Is it possible to add icons to the buttons on a jQuery UI Dialog? I've tried doing it this way:

$("#DeleteDialog").dialog({
    resizable: false,
    height:150,
    modal: true,
    buttons: {
        'Delete': function() {
            /* Do stuff */
            $(this).dialog('close');
        },
        Cancel: function() {
            $(this).dialog('close');
        }
    },
    open: function() {
        $('.ui-dialog-buttonpane').find('button:contains("Cancel")').addClass('ui-icon-cancel');
        $('.ui-dialog-buttonpane').find('button:contains("Delete")').addClass('ui-icon-trash');
    }
});

The selectors in the open function seem to be working fine. If I add the following to "open":

$('.ui-dialog-buttonpane').find('button:contains("Delete")').css('color', 'red');

then I do get a Delete button with red text. That's not bad, but I'd really like that little trash can sprite on the Delete button as well.