source: branches/version-2_12-multilang/html/js/jquery.ui/ui-datepicker-ja.js @ 22180

$(function(){
    $.datepicker.setDefaults( $.datepicker.regional[ "ja" ] );
    $( "#datepicker" ).datepicker({
    beforeShowDay: function(date) {
        if(date.getDay() == 0) {
            return [true,"date-sunday"]; 
        } else if(date.getDay() == 6){
            return [true,"date-saturday"];
        } else {
            return [true];
        }
    },changeMonth: 'true'
    ,changeYear: 'true'
    ,onSelect: function(dateText, inst){
        setDate(dateText);
    },
    showButtonPanel: true,
    beforeShow: showAdditionalButton,       
    onChangeMonthYear: showAdditionalButton
    });
    
    $("#datepicker").blur( function() {
        var dateText = $(this).val();
        setDate(dateText);
    });

});

var showAdditionalButton = function (input) {
    setTimeout(function () {
        var buttonPane = $(input)
                 .datepicker("widget")
                 .find(".ui-datepicker-buttonpane");
        var btn = $('<button class="ui-datepicker-current ui-state-default ui-priority-secondary ui-corner-all" type="button">Clear</button>');
        btn
                .unbind("click")
                .bind("click", function () {
                    $.datepicker._clearDate(input);
                    $("*[name=year]").val("");
                    $("*[name=month]").val("");
                    $("*[name=day]").val("");
                });
        btn.appendTo(buttonPane);
    }, 1);
};
function setDate(dateText){
var dates = dateText.split('/');
$("*[name=year]").val(dates[0]);
$("*[name=month]").val(dates[1]);
$("*[name=day]").val(dates[2]);
}