var url = "http://www.s-shigetomisoh.biz/blog/";

var archive_path = '';



function getCalendar(path) {

    var cookie = readCookie("AjaxCal");

    if(cookie != null) {

        path = url + archive_path + "calendar/" + cookie + "/";

    }

    changeMonth(path);

}



function changeMonth(url) {

    new Ajax.Updater({success: 'calendar'},

                     url, {

                         method: 'get',

                         onComplete: endProcess,

                         onFailure: errorProcess

                     });

    return false;

}



function readCookie(name) {

    var nameEQ = name + "=";

    var ca = document.cookie.split(';');

    for(var i=0;i < ca.length;i++) {

        var c = ca[i];

        while (c.charAt(0)==' ') c = c.substring(1,c.length);

        if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);

    }

    return null;

}



function endProcess() {

    var value = $('calendar').getElementsByTagName('table')[0].getAttribute('summary');

    setWeekendAndHoliday(value.split("/")[0], value.split("/")[1]);

    document.cookie = "AjaxCal=" + value + "; path=/";

}



function errorProcess() {

    $('calendar').innerHTML = 'File Not Found';

}



function setWeekendAndHoliday(y,m) {

    setCurrentDate();

    var elements = $('calendar').getElementsByTagName("table");

    for (j = 0; j < elements.length; j++) {

        var element = elements[j].getAttribute("summary");

        if(element == null){

            return;

        }

        var year = element.split("/")[0];

        var month = element.split("/")[1];

        if(!(year == y && month == m)){

            return;

        }

        var spans = elements[j].getElementsByTagName("span");

        var day;

        for (i = 0; i < spans.length; i++) {

            if (spans[i].parentNode.nodeName == "TD") {

                if(spans[i].innerHTML.indexOf("href") != -1){

                    day = spans[i].getElementsByTagName("a")[0].innerHTML;

                } else {

                    day = spans[i].innerHTML;

                }

                if (isHoliday(year, month, day)) {

                    spans[i].setAttribute('class', 'holiday');

                    spans[i].setAttribute('className', 'holiday');

                } else if(isSaturday(year, month, day)) {

                    spans[i].setAttribute('class', 'saturday');

                   spans[i].setAttribute('className', 'saturday');

                }

                if (isToday(year, month, day)) {

                    spans[i].parentNode.setAttribute('class', 'today');

                    spans[i].parentNode.setAttribute('className', 'today');

                }

            }

        }

    }

}