var req=null;
var target=null;
var READY_STATE_UNINITIALIZED= 0 ;
var READY_STATE_LOADING= 1 ;
var READY_STATE_LOADED= 2 ;
var READY_STATE_INTERACTIVE= 3 ;
var READY_STATE_COMPLETE= 4 ;

function loadXMLDoc(url) {
	if (window.XMLHttpRequest) {
		req = new XMLHttpRequest();
	} else if (window.ActiveXObject) {
		req = new ActiveXObject("Microsoft.XMLHTTP");
	}
	if (req) {
		req.onreadystatechange = processReqChange;
		req.open("GET", url, true);
		req.send(null);
	}
}

function processReqChange(){
	var ready=req.readyState;
	var data=null;
	if (ready==READY_STATE_COMPLETE){
		data=req.responseText;
		if (target!=null){
			target.innerHTML=data;
		}
	}
}

function calmyclick(url){
	target=document.getElementById('calendar');
	loadXMLDoc("cal.php?"+url);
}

function a_listmyclick(url){
	target=document.getElementById('a_list');
	loadXMLDoc("a_list.php?"+url);
}