you click the wrong one, well …

The obvious solution is to move the “Delete” to the opposite side.

To do that, add the following two lines after creating the dialog:

$('.ui-dialog-buttonset').css('float','none');
$('.ui-dialog-buttonset>button:last-child').css('float','right');

Now the buttons are on opposite sides: