JQuery: DatePicker defaults

I have a lot of JQuery DatePicker's in my application. How can I set to all this elements default settings/options?

$(function() {
        $( "#<%=dtIncident2.ClientID %>" ).datepicker({
            showOn: "button",
            buttonImage: "AppData/Images/calendar.gif",
            buttonImageOnly: true,
            showWeek: true,
            firstDay: 1,
            dateFormat: 'dd-mm-yy',
            maxDate: '+0',
            regional: 'uk'
        });
    });

I don't want to set every time showOn, buttonImage, buttonImageOnly... and other options.