var blogID;

function getCalendar(blogURL, id, path) {
		blogID = id;
		var cookie = readCookie("AjaxCal" + id);
		if(cookie != null) {
				if(blogURL.lastIndexOf("/") != blogURL.length - 1) {
						path = blogURL + "/calendar/" + cookie + "/";
				} else {
						path = blogURL + "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, len = ca.length; i < len; 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" + blogID + "=" + value + "; path=/";
}

function errorProcess() {
		$('calendar').innerHTML = 'File Not Found';
}

function setWeekendAndHoliday(y,m) {
		setCurrentDate();
		var elements = $('calendar').getElementsByTagName("table");
		for (var j = 0, len = elements.length; j < len; 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');
								}
						}
				}
		}
}