var xmlHttp = false;

function $element(obj) {
	return document.getElementById(obj);
}

function $elements(obj) {
	return document.getElementsByName(obj);
}

function CrXMLHttpRequest() {
	xmlHttpObj = ["Microsoft.xmlHttp","MSXML2.xmlHttp.5.0","MSXML2.xmlHttp.4.0","MSXML2.xmlHttp.3.0","MSXML2.xmlHttp"];
	if(window.XMLHttpRequest) { //Mozilla 浏览器
		xmlHttp = new XMLHttpRequest();
	} else if(window.ActiveXObject) {
		for(i=0;i<xmlHttpObj.length;i++) {
			xmlHttp = new ActiveXObject(xmlHttpObj[i]);
			if(xmlHttp) {
				break;    
			}
		}
	} else {
		return false;
	}
	return xmlHttp?xmlHttp:false;
}

function calender(vals) {
	var url = head_path+'request/calendar.php?ym='+vals;
	CrXMLHttpRequest();
	xmlHttp.open("GET", url, true);
	xmlHttp.onreadystatechange = ReadyStand;
	xmlHttp.send(null);
}

function ReadyStand() {
	if (xmlHttp.readyState == 4) {
		if (xmlHttp.status == 200) {
			var state = xmlHttp.responseText;
			$element('calendarArea').innerHTML = state;
		}
	}
}